VALLEY SYSTEMS INC
SC 13E3, 1998-10-13
SANITARY SERVICES
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                        RULE 13E-3 TRANSACTION STATEMENT
       (Pursuant to Section 13(e) of the Securities Exchange Act of 1934)

                             [Amendment No. ______]

                              VALLEY SYSTEMS, INC.
                              (Name of the Issuer)

                              VALLEY SYSTEMS, INC.
                      (Name of Person(s) Filing Statement)

Common Stock, par value $.01                         920135100
Title of Class of Securities)              (CUSIP Number of Class of Securities)
                           B. Joseph Alley, Jr., Esq.
                          Arnall Golden & Gregory, LLP
                            2800 One Atlantic Center
                           1201 West Peachtree Street
                           Atlanta, Georgia 30309-3450
                                 (404) 873-8688
(Name, address, and telephone number of person authorized to receive notices and
communications on behalf of person(s)filing statement

    This statement is filed in connection with (check the appropriate box):

a. [x]  The   filing  of  solicitation  materials  or an  information  statement
        subject to  Regulation 14A  [17 CFR 240.14a-1 to 240.14b-1],  Regulation
        14C [17 CFR  240.14c-1   to   240.14c-101]  or  Rule  13e-3(c)  [Section
        240.13e-(c)] under the Securities Exchange Act of 1934.

b. [ ]  The filing of a registration statement under the Securities Act of 1933.
c. [ ]  A tender offer.
d. [ ]  None of the above.

Check the  following box if the  soliciting  material or  information  statement
referred to in checking box (a) are preliminary copies:[x].

                            Calculation of Filing Fee

Transaction valuation* $29,800,771               Amount of Filing Fee  $5,960.15

      *   Based  on the cash  value  of the  fractional  shares  expected  to be
          created by the Rule 13e-3 transaction.

    [x]   Check  box if any  part  of the  fee is  offset  as  provided  by Rule
          0-11(a)(2)  and identify the filing with which the  offsetting fee was
          previously   paid.   Identify  the  previous  filing  by  registration
          statement number, or the form or schedule and the date of its filing.

          Amount Previously Paid:            $5,960.15
          Form or Registration No.:          Schedule 14C Information Statement
          Filing Party:                      Valley Systems, Inc.
          Date Filed:                        October 13, 1998



<PAGE>


                                  INTRODUCTION

         This Rule 13E-3 Transaction  Statement (the "Statement") is being filed
by Valley  Systems,  Inc.  (the  "Company")  with respect to the class of equity
securities of the Company that is subject to a Rule 13e-3  transaction,  (Common
Stock,  $.01 par value.  Simultaneously  with the filing of this Statement,  the
Company is filing a Preliminary  Information Statement and Schedule 14C with the
Securities and Exchange Commission. The Information Statement is to be furnished
to  stockholders of the Company in connection with action to be taken by written
consent of stockholders  with respect to the proposed sale of substantially  all
of the  Company's  assets to  HydroChem  Industrial  Services,  Inc., a Delaware
corporation.

         The cross reference sheet herein is being supplied  pursuant to General
Instruction  F to  Schedule  13E-3  and shows the  location  in the  Preliminary
Information  Statement of the information required to be included in response to
the items of this  Statement.  The  information in the  Preliminary  Information
Statement is hereby expressly incorporated herein by reference and the responses
to each item are qualified in their entirety by the contents thereof.

                     CROSS REFERENCE SHEET SHOWING LOCATION
               IN PRELIMINARY INFORMATION STATEMENT OF INFORMATION
                       REQUIRED BY ITEMS IN SCHEDULE 13E-3

<TABLE>
<S>                                                     <C>  
Schedule 13E-3 Item and Caption                         Location in Information Statement

1.  Issuer and Class of Security Subject to the
    Transaction
    (a)-(d)                                             "Cover Page;" "Available Information and Sources of
                                                        Information;" "Market and Market Price for Valley Common
                                                        Stock"

    (e)                                                 Not Applicable

    (f)                                                 "Common Stock Repurchases"

2.  Identity and Background                             This Preliminary Information Statement is being filed by the Issuer
                                                        of the class of equity securities which is the subject of this Rule
                                                        13e-3 transaction.

    (a)-(g)                                             Not Applicable

3.  Past Contacts, Transactions or Negotiations

    (a)                                                 Not Applicable
    (b)                                                 "Special Factors - History of the Sale"

4.  Terms of the Transaction                            "The Sale;" "Special Factors;" "The Asset Purchase
                                                        Agreement"

5.  Plans or Proposals of  the Issuer or Affiliate      "The Sale;" "Special Factors"

6.  Source and Amounts of Funds or Other Consideration  "The Sale - Estimated Expenses; Distribution of Sale
                                                        Proceeds"

7.  Purpose(s), Alternatives, Reasons and Effects       "Special Factors"

8.  Fairness of the Transaction                         "Special Factors"

9.  Reports,  Opinions,  Appraisals  and  Certain       No report,  opinion  or  appraisal   materially   related  to   
    Negotiations                                        this  Rule  13e-3 transaction has been received by the Issuer.

10. Interest in Securities of the Issuer                "Beneficial Ownership of Voting Securities"

11. Contracts, Arrangements or Understandings with      "Special  Factors -Interests of Certain Persons in the 
     Respect to the Issuer's  Securities                Sale"

12. Present Intention and Recommendation of Certain     Not Applicable
    Persons with Regard to the Transaction

13. Other Provisions of the Transaction

    (a)                                                 "No Rights of Dissenting Stockholders"

    (b)-(c)                                             Not Applicable
</TABLE>

                                      -1-

<PAGE>

<TABLE>
<S>                                                     <C>  
Schedule 13E-3 Item and Caption                         Location in Information Statement

14. Financial Information

    (a)                                                 "Selected Financial Data;" Financial Statements contained
                                                        in Issuer's Form 10-K for the fiscal year ended June 30,
                                                        1998

    (b)                                                 Not Applicable

15. Persons and Assets Employed, Retained or Utilized   Not Applicable

16. Additional Information                              Information Statement in its entirety

17. Material to be Filed as Exhibits                    Separately included herewith
</TABLE>


                                      -2-

<PAGE>


Item 1.  Issuer and Class of Security Subject to the Transaction.

         (a)-(d)  The  information  set  forth on the  Cover  Page and under the
captions  "Available  Information  and Sources of  Information"  and "Market and
Market Price for Valley Common Stock" of the Preliminary  Information  Statement
is incorporated herein by reference.

         (e)      Not Applicable

         (f)  The   information  set  forth  under  the  caption  "Common  Stock
Repurchases" of the Preliminary  Information Statement is incorporated herein by
reference.

Item 2.   Identity and Background.

         This Preliminary  Information Statement is being filed by the Issuer of
the  class  of  equity  securities  which  is the  subject  of this  Rule  13e-3
transaction.

         (a)-(g)   Not Applicable

Item 3.  Past Contacts, Transactions or Negotiations.

         (a)      Not Applicable

         (b) The  information  set forth  under the caption  "Special  Factors -
History of the Sale" of the  Preliminary  Information  Statement is incorporated
herein by reference.

Item 4.  Terms of the Transaction.

         The  information  set forth under the  captions  "The  Sale,"  "Special
Factors"  and "The Asset  Purchase  Agreement"  of the  Preliminary  Information
Statement is incorporated herein by reference.

Item 5.  Plans or Proposals of the Issuer or Affiliate.

         The  information  set forth under the captions  "The Sale" and "Special
Factors" of the  Preliminary  Information  Statement is  incorporated  herein by
reference.

Item 6.  Source and Amounts of Funds or Other Consideration.

         The  information  set forth  under the  caption  "The Sale -  Estimated
Expenses;   Distribution  of  Sale  Proceeds"  of  the  Preliminary  Information
Statement is incorporated herein by reference.

Item 7.  Purpose(s), Alternatives, Reasons and Effects.

         The  information set forth under the caption  "Special  Factors" of the
Preliminary Information Statement is incorporated herein by reference.

Item 8.  Fairness of the Transaction.

         The  information set forth under the caption  "Special  Factors" of the
Preliminary Information Statement is incorporated herein by reference.

Item 9.   Reports, Opinions, Appraisals and Certain Negotiations.

          No report,  opinion or appraisal materially related to this Rule 13e-3
transaction has been received by the Issuer.



                                      -3-
<PAGE>




Item 10. Interest in Securities of the Issuer.

         The  information set forth under the caption  "Beneficial  Ownership of
Voting  Securities" of the  Preliminary  Information  Statement is  incorporated
herein by reference.

Item 11. Contracts, Arrangements or Understandings with Respect to the Issuer's 
         Securities.

         The  information  set  forth  under  the  caption  "Special  Factors  -
Interests  of  Certain  Persons  in the  Sale"  of the  Preliminary  Information
Statement is incorporated herein by reference.

Item 12. Present Intention and Recommendation of Certain Persons with Regard to 
         the Transaction.

         Not Applicable

Item 13. Other Provisions of the Transaction.

         (a)  The  information  set  forth  under  the  caption  "No  Rights  of
Dissenting  Stockholders" of the Preliminary Information Statement and Financial
Statements  contained  in Issuer's  Form 10-K for the fiscal year ended June 30,
1998 (which is  incorporated  by reference into the  Information  Statement) are
incorporated herein by reference.

         (b)-(c)  Not Applicable

Item 14. Financial Information.

         (a) The  information  set forth under the caption  "Selected  Financial
Data"  of the  Preliminary  Information  Statement  is  incorporated  herein  by
reference.

         (b)      Not Applicable

Item 15.          Persons and Assets Employed, Retained or Utilized.

         Not Applicable

Item 16.          Additional Information.

         The information set forth in the Preliminary  Information  Statement in
its entirety is incorporated herein by reference.

Item 17.  Material to be Filed as Exhibits.

         (a), (b), (c), (e) and (f) Not Applicable

         (d)      Preliminary Information Statement




                                      -4-
<PAGE>





                                    SIGNATURE

         After due inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

                                 VALLEY SYSTEMS, INC.



Date:   October  13, 1998        By:ED STRICKLAND
                                    Ed Strickland
                                    President and Chief Executive Officer










                                      -5-

<PAGE>


                                  EXHIBIT INDEX


EXHIBIT                         DESCRIPTION                             PAGE

(a), (b), (c), (e) and (f)      Not Applicable

(d)                             Preliminary Information Statement


                                    EXHIBIT



                                PRELIMINARY COPY


                              INFORMATION STATEMENT

                              VALLEY SYSTEMS, INC.
                            11580 Lafayette Drive, NW
                            Canal Fulton, Ohio 44614


                  WE ARE NOT ASKING YOU FOR A PROXY AND YOU ARE
                        REQUESTED NOT TO SEND US A PROXY

         THIS TRANSACTION HAS NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
AND  EXCHANGE  COMMISSION  NOR HAS THE  COMMISSION  PASSED UPON THE  FAIRNESS OR
MERITS OF SUCH  TRANSACTION NOR UPON THE ACCURACY OR ADEQUACY OF THE INFORMATION
CONTAINED IN THIS DOCUMENT. ANY REPRESENTATION TO THE CONTRARY IS UNLAWFUL.

         This  Information  Statement  is furnished by the Board of Directors of
Valley  Systems,  Inc.,  a Delaware  corporation  ("Valley"),  to the holders of
record at the close of  business on  September  11,  1998 (the  "Consent  Record
Date") of  Valley's  outstanding  Common  Stock,  par value  $.01 per share (the
"Common  Stock"),  pursuant  to Rule  14c-2  promulgated  under  the  Securities
Exchange  Act of 1934,  as amended  (the  "Exchange  Act").  The purpose of this
Information  Statement is to inform Valley's stockholders of certain action that
will be taken by Valley  pursuant to approval of its Board of  Directors  and by
the written  consent of the holders of a majority of the  outstanding  shares of
Common Stock and Series C Preferred Stock of Valley, voting together as a single
class. This Information  Statement is being mailed on or about __________,  1998
to the stockholders of record of Valley as of the Consent Record Date.

         As described in more detail in this Information Statement, the proposed
action  involves  the sale (the  "Sale") of  substantially  all of the assets of
Valley and of its wholly-owned subsidiary, Valley Systems of Ohio, Inc., an Ohio
corporation  (the  "Subsidiary")  (Valley  and the  Subsidiary  are  hereinafter
collectively  referred to as the "Company"),  to HydroChem  Industrial Services,
Inc. ("HydroChem"), a Delaware corporation. The Board of Directors believes that
the Sale is fair to the  Company's  stockholders.  The Sale is described in more
detail below under the caption "THE SALE".

         The Company is not seeking the consent,  authorization  or proxy of its
stockholders with respect to the Sale. Pursuant to the Company's  Certificate of
Incorporation,  there are 12 million shares of Common Stock and 2 million shares
of Preferred Stock  authorized for issuance.  As of the Consent Record Date, the
Company had  outstanding  7,906,617  shares of Common Stock and 55,000 shares of
Series C Preferred  Stock. The Common Stock and the Series C Preferred Stock are
the only outstanding issues of the Company's authorized securities.


<PAGE>

         The Sale is subject  to the  approval  of a  majority  of the shares of
Common  Stock and a majority of the shares of Series C Preferred  Stock,  voting
together as a single  class.  Each share of Common  Stock and Series C Preferred
Stock will have one vote.  The Sale was  approved by the Board of  Directors  on
September 8, 1998 and was approved by the written consent of Rollins  Investment
Fund, the holder of a majority of the  outstanding  shares of Common Stock,  and
Rollins Holding  Company,  Inc., the holder of all of the outstanding  shares of
Series C Preferred Stock, on October __, 1998. This Information Statement serves
as notice of such  approval to the Company's  stockholders  pursuant to Delaware
General Corporation Law ss. 228.

         This  Information  Statement is  accompanied by a copy of the Company's
Form 10-K for the fiscal year ended June 30, 1998, filed with the Securities and
Exchange Commission on September 28, 1998.

         The date of this Information Statement is October __, 1998.


                                      -2-
<PAGE>


                           FORWARD-LOOKING INFORMATION

         Statements  contained  in  this  Information  Statement  that  are  not
historical  facts are  forward-looking  statements  within  the  meaning  of the
Private  Securities  Litigation  Reform Act of 1995.  In addition,  the Company,
through its senior management,  from time to time makes  forward-looking  public
statements  concerning  expected  future  operations and  performance  and other
developments.   Such  forward-looking   statements  are  necessarily   estimates
reflecting  the  Company's  best  judgment  based upon current  information  and
involve a number of  significant  risks and  uncertainties,  and there can be no
assurance   that  other   factors   will  not  affect  the   accuracy   of  such
forward-looking statements. While it is impossible to identify all such factors,
factors  which  could  cause  actual  results  to differ  materially  from those
estimated  by the  Company  include,  but  are not  limited  to,  the  Company's
incurring   expenses  in  connection  with  its  winding  up,   liquidation  and
dissolution which are greater than those anticipated,  changes in the regulation
of the industrial  cleaning  industry at either or both of the federal and state
levels,  competitive  pressures  in the  industrial  cleaning  industry  and the
Company's  response thereto,  the general  conditions in the economy and capital
markets,  and other  factors  which may be  identified  from time to time in the
Company's SEC filings and in other public announcements of the Company.


                    BENEFICIAL OWNERSHIP OF VOTING SECURITIES

         The following  table sets forth certain  information as of September 1,
1998 with respect to the beneficial  ownership of the Common Stock and Preferred
Stock of the Company by each beneficial owner of more than 5% of the outstanding
shares of each class. In addition,  this table includes the  outstanding  voting
securities  beneficially  owned by the executive  officers listed in the Summary
Compensation  Table,  Directors and Director nominees,  and the number of shares
owned  by  Directors  and  executive  officers  as  a  group.  Unless  otherwise
indicated,  the owners have sole  voting and  investment  power with  respect to
their respective shares.
<TABLE>
<S>                                    <C>                          <C>                      <C>    

  Name and Address of Beneficial               Position              Number of Shares        Percentage of
               Owner                                                Beneficially Owned        Class Owned

COMMON STOCK:
Rollins Investment Fund(1)               Stockholder                8,003,945(2)(3)                75.3%
R. Randall Rollins (1)                   Stockholder                8,003,945(2)(3)                75.3%
Gary W. Rollins(1)                       Stockholder                8,003,945(2)(3)                75.3%
Ed Strickland(4) (8)                     President/CEO                192,000                       1.8%                     
Dennis D. Sheets (4) (9)                 Vice President/CFO            50,000                      --(5)
Joe M. Young(1) (6) (10)                 Director                      24,000                      --(5)
Allen O. Kinzer(4) (11)                  Director                      17,800                      --(5)
All officers and directors as a                                     8,287,745(2)(3)(6)             78.0%
      group (4 persons)

SERIES C PREFERRED STOCK:
Rollins Holding Company, Inc.            Stockholder                   55,000                     100.0%
(1)(7)

</TABLE>

                                      -3-

<PAGE>

(1)  Addresses are c/o Rollins  Investment Fund, P.O. Box 647, Atlanta,  Georgia
     30301.

(2)  Includes  2,314,000  shares  that  are  subject  to  outstanding   warrants
     currently exercisable by Rollins Investment Fund (RIF).

(3)  RIF  beneficially  owns  an  aggregate   8,003,945  shares  (including  the
     2,314,000 shares subject to outstanding  warrants currently  exercisable by
     RIF) of the  Company's  Common  Stock  with  respect  to which RIF has sole
     voting and  dispositive  power.  Given his respective  interest in RIF as a
     general manager  thereof,  as co-executor of the Estate of O. Wayne Rollins
     (the "Estate") (with the power to control the Estate in its entirety),  and
     as  sole   trustee  of  five  trusts  of  which  his  five   children   are
     beneficiaries,  R. Randall Rollins has shared voting and dispositive  power
     with  respect  to the  entire  8,003,945  shares  held  by RIF.  Given  his
     respective  interest in RIF as a general partner thereof, as co-executor of
     the Estate (with the power to control the Estate in its  entirety),  and as
     sole trustee of four trusts of which his four  children are  beneficiaries,
     Gary W. Rollins has shared voting and dispositive power with respect to the
     entire  8,003,945  shares held by RIF. Given each  individual's  ability to
     influence the  disposition  of all of RIF's  holdings,  they have deemed it
     appropriate to report beneficial ownership on a shared basis for the entire
     number of shares held by RIF.

(4)  Addresses are c/o Valley Systems,  Inc.,  P.O. Box 603, Canal Fulton,  Ohio
     44614.

(5)  Owns less than 1% of the Company's Common Stock.

(6)  Joe M. Young, a director of the Company,  is General Manager of RIF and was
     appointed  to the Board of  Directors  of the  Company  pursuant to a right
     guaranteed  to RIF in  connection  with its purchase of Common Stock of the
     Company in December 1991. Mr. Young disclaims  beneficial  ownership of the
     shares held by RIF,  although  due to his  affiliation  with RIF, and RIF's
     right to name a director of the  Company,  those shares are included in the
     total reported for all officers and directors as a group.

(7)  Rollins Holding Company, Inc. is an affiliate of RIF.

(8)  Includes  80,000 shares subject to options which are presently  exercisable
     or  will  become  exercisable  within  60  days  after  the  date  of  this
     Information Statement.  Excludes 20,000 shares subject to options which are
     not presently  exercisable and will not become  exercisable  within 60 days
     after the date of this Information Statement.

(9)  Includes  20,000 shares subject to options which are presently  exercisable
     or  will  become  exercisable  within  60  days  after  the  date  of  this
     Information  Statement.  Excludes 5,000 shares subject to options which are
     not presently  exercisable and will not become  exercisable  within 60 days
     after the date of this Information Statement.

(10) Includes  24,000 shares subject to options which are presently  exercisable
     or  will  become  exercisable  within  60  days  after  the  date  of  this
     Information  Statement.  Excludes 6,000 shares subject to options which are
     not presently  exercisable and will not become  exercisable  within 60 days
     after the date of this Information Statement.

(11) Includes  16,000 shares subject to options which are presently  exercisable
     or  will  become  exercisable  within  60  days  after  the  date  of  this
     Information  Statement.  Excludes 4,000 shares subject to options which are
     not presently  exercisable and will not become  exercisable  within 60 days
     after the date of this Information Statement.

                                      -4-
<PAGE>


                             SELECTED FINANCIAL DATA


         Dollars in thousands, except per share data:
<TABLE>
<S>                                         <C>            <C>              <C>           <C>              <C>   


                                                    1998           1997           1996            1995           1994
                                                  ----------    -----------     ----------      ----------     ----------
Sales                                          $     24,431  $      23,088   $     21,875    $     24,231   $     27,494
Gross profit                                          9,040          8,559          6,853           8,562          6,291
Selling, general and administrative                   7,145          7,268          7,254           7,155          8,830
   expenses
Litigation settlements and related fees                   -          (752)              -               -          1,351
Restructuring charges                                     -              -              -               -          3,548
Interest expense                                        593            592            572             895          1,506
Net income (loss)                                     1,302          1,451          (973)             512        (8,539)
Earnings (loss) per common share: basic                0.12           0.13         (0.16)            0.02         (1.31)
   and diluted
Total assets                                         15,934         14,568         15,123          15,704         19,740
Total long-term debt                                  7,585          7,235          7,021           5,858         10,194
Book value per common share                   $         .68  $         .56   $        .48    $        .64   $      (.03)
Ratio of earnings to fixed charges                     3.20           3.45              *               *              *

*This information is not required to be included herein.
</TABLE>

                 MARKET AND MARKET PRICE FOR VALLEY COMMON STOCK

         Valley  Common  Stock is listed  under the  symbol  VALE on The  Nasdaq
SmallCap Market.  Set forth below are the high and low reported sales prices per
share of Valley Common Stock on The Nasdaq SmallCap Market,  on (i) September 8,
1998,  the last business date preceding the  announcement  of the signing of the
Agreement,  and (ii) October __,  1998,  the most recent  practicable  date such
information could be obtained:

    

                                                               Per Share of
                                                            Valley Common Stock
Date                                                       High             Low
September 8, 1998........................................ $31/32          $31/32
October __, 1998......................................... $               $ 

         The following  table sets forth certain  information as to the high and
low  reported  sale  prices  per share of Valley  Common  Stock for the  periods
indicated.  The prices for Valley  Common  Stock are as  reported  on The Nasdaq
Small Cap Market. Valley has never paid dividends on its capital stock. Valley's
credit  agreements  include  provisions  which  restrict  the  payment  of  such
dividends.

                                                             Per Share of
                                                        Valley Common Stock
Quarter Ended                                             High        Low
9/30/96............................................... $ 1 9/16       $  5/8
12/31/96.............................................. $ 1 7/16       $ 15/16
3/31/97............................................... $ 1 9/16       $ 15/16

                                      -5-
<PAGE>

6/30/97............................................... $ 1 11/16      $ 7/8
9/30/97............................................... $ 1 3/4        $ 1 15/32
12/31/97.............................................. $ 1 3/4        $  3/4
3/31/98............................................... $ 1 3/16       $  7/8
6/30/98............................................... $ 1 1/2        $ 15/16
9/30/98............................................... $ 2 11/16      $ 15/16

         As of the Consent Record Date,  there were  approximately  1,100 record
holders of Valley  Common  Stock,  including  those  shares  held by  depository
companies for certain beneficial owners.

                                      -6-
<PAGE>


                            COMMON STOCK REPURCHASES

         Since July 1, 1996, Valley has repurchased 500,000 shares of its Common
Stock on the open market.  The purchase prices paid by Valley for the securities
purchased  ranged  from $1.00 per share to $1.25 per share.  All such  purchases
were made during the fiscal year ended June 30, 1997,  and the average  purchase
price  paid for such  shares  of  Common  Stock  during  each  quarterly  period
beginning on or after July 1, 1996 during which such  purchases were made is set
forth below:

Quarter Ended                                         Average Purchase Price
9/30/96............................................         $1.078
12/31/96...........................................         $1.146
3/31/97............................................         $1.151
6/30/97............................................         $1.051


                                    THE SALE

General

         On  September  8, 1998,  the  Company  entered  into an Asset  Purchase
Agreement  (the  "Agreement")  with  HydroChem  pursuant to which  HydroChem has
agreed  to  purchase  substantially  all  of the  Company's  assets  and  assume
substantially  all of  the  Company's  outstanding  liabilities.  A copy  of the
Agreement  is attached to this  Information  Statement as Appendix A. The stated
purchase  price to be paid by HydroChem is  approximately  $29.8  million,  with
$25.8 million  payable in cash at the closing (the  "Closing") and the remaining
$4 million to be deposited into escrow and held pursuant to an Escrow  Agreement
(the  "Escrow  Agreement").  In the event that the net assets  reflected  on the
Company's  balance sheet at Closing are greater or less than  $5,353,593  (which
was the amount of net assets at June 30, 1998),  any excess or deficiency  shall
be paid to the Company (in the case of an excess) or to  HydroChem  (in the case
of a deficiency) as an adjustment to the purchase price.

The Escrow Agreement

         Prior to the  Closing,  the Company and  HydroChem  will enter into the
Escrow Agreement,  pursuant to which HydroChem will, at the Closing,  deposit $4
million into an escrow  account.  The escrowed funds held pursuant to the Escrow
Agreement will secure HydroChem's rights to indemnification under the Agreement,
including  indemnification  with  respect  to  certain  potential  environmental
expenses  and  remediation  cost  and the  collectibility  of  certain  accounts
receivable the  collectibility  of which are guaranteed by the Company.  At such
time as the Company  delivers to HydroChem a certificate  to the effect that the
Company has completed environmental remediation as required by the Agreement (if
any), an amount equal to $1 million,  less the sum of (i) the aggregate  cost of
such environmental  remediation and (ii) the aggregate amount of other claims of

                                      -7-

<PAGE>


HydroChem  subject  to  indemnification  under  the  Agreement  in  excess of $3
million,  shall be released to the Company  from escrow.  In addition,  provided
that any disputes existing on each of the first and second  anniversaries of the
Agreement,  respectively, do not exceed specified amounts, then an additional $1
million of the escrowed funds will be released  following each such anniversary,
reduced in each  instance by payments  previously  made in  satisfaction  of the
Company's  indemnification  obligation.  If there  are no  claims  by  HydroChem
against all or a portion of the escrowed  funds on the third  anniversary of the
Agreement, then the remaining escrowed funds will be released to the Company. To
the extent disputed claims do exist, an amount equal to the disputed amount will
continue to be held in escrow  until the claim is fully  resolved.  The escrowed
funds will be  HydroChem's  sole recourse in connection  with claims (other than
fraud) under the Agreement.  A copy of the Escrow  Agreement is attached to this
Information Statement as Appendix B.

Estimated Expenses; Distribution of Sale Proceeds

         The  Company  currently   estimates  that  expenses  of  effecting  the
transaction and  liquidating the Company over the next several years,  including
legal  and   accounting   fees,   income  taxes  (net  of  net  operating   loss
carryforwards),  and liabilities not assumed by HydroChem, will be approximately
$3.8 million.  As a result, the Company  anticipates there will be approximately
$22.0 million (exclusive of escrowed funds) available  following payment of such
expenses  and  liabilities.  Of  this  amount,  approximately  $600,000  will be
utilized to redeem  outstanding  employee stock  options.  Stock options will be
redeemed at a price the Board  estimates  to be the fair market  value of shares
subject to outstanding options less exercise price thereof. In addition, holders
of stock  options  will  receive  a  termination  bonus  estimated  to bring the
aggregate  consideration  to be received  by option  holders to $3.00 per option
held, less the aggregate option exercise price thereof. As of the Consent Record
Date, options to purchase 387,280 shares were outstanding, at a weighted average
exercise  price of $1.50 per  share.  All  options,  vested  and  unvested,  are
expected to be redeemed. In addition, approximately $5.5 million will be paid as
a liquidation  preference to the Company's  outstanding  preferred  stockholder,
Rollins  Holding  Company,  Inc.,  which is an affiliate of, Rollins  Investment
Fund, the Company's largest common stockholder, and Joe Young, a Director of the
Company.  The remaining amount,  anticipated to be approximately  $15.9 million,
will be  distributed  to the  Company's  common  stockholders  as soon after the
Closing as is practicable. Based on 7,906,617 shares of common stock outstanding
on the Consent  Record Date,  the initial  amount  expected to be distributed to
shareholders  is expected to be  approximately  $2.01 per share.  Because of the
duration of the Escrow  Agreement,  the Company will not dissolve formally until
all  escrowed  funds  have  either  been  released  to the  Company  or  paid to
HydroChem.  As a result, the Company expects to maintain its corporate existence
for at least three years following the Closing of the  transaction.  As escrowed
funds,  if any,  are released to the Company,  they will be  distributed  to the
common   stockholders.   After  all  escrowed   funds  have  been  released  and
distributed, the Company will dissolve and cease its corporate existence.


                                 SPECIAL FACTORS

Principal Reasons for the Sale

         On September 8, 1998, the Board of Directors of the Company unanimously
approved  the  sale  of  substantially  all of the  assets  of the  Company  and

                                      -8-
<PAGE>

unanimously  recommended  the proposed sale  transaction  with  HydroChem to the
Company's stockholders for their approval as required under the Exchange Act.

         The Board's  conclusion to approve the sale of the Company's assets was
based on the collective,  subjective  judgments of its individual  members.  The
Board of Directors has  considered the terms and conditions of the Agreement and
the  Escrow  Agreement  and has  determined  that the  Agreement  and the Escrow
Agreement  are fair  to,  and in the  best  interest  of,  the  Company  and its
stockholders.  The Board's  determination  of fairness is a  subjective  and not
solely an economic  determination.  In making their  respective  determinations,
which determinations were the product of the business judgment of the respective
members thereof, exercised in light of their fiduciary duties to the Company and
the stockholders of the Company,  the Board of Directors reviewed and considered
information and documentation relating to the Agreement and the Escrow Agreement
and  considered a number of other factors  including , without  limitation,  the
following:  (i) the recent  delisting  of the  Company's  Common  Stock from The
Nasdaq National Market and its subsequent listing on The Nasdaq SmallCap Market,
(ii) the  recent  trading  price of the  Company's  Common  Stock on The  Nasdaq
SmallCap Market,  (iii) the Board's belief that the sale maximizes the per share
price obtainable by the Company's common stockholders given the Company's recent
and expected future financial  performance,  and (iv) that the purchase price to
be received by the Company in the Sale exceeds the purchase price discussed with
another  interested  third  party.  In  view  of the  wide  variety  of  factors
considered,  the Board of Directors did not find it practicable to, and did not,
quantify or otherwise attempt to assign relative weights to the specific factors
considered in making their determination.  No additional factors were considered
by the Board, nor did the Company retain the services of a financial  advisor or
any third party to evaluate the terms of the proposed transaction, and no formal
analysis with respect to the value of the assets to be sold was performed.

History of the Sale

         In November  1997,  Joe Young, a Director of the Company and an officer
of Rollins Investment Fund, the Company's largest common stockholder, received a
telephone  call  from Mr.  Pelham  H. A.  Smith,  Vice  President  of  Corporate
Development for HydroChem.  Mr. Smith asked Mr. Young whether or not the Company
might have an interest in being acquired by HydroChem.  Mr. Young told Mr. Smith
that the Company had no interest  in such a  transaction  at that time.  Between
January 1998 and March 17, 1998,  Mr.  Smith called Mr. Young  several  times to
determine  whether or not the  Company's  position had  changed.  In view of the
Company's  Common Stock  trading price during the first three months of 1998 and
the Company's  being delisted from The Nasdaq National Market and its subsequent
listing on The Nasdaq  SmallCap  Market,  Mr. Young and Rollins  Investment Fund
determined that a transaction such as that proposed by HydroChem could be in the
best interests of the Company and its  stockholders.  As a result,  on March 17,
1998, Mr. Young informed Mr. Smith of the Company's potential interest in such a
transaction and forwarded certain limited  information  regarding the Company to
HydroChem.  Between  March 18, 1998 and April 29, 1998,  Mr. Young and Mr. Smith
had several more  discussions  and Mr.  Young  provided  additional  information
regarding the Company to Mr. Smith.  On April 29, 1998, Mr. Young sent a memo to
Mr. Smith informing him that due to  unavailability of the principals of Rollins
Investment  Fund, he would be unable to have further  discussions with Mr. Smith
regarding  the  proposed  transaction  prior to May 18,  1998.  On May 27, 1998,
Rollins  Investment Fund authorized Mr. Young to proceed with  negotiations with

                                      -9-
<PAGE>


HydroChem.   On  June  10,  1998,  both  parties  entered  into  confidentiality
agreements with respect to information disclosed in performing due diligence. On
July 13 and 29,  1998,  Mr.  Young  forwarded  additional  limited  Company  due
diligence  materials to Mr. Smith. On August 13, 1998, Mr. Young,  Mr. Smith, Ed
Strickland,  President and Chief  Executive  Officer of the Company,  and B. Tom
Carter,  Jr., Chairman and Chief Executive Officer of HydroChem,  met in Atlanta
to discuss the Sale. On August 25, 1998,  Mr. Young,  Mr. Smith,  Mr. Carter and
their  respective  attorneys  met in Atlanta to negotiate  the Sale.  During the
approximately two-week period following August 25, several conference calls were
held among the above referenced  parties to finalize the Sale  negotiations.  On
September 8, 1998, the Board of Directors of the Company,  by unanimous consent,
approved the Sale and the Agreement was executed.

Interests of Certain Persons in the Sale

         Stockholders of the Company should be aware that certain members of the
management of the Company and its Board of Directors  have certain  interests in
the Sale in addition to the interests of stockholders  generally.  Joe M. Young,
presently a director of the Company,  is General  Manager of Rollins  Investment
Fund, the Company's largest common  stockholder,  and was appointed to the Board
of Directors of the Company pursuant to a right guaranteed to Rollins Investment
Fund in connection  with its purchase of Common Stock of the Company in December
1991.  Approximately  $8.3  million  dollars of debt of the Company is currently
guaranteed by Rollins Investment Fund. At the Closing, HydroChem will repay this
$8.3 million and Rollins Investment Fund will be released from its guaranty.  Ed
Strickland,  President and Chief Executive  Officer of the Company since October
1993,  is an  officer  of LOR,  Inc.,  which is owned by  affiliates  of Rollins
Investment Fund.

         Rollins Holding Company,  Inc., an affiliate of Rollins Investment Fund
and Mr. Young, are the holders of all of the outstanding shares of the Company's
Series C Preferred  Stock.  Following the Closing,  the Series C Preferred Stock
held by Rollins Holding  Company,  Inc. will receive a liquidating  distribution
from the Company of  approximately  $5.5 million dollars,  plus unpaid,  accrued
dividends,  estimated to be  approximately  $64,167,  assuming a Closing Date on
November 30, 1998.

         Also, executive officers and directors of the Company listed below have
options to purchase an aggregate of 175,000 shares of the Company's Common Stock
which  are  expected  to be  redeemed  at a price  of  $3.00  per  option  share
(including  the  expected  termination  bonus) less the exercise  price  thereof
($1.50 per share in each instance) in connection  with the  consummation  of the
transactions contemplated by the Agreement, as follows: Ed Strickland, President
and Chief Executive Officer,  100,000 shares,  Dennis D. Sheets,  Vice President
and Chief  Financial  Officer,  25,000 shares,  Joe M. Young,  Director,  30,000
shares, Allen O. Kinder, Director, 20,000 shares.

Stockholder Approval

         The Company is a Delaware  corporation.  The Company  believes that the
Sale constitutes a sale of substantially  all of the assets of the Company under
Delaware law and therefore requires stockholder approval by the affirmative vote

                                      -10-
<PAGE>

of a majority of the votes cast by the Company's Common  stockholders and Series
C Preferred stockholders,  voting together as a group, with each share of Common
Stock and Series C Preferred  Stock  having one vote.  As of the Consent  Record
Date, Rollins Investment Fund owned  approximately 76% of the outstanding Common
Stock  of the  Company  and  Rollins  Holding  Company,  Inc.  owned  all of the
Company's  outstanding  Series C Preferred  Stock.  On October __, 1998, each of
Rollins  Investment  Fund and Rollins  Holding  Company,  Inc.  signed a written
consent  voting  their  shares  to  approve  the  Sale in  accordance  with  the
Agreement.  These votes,  by themselves,  are sufficient to achieve  stockholder
approval of the Sale.  Since  stockholder  approval has been obtained by written
consent rather than at a meeting of the  stockholders of the Company,  under the
rules of the Exchange Act, such approval will not be effective until 20 calendar
days from the date of this Information Statement.

No Rights of Dissenting Stockholders

         Under Delaware law, dissenting stockholders will not have any rights of
appraisal upon the approval or consummation of the transaction.

Accounting Treatment

         In accordance with General Accepted Accounting Principals,  any gain or
loss on the sale will be recognized as of the date the Sale is closed.

Regulatory Requirements

         Under  the  Hart-Scott-Rodino-Antitrust  Improvements  Act of 1976,  as
amended  ("HSR Act") and the rules  promulgated  thereunder by the Federal Trade
Commission ("FTC"), certain transactions,  including the sale of assets, may not
be consummated  unless certain filing and waiting period  requirements have been
satisfied.  On October 6, 1998,  the  Company  and  HydroChem  filed  applicable
documents with the FTC and requested early termination of the waiting period. If
the request for early termination is not granted,  the applicable waiting period
will expire on November 5, 1998.  At any time before or after the  Closing,  the
FTC, the  Department  of Justice or others could take action under the antitrust
laws with respect to the Sale,  including  seeking to enjoin the consummation of
the Sale or  seeking  the  divestiture  by  HydroChem  of all or any part of the
assets acquired.

Certain Federal Income Tax Considerations

         The following  describes  generally the federal income tax consequences
of the proposed transaction to the Company and to its shareholders.  It does not
attempt to provide tax advice to any particular shareholder. It does not address
state  or local  tax  consequences  nor  does it  address  tax  consequences  to
specialized  types of  shareholders  such as  foreign  investors  or  tax-exempt
shareholders.  Each  shareholder is urged to discuss the tax consequences of the
proposed transaction with his or her own tax advisor.

         Tax  consequences at the corporate  level. On the sale of the assets of
the Company and the Subsidiary,  the consolidated group of corporations of which
the Company is common parent (the "Group")  generally  will  recognize  gain for

                                      -11-
<PAGE>


federal income tax purposes to the extent that the amount  realized on such sale
of assets exceeds the Group's basis in any assets being sold. Net operating loss
carryforwards of the Group will be used to offset a portion of such gain.

         Tax  consequences  at  the  shareholder  level.  Provided  the  Company
properly adopts a Plan of Liquidation  and follows the necessary  formalities of
liquidating,  the Company may make liquidating distributions to its shareholders
of the proceeds from the sale of Company  assets.  These  distributions  will be
tax-free  to a  shareholder  to the  extent  of the  shareholder's  basis in the
Company stock owned by the shareholder.  Aggregate  distributions  received by a
shareholder  in excess of basis will be taxable as capital gain to a shareholder
who holds his Company stock as a capital asset and who has held these shares for
more than one year. If aggregate liquidating  distributions to a shareholder are
less than the basis of such  shareholder's  shares,  any loss  recognized by the
shareholder will be recognized in the year in which the shareholder receives the
final liquidating distribution to which such shareholder is entitled.

Delisting from The Nasdaq SmallCap Market

         Following the Closing, the Company anticipates that it will be delisted
from The Nasdaq  SmallCap  Market.  Following such  delisting,  there will be no
trading market for the Company's Common Stock. As a result,  stockholders may be
unable to buy or sell shares of the  Company's  Common Stock and may be required
to maintain their investment in the Company until it has been dissolved.


                          THE ASSET PURCHASE AGREEMENT

         The  following  is a brief  summary of the material  provisions  of the
Agreement.  Such  summary is  qualified  in its  entirety  by  reference  to the
Agreement, a copy of which is attached to this Information Statement as Appendix
A.

Assets to be Sold and Liabilities to be Assumed

         The  assets to be sold by the  Company  to  HydroChem  pursuant  to the
Agreement ("Assets")  constitute  substantially all of the assets of the Company
and Subsidiary of every kind, nature and description  (wherever located), as the
same shall exist on the Closing date ("Closing  Date"),  except as  specifically
excluded.  The assets to be acquired  under the Agreement  include the following
except  as  specifically  excluded:  (i) all real  property,  interests  in real
property   (including,   without   limitation,   leases),   and  structures  and
improvements  located on real  property,  and all the  easements  and uses which
benefit any such real property;  (ii) all notes and accounts  receivable;  (iii)
all  machinery,   inventories,   inventories  of  parts,  computers,  furniture,
furnishings,  fixtures,  office  supplies and  equipment,  automobiles,  trucks,
vehicles,  returnable containers, tools and parts, and work in process; (iv) all
technology,   know-how,  designs,  devices,  processes,   methods,   inventions,
drawings,  schematics,  specifications,   standards,  trade  secrets  and  other

                                      -12-
<PAGE>


proprietary  information,  and all patents  and  applications  therefor  and all
trademarks  and trade names,  trademark  and trade name  registrations,  service
marks and service mark  registrations,  copyrights and copyright  registrations,
the applications  therefor and the licenses thereto,  together with the goodwill
and  the  business   appurtenant   thereto;   (v)  all   drawings,   blueprints,
specifications, designs and data of the Company (including drawings, blueprints,
specifications,  designs and data of the Company used by or in the possession of
any third party); (vi) all catalogues, brochures, sales literature,  promotional
material and other selling material of the Company;  (vii) all books and records
and all files, documents, papers, agreements, books of account and other records
pertaining  to the assets or to the business of the Company which are located at
the offices,  plants,  warehouses or other locations used in connection with the
assets;  (viii)  all  rights,  title  and  interest  of the  Company  under  all
contracts, agreements, licenses, leases, sales orders, purchase orders and other
commitments HydroChem will assume pursuant to the Agreement; (ix) all laboratory
equipment  (including  laboratory notes and supplies) and chemical  inventories;
(x) all  lists of past,  present  and  qualified  prospective  customers  of the
business of the  Company;  (xi) all  goodwill  relating  to the  business of the
Company as a going  concern,  together  with the right to  represent  oneself to
third  parties as the new owner of such  business;  (xii) all  governmental  and
product  licenses and permits,  approvals,  license and permit  applications and
license  and permit  amendment  applications;  (xiii) all claims  against  third
parties,  whether or not asserted and whether now existing or hereafter arising,
related  to the  business  of the  Company  or the  assets  (including,  without
limitation,  all claims based on any  indemnities  or warranties in favor of the
Company  relating to any of the  assets);  (xiv) all other  assets and rights of
every kind and nature, real or personal, tangible or intangible, of the Company;
(xv) all cash on hand,  including  bank accounts  (other than the purchase price
depository account) and temporary cash investments; (xvi) all claims for refunds
of taxes and other  governmental  charges for periods  ending on or prior to the
Closing Date;  and (xvii) all safe deposit boxes and  lockboxes,  as well as the
contents thereof.

         The specifically  excluded assets include: (i) claims or rights against
third parties  relating to liabilities or obligations  not expressly  assumed by
HydroChem;  (ii)  rights  under  insurance  policies,  including  rights  to any
cancellation value on the Closing Date, except that the Company shall assign, to
the extent such  assignment is enforceable,  to HydroChem  rights under policies
(or  make  the  proceeds  available)  with  respect  to  claims  arising  out of
transactions  prior to the  Closing  Date which  HydroChem  shall have agreed to
assume  pursuant to the Agreement;  (iii) the Company stock books,  minute books
and other corporate and financial books and records (but the Company shall, upon
request by HydroChem and, after Closing, at HydroChem's expense,  provide copies
of such financial  books and records to  HydroChem);  (iv) all shares of capital
stock of the Subsidiary;  and (v) funds held in respect of the Company's  401(k)
plan.

         Substantially  all  liabilities  of the  Company  will  be  assumed  by
HydroChem  ("Assumed  Liabilities").  The  Assumed  Liabilities  are:  (i) those
liabilities  or obligations of the Company which are listed on the balance sheet
included in the Company's financial  statements dated June 30, 1998 and included
in its Form 10-K for the fiscal year ended June 30, 1998,  such balance sheet to
be updated to the Closing Date; and (ii) those  liabilities  and  obligations of
the  Company  which arise  under the terms of a  contract,  agreement,  license,
lease,  sales order,  purchase order or other  commitments which are listed on a
disclosure  schedule to the  Agreement  or are not  required by the terms of the
Agreement to be so listed.

         The Assumed  Liabilities  do not include any liability or obligation of
the Company:  (i) under any employee  benefit plan of the Company other than any
accrued liabilities specifically assumed by HydroChem pursuant to the Agreement;
(ii) with respect to any sales, use or excise taxes,  income taxes,  taxes based

                                      -13-
<PAGE>


on or measured by income or franchise  taxes  attributable  to periods or events
prior to or ending on the Closing Date or any sales, use or excise taxes, income
taxes, or any other taxes, legal, accounting, brokerage, finder's fees, or other
expenses of whatsoever  kind or nature incurred by the Company or any affiliate,
stockholder,  director,  employee  or officer of the  Company as a result of the
consummation of the transactions  contemplated by the Agreement (other than such
taxes,  fees and expenses  which are accrued in the ordinary  course of business
prior  to  Closing);  (iii)  arising  out  of any  action,  condition,  suit  or
proceeding  based upon an event  occurring  or a claim  arising (a) prior to the
Closing  Date or (b) after the Closing  Date in the case of claims in respect of
products sold or services  provided by the Company prior to the Closing Date and
attributable  to acts  performed or omitted by the Company  prior to the Closing
Date;  provided,  however,  that  HydroChem  shall assume any such  liability or
obligation to the extent it has been reserved  against on the Company's June 30,
1998  balance  sheet,  updated  to  Closing;  (iv)  pursuant  to  existing  loan
agreements (other than payment  obligations  assumed pursuant to the Agreement),
and all agreements  executed in connection  therewith;  or (v) to any present or
former  stockholder,  officer,  director or employee of the Company  (including,
without limitation, for bonuses, fringe benefits, vacation or holiday pay, wages
or severance pay, but excluding any accrued liabilities  specifically assumed by
HydroChem pursuant to the Agreement).

Representations and Warranties of the Company

         The Agreement  contains certain  representations  and warranties of the
Company,  including  without  limitation,  representations  and warranties  with
respect to (i) the  Company's  due  organization,  qualification,  and corporate
authority for the sale of the Assets;  (ii) possession of all required  material
licenses,  permits  and other  authorizations  required  by  applicable  laws or
governmental regulations in connection with its business as now conducted; (iii)
compliance with both the Company's  certificate of incorporation  and bylaws and
applicable laws; (iv) the Company's good and marketable title to the Assets; (v)
compliance  with all real  property  leases of the Company;  (vi) the  Company's
possession  of rights with respect to  registered  trademarks,  copyrights,  and
patents,  and the absence of  undisclosed  claims or  infringement  with respect
thereto; (vii) the absence of undisclosed  liabilities;  (viii) the identity and
enforceability  of and  the  Company's  compliance  with  all  contracts  of the
Company;   (ix)  the  accuracy  and  completeness  of  the  Company's  financial
statements  for all periods  required to be provided by the  Agreement;  (x) due
payment of all taxes; (xi) the absence of undisclosed  litigation  involving the
Company;  (xii) that the Company is in compliance in all material  respects with
all applicable laws respecting employment and employment  practices;  (xiii) the
Company's insurance  policies;  (xiv) the absence of undisclosed adverse changes
in the  business  relationships  of the  Company  with any of its  customers  or
suppliers;  (xv) that all trade accounts  receivable of the Company reflected on
its June 30, 1998 balance sheet and all trade accounts receivable of the Company
arising  between  June 30, 1998 and the Closing Date have arisen in the ordinary
course of business and represent bona fide, undisputed indebtedness;  (xvi) that
the  inventories  and  supplies  of the Company  reflected  on the June 30, 1998
balance sheet of the Company,  or acquired by the Company between June 30, 1998,
and the date of the Agreement, are carried at not in excess of the lower of cost
or fair market value,  and do not include any  inventory  which is not usable or
saleable  in the  ordinary  course  of  business  of the  Company  as  presently
conducted net of reserves;  (xvii)  compliance  with laws  regulating  hazardous
materials and other  environmental  laws;  (xviii) the Company's  conduct of the
business in the ordinary  course  consistent  with past practices since June 30,
1998;  (xix) the  absence  of  undisclosed  obligations  to pay  finder's  fees,
brokerage or agent's  commissions or other like payments in connection  with the

                                      -14-

<PAGE>


consummation of the transactions  contemplated  thereby; and (xx) the absence of
any material  misstatements  or omissions by either the Company in the Agreement
or any document  furnished to HydroChem in connection  with the execution of the
Agreement.

Representations, Warranties and Covenants of HydroChem

         The Agreement also contains certain  representations  and warranties by
HydroChem  including,  without  limitation,  representations and warranties with
respect to (i) its due organization and corporate  authority for the acquisition
of the Assets; (ii) possession of all required consents on the part of HydroChem
and approvals of governmental authorities; and (iii) compliance with HydroChem's
articles of incorporation and bylaws and applicable laws.

         Additionally,  pursuant to the Agreement,  HydroChem covenants to offer
employment to all of the Company's  employees as of the Closing Date, other than
as otherwise reasonably determined by HydroChem.

Covenants of the Company

         The Agreement contains customary  covenants by the Company,  including,
without limitation,  the following:  (i) the Company will conduct its operations
according  to its ordinary  and usual  course of business  consistent  with past
practice;  (ii) the Company  will use its  reasonable  best  efforts to preserve
intact its business organization and goodwill, to keep available the services of
its officers and  directors,  and to maintain  satisfactory  relationships  with
suppliers,  distributors,  licensors, licensees, customers, employees and others
having  business  relationships  with it; (iii)  afford to HydroChem  and to its
officers, employees,  accountants,  counsel and other authorized representatives
reasonable  access,  throughout  the period  prior to the earlier of the Closing
Date or the date of  termination  of the  Agreement,  to the  Company's  plants,
properties,  equipment, personnel, books and records (including, but not limited
to, audit and tax work papers and surveys, reports, studies, evaluations and the
like  pertaining  to the  environment  at the  Company's  facilities  or  former
facilities  (during  the time of  ownership  or  operation  by the Company or to
activities of the Company);  (iv) use its  reasonable  best efforts to cause its
representatives  to furnish to HydroChem and to its  authorized  representatives
such  additional  financial and operating  data and other  information as to its
respective  businesses  and  properties  as  HydroChem  or its  duly  authorized
representatives  may from  time to time  reasonably  request;  (v)  provide  all
authorizations  reasonably  necessary  for  HydroChem  to review  records of any
governmental   body  with   jurisdiction;   (vi)   afford   HydroChem   and  its
representatives reasonable access, throughout the period prior to the earlier of
the Closing Date or the date of termination of the Agreement, to its present and
potential customers, and HydroChem and its authorized representatives shall have
the right to contact such customers and conduct such due diligence investigation
relating to customer  relations  as  HydroChem  deems  reasonably  necessary  or
appropriate;   (vii)  the  Company  shall  unconditionally  guarantee  that  all
indebtedness  represented  by the accounts  receivable  of the Company as of the
Closing Date (less the reserve for doubtful  accounts not to exceed an aggregate
of $125,000) will be received by HydroChem; (viii) the Company shall discontinue
all use of the name "Valley Systems,  Inc." and any and all derivations  thereof
within 30 days after the Closing  Date (other than in respect of the name of the
Company's  401(k) plan prior to its  termination);  (ix) the  Company  shall not
dissolve  until the entire Escrow Fund has been released  pursuant to the Escrow
Agreement;  (x) the  Company  shall  deliver to  HydroChem  unaudited  financial

                                      -15-

<PAGE>


statements  (including a consolidated balance sheet,  consolidated  statement of
operations,  consolidated statement of cash flows, and consolidated statement of
stockholders'  equity) and other operating reports for each month beginning with
July 1998 and ending with the month preceding the month during which the Closing
occurs; (xi) on or after the date of the Agreement, and until the earlier of the
Closing Date or the date of termination of the Agreement,  the Company shall not
furnish any written communication (other than this Information Statement) to its
stockholders,  customers,  creditors  or to the public  generally if the subject
matter thereof relates to the transactions contemplated by the Agreement without
the prior approval of HydroChem; provided, however, that the foregoing shall not
be deemed to prohibit any  disclosure  required by any  applicable law or by any
governmental body having jurisdiction over such matters; (xii) the Company shall
give prompt notice to HydroChem,  and HydroChem  shall give prompt notice to the
Company, of (a) the occurrence, or failure to occur, of any event the occurrence
or failure of which would be likely to cause any  representation  or warranty of
such party contained in the Agreement to be untrue or inaccurate in any material
respect at any time from the date of the Agreement to the Closing Date,  and (b)
any material failure of the Company, or of HydroChem,  as the case may be, or of
any officer, director,  employee or agent thereof, to comply with or satisfy any
covenant,  condition or  agreement to be complied  with or satisfied by it under
the Agreement; and (xiii) the Company agrees to use its best efforts to take, or
cause to be  taken,  all  actions,  and to do, or cause to be done,  all  things
reasonably  necessary,  proper or advisable to consummate and make effective the
transactions  contemplated  by  the  Agreement,  including  without  limitation,
obtaining all authorizations, consents, waivers and approvals as may be required
in connection  with the  assignment of those  contracts,  agreements,  licenses,
leases,  sales orders,  purchase  orders and other  commitments to be assumed by
HydroChem; provided that the Company shall not be obligated to make any payments
in order to obtain any such authorizations, consents, waivers or approvals.

Negative Covenants of the Company

         The Company has agreed that,  prior to the Closing,  except as provided
in the  Agreement  or pursuant to the prior  consent of  HydroChem,  neither the
Company nor any subsidiary thereof, will do any of the following: (i) other than
dividends  that would be paid to the holders of the Series C Preferred  Stock in
the ordinary course, declare or pay any cash dividends on its outstanding shares
of capital  stock;  (ii) merge  with,  consolidate  with,  sell its assets to or
acquire  substantially all the assets or capital stock of, any other corporation
or person,  or enter into any other  transaction  not in the  ordinary and usual
course of its  business;  (iii) incur any  indebtedness  for  borrowed  money or
guarantee  any  such  indebtedness  or issue  or sell  any  debt  securities  or
guarantee any debt securities of others,  except that it may incur  indebtedness
in the ordinary course of business consistent with prior practice; (iv) make any
direct or  indirect  redemption,  purchase  or other  acquisition  of any of its
capital stock;  (v) create or amend any pension or profit  sharing plan,  bonus,
deferred  compensation,  death benefit, or retirement plan, or any other benefit
plan or program;  (vi) amend its certificate of incorporation or bylaws,  except
as may be  necessary  to carry out the  Agreement  or as required by law;  (vii)
issue any share of its capital stock, effect any stock split or otherwise change
its  capitalization  as it exists on the date of the  Agreement;  (viii)  grant,
confer or award any options,  warrants,  conversion rights or other rights,  not
existing  on the date of the  Agreement,  to acquire  any shares of its  capital
stock;  (ix) enter into any  agreement  or make any  undertaking  which could be
violated,  or create  obligations  which  could be  accelerated,  as a result of


                                      -16-
<PAGE>

changes or  developments  or the  absence of  changes  or  developments  in, the
business, assets, earnings, operations or condition,  financial or otherwise, of
any other party to the Agreement or any of its  subsidiaries  or affiliates;  or
(x) make any material changes in any of their respective  management  employment
arrangements.

Indemnification

         Pursuant to the Agreement, the Company has agreed to indemnify, defend,
protect,  save and hold harmless HydroChem against, and will reimburse HydroChem
for, any and all losses made or incurred by or asserted  against  HydroChem,  at
any time after the Closing Date, directly or indirectly, arising out of, related
to,  caused  by,  or  resulting  from  any of the  following:  (i)  any  and all
liabilities  or  obligations  of the  Company  or claims  against  or imposed on
HydroChem, of any nature, including,  without limitation,  those relating to the
respective  business  activities of the Company or to conditions existing on any
of the  facilities  prior  to the  Closing  Date  not  specifically  assumed  by
HydroChem; (ii) any inaccuracy, omission, misrepresentation,  breach of warranty
or  representation,  or  nonfulfillment  of any  term,  provision,  covenant  or
agreement  on the  part  of the  Company  contained  in  the  Agreement,  or any
inaccuracy or  misrepresentation  in, or omission from, any certificate or other
instrument  furnished or to be furnished by the Company to HydroChem pursuant to
the  Agreement;  (iii) the  Company's  failure to comply with any bulk  transfer
provisions which may be in effect in the state or states in which the assets are
located;  (iv)  any  breach  by  the  Company  of  the  Company's  environmental
representation  and  warranty  contained in the  Agreement;  and (v) any and all
items  listed  on the  schedules  delivered  subsequent  to the  Closing  timely
objected to by HydroChem and determined not to be items assumed by HydroChem.

         The  Company  will  not be  obligated  to  indemnify  or hold  harmless
HydroChem  from or against  losses  arising  out of or  resulting  from  matters
described  above,  until  the  amount  of  such  losses  individually  or in the
aggregate exceed the amount of $200,000 (the "Floor Amount"), which Floor Amount
shall be deemed to have been  reached by the  Company  when  HydroChem's  losses
exceed the amount of $200,000. Upon reaching the Floor Amount, the Company shall
be required to indemnify  HydroChem  for losses  comprising  the Floor Amount as
well as all losses occurring thereafter only from the escrow fund and only up to
(except in the cases of losses  resulting from fraud) an aggregate  amount equal
to the  amount of the  escrow  fund then  outstanding  (the  "Company's  Ceiling
Amount"). The Company will be obligated to indemnify and hold harmless HydroChem
from or against losses directly or indirectly arising out of, related to, caused
by, or resulting from any inaccuracy,  omission or  misrepresentation  contained
in,  or  breach  of  warranty  or  representation   respecting,   the  Company's
representations in the Agreement with respect to trade accounts receivable up to
the  Company's  Ceiling  Amount  without  regard to the Floor  Amount and,  with
respect  to certain  of the  Company's  representations  in the  Agreement  with
respect to  contracts  and leases,  without  regard to the  materiality  of such
inaccuracy,   omission,   misrepresentation,    or   breach   of   warranty   or
representation.  There shall be no monetary limit on the Company's obligation to
indemnify and hold harmless  HydroChem  from or against  losses  resulting  from
fraud.

         HydroChem agrees to indemnify,  defend, protect, save and hold harmless
the Company  against,  and will reimburse the Company on demand for, any and all
losses made or incurred by or asserted  against the  Company,  at any time after
the Closing Date, directly or indirectly, arising out of, related to, caused by,

                                      -17-
<PAGE>


or resulting from (i) any  inaccuracy,  omission,  misrepresentation,  breach of
warranty, or nonfulfillment of any term, provision, covenant or agreement on the
party  of  HydroChem  contained  in  the  Agreement;  (ii)  any  inaccuracy,  or
misrepresentation  in, or omission  from, any  certificate  or other  instrument
furnished  or to be  furnished  by  HydroChem  to the  Company  pursuant  to the
Agreement;  or (iii)  operation of business  activities  of HydroChem  after the
Closing  Date  involving  the  Assets.   Within  45  days  following  the  first
anniversary  of the  Closing  Date,  HydroChem  shall  deliver to the  Company a
certificate of HydroChem  certifying which of those  liabilities and obligations
of HydroChem  assumed from the Company  pursuant to the Agreement had become due
and  payable  but  had  not  been  paid in  full  or  resolved  as of the  first
anniversary of the Closing Date. With respect to the liabilities and obligations
listed  in such  certificate  (or  which  were  erroneously  omitted  from  such
certificate),  HydroChem's obligations pursuant to the Agreement shall terminate
upon the payment or resolution of such liability or obligation.  With respect to
those liabilities and obligations of HydroChem assumed from the Company pursuant
to the  Agreement  which by their  respective  terms in effect at  Closing  will
become due and payable  later than the first  anniversary  of the Closing  Date,
HydroChem's  obligations  pursuant to the  Agreement  shall  terminate  upon the
payment or resolution of such liability or obligation. With respect to all other
liabilities  and obligations of HydroChem  assumed from the Company  pursuant to
the Agreement, HydroChem's obligations pursuant to the Agreement shall terminate
upon the third  anniversary  of the Closing Date.  In the event the  certificate
referenced above is not timely delivered,  HydroChem's  obligations  pursuant to
the Agreement  shall terminate upon the payment or resolution of all liabilities
assumed pursuant to the Agreement.

         HydroChem  will not be  obligated  to  indemnify  or hold  harmless the
Company  from  or  against  losses  arising  out of or  resulting  from  matters
described  above  (other than  losses  directly  or  indirectly  arising out of,
related to, caused by, or resulting from any  nonfulfillment  of any covenant on
the part of HydroChem  contained in the Agreement with respect to the assumption
of Company liabilities or any certificate related thereto),  until the amount of
such losses  individually  or in the  aggregate  exceed the Floor  Amount.  Upon
reaching the Floor Amount,  HydroChem shall be required to indemnify the Company
for  losses  comprising  the  Floor  Amount  as  well  as all  losses  occurring
thereafter  only up to (except in the cases of losses  resulting  from fraud) an
aggregate amount equal to $12 million ("HydroChem's Ceiling Amount").  HydroChem
will be  obligated to  indemnify  and hold  harmless the Company from or against
losses  directly  or  indirectly  arising  out of,  related  to,  caused  by, or
resulting  from any  nonfulfillment  of any  covenant  on the part of  HydroChem
contained in the Agreement with respect to the assumption of Company liabilities
up to HydroChem's  Ceiling  Amount,  without  regard to the Floor Amount.  There
shall be no monetary  limit on  HydroChem's  obligation  to  indemnify  and hold
harmless the Company from or against losses resulting from fraud.

         Notwithstanding  anything to the contrary  contained in the  Agreement,
the  parties  agree  that  HydroChem's  sole  remedy  for any claim for  damages
(excluding  equitable remedies and those resulting from fraud) arising under the
Agreement  (including the disclosure  schedules) or any other agreement  between
HydroChem and the Company  entered into in connection  therewith  (including any
claim  based  upon  the  Company's  warranties,  representations  and  covenants
contained in the  Agreement)  shall be limited to the  remedies  provided in the
indemnification  provisions of the  Agreement  and the  provisions of the Escrow
Agreement. Further, HydroChem waives all other statutory or common law rights to
recover   against  the  Company  for  any  matter   relating  to   environmental
contamination, environmental liabilities or hazardous materials.

                                      -18-
<PAGE>

Company's Conditions To Closing

         The  Company's  obligations  under the  Agreement  are  subject  to the
satisfaction at Closing of each of the following conditions:  (i) the holders of
shares of the issued and  outstanding  capital  stock of the Company  shall have
duly  adopted and  approved  the  Agreement  and all  transactions  contemplated
thereby in accordance  with the  requirements  of Delaware law and the Company's
Certificate  of  Incorporation  and  Bylaws,  as  amended  to the  date  of such
adoption;  (ii) all representations and warranties of HydroChem contained in the
Agreement  shall  be  true  and  correct  at and as of the  Closing  Date in all
material  respects  and  HydroChem  shall  have  performed  all  agreements  and
covenants in all material  respects and satisfied all  conditions on its part to
be  performed  or  satisfied  by the Closing  Date  pursuant to the terms of the
Agreement, and the Company shall have received a certificate of HydroChem signed
by its Chief Executive Officer and dated the Closing Date, to both such effects;
(iii)  HydroChem  shall have  effected  payment of the purchase  price (less the
escrow funds) in accordance with the prior written  instructions of the Company;
(iv)  HydroChem  shall have  executed and delivered  the Escrow  Agreement;  (v)
HydroChem  shall have effected  payment of the escrow funds to the escrow agent;
(vi) the escrow  agent shall have  acknowledged  receipt of the escrow funds and
accepted the same subject to the terms and  conditions of the Escrow  Agreement;
(vii) HydroChem shall have executed and delivered a bill of sale, assignment and
assumption  agreement;  (viii)  HydroChem  shall have delivered to the Company a
certificate,   dated  the  Closing  Date,  of  HydroChem's  corporate  Secretary
certifying: (a) resolutions of its board of directors adopting and approving the
Agreement and all transactions contemplated thereby and authorizing execution of
the Agreement and the  execution,  performance  and delivery of all  agreements,
documents and transactions  contemplated  thereby; and (b) the incumbency of its
officers  executing the Agreement and all agreements and documents  contemplated
thereby;  (ix) the  Company  shall have  received  from  Haynes and Boone,  LLP,
counsel of  HydroChem,  an opinion,  dated the Closing  Date, as specified in an
exhibit to the Agreement; (x) the approval and all consents from any third party
or governmental body required to consummate the transactions contemplated by the
Agreement  shall have been  obtained  and the waiting  period and any  statutory
extension   thereof   applicable  to  the   consummation  of  the   transactions
contemplated  by the  Agreement  under the HSR Act shall  have  expired  or been
terminated;  (xi) no proceeding  shall have been instituted or threatened  which
questions  the  validity  or legality of the  transactions  contemplated  by the
Agreement or any governmental consent,  approval or authorization  necessary for
the consummation of the transactions contemplated by the Agreement;  (xii) as of
the  Closing,  there  shall  be  no  effective  injunction,   writ,  preliminary
restraining  order or any order of any  nature  issued  by a court of  competent
jurisdiction  directing that the  transactions  provided for in the Agreement or
any of them not be  consummated as so provided or imposing any conditions on the
consummation of the transactions contemplated thereby which is unduly burdensome
on the Company;  (xiii) the Company and all guarantors of any bank  indebtedness
of the  Company  shall have  received a written  release  therefrom  in form and
substance satisfactory to the Company and such guarantors.

HydroChem's Conditions To Closing

         The obligations of HydroChem are subject to the satisfaction at Closing
of each of the following conditions: (i) the holders of shares of the issued and

                                      -19-

<PAGE>

outstanding  capital  stock of the Company  shall have duly adopted and approved
the Agreement and all transactions  contemplated  thereby in accordance with the
requirements  of applicable  law, and the Company's  Articles or  Certificate of
Incorporation  and Bylaws, as amended to the date of such adoption and approval;
(ii)  all  representations  and  warranties  of  the  Company  contained  in the
Agreement  shall be true and correct in all  material  respects at and as of the
Closing Date and the Company shall have  performed all  agreements and covenants
in all  material  respects  and  satisfied  all  conditions  on its  part  to be
performed  or  satisfied  by the Closing  Date  pursuant to the  Agreement,  and
HydroChem  shall  have  received a  certificate  of the  Company,  signed by its
President  and dated the Closing  Date,  to both such  effects;  (iii) as of the
Closing, there shall have been no material adverse changes since the date of the
most recent financial  statements in the Company, and the Company shall not have
suffered any material loss (whether or not insured) by reason of physical damage
caused by fire,  earthquake,  accident  or other  calamity  which  substantially
affects  the value of their  respective  assets,  properties  or  business,  and
HydroChem  shall  have  received a  certificate  of the  Company,  signed by its
principal financial officer and dated the Closing Date, to such effect; (iv) the
Company shall have executed and delivered a receivables  guaranty in the form of
an exhibit to the Agreement; (v) the Company shall have delivered to HydroChem a
Certificate of the Secretary of State (or other  authorized  public official) of
the Company's  jurisdiction of incorporation  certifying as of a date reasonably
close to the Closing Date that the Company has filed all required reports,  paid
all  required  fees and taxes,  and is, as of such date,  in good  standing  and
authorized  to transact  business as a domestic or foreign  corporation,  as the
case may be; (vi) the  Company  shall have  executed  and  delivered  the Escrow
Agreement;  (vii) the escrow agent shall have acknowledged receipt of the escrow
funds and accepted the same  subject to the terms and  conditions  of the Escrow
Agreement;  (viii)  HydroChem  shall have received from Arnall Golden & Gregory,
LLP, counsel for the Company, an opinion dated the Closing Date, as specified on
an  exhibit  to  the  Agreement;  (ix)  the  Company  shall  have  obtained  all
authorizations, consents, waivers and approvals as may be required in connection
with the assignment of those contracts,  agreements,  licenses,  leases,  sales,
orders,  purchase  orders and other  commitments  to be  assigned  to  HydroChem
pursuant to the  Agreement;  (x) the Company shall have executed and delivered a
bill of sale, assignment and assumption  agreement;  (xi) the Company shall have
delivered to HydroChem a  certificate,  dated the Closing Date, of the Company's
corporate  Secretary  certifying:  (a)  resolutions  of the Company's  Board and
stockholders   approving  and  adopting  the  Agreement  and  all   transactions
contemplated  thereby  and  authorizing  execution  of  the  Agreement  and  the
execution,   performance   and  delivery  of  all   agreements,   documents  and
transactions  contemplated  thereby;  and (b)  the  incumbency  of its  officers
executing the Agreement and all agreements and documents  contemplated  thereby;
(xii) the approval and all consents  from any third party or  governmental  body
required to consummate the transactions contemplated by the Agreement shall have
been  obtained  and the  waiting  period  and any  statutory  extension  thereof
applicable to the consummation of the transactions contemplated by the Agreement
under the HSR Act shall have expired or been  terminated;  (xiii) no  proceeding
shall have been  instituted  or  threatened  which  questions  the  validity  or
legality of the  transactions  contemplated by the Agreement or any governmental
consent,  approval  or  authorization  necessary  for  the  consummation  of the
transactions contemplated by the Agreement; (xiv) as of the Closing, there shall
be no effective injunction,  writ, preliminary restraining order or any order of
any  nature  issued  by a court of  competent  jurisdiction  directing  that the
transactions  provided for in the Agreement or any of them not be consummated as
so provided or imposing any conditions on the  consummation of the  transactions
contemplated  by the Agreement  which is unduly  burdensome  on HydroChem;  (xv)

                                      -20-
<PAGE>


HydroChem  shall have received from each of LOR, Inc.,  Rollins  Investment Fund
and Rollins Holding Company,  Inc., an executed  agreement whereby each of them,
on their own behalf and on behalf of their respective  affiliates,  agrees to be
bound by certain restrictive covenants substantially similar to those imposed on
the Company under the heading --  "Restrictive  Covenants";  provided,  however,
that no such  provision  shall  prohibit an  investment  in any  publicly-traded
entity that does not require the filing of a Schedule  13D or Schedule 13G under
the Exchange Act; and (xvi) HydroChem shall have reasonably concluded, following
its environmental due diligence  review,  that there are no "material  breaches"
(as  defined  in the  Agreement)  of the  Company's  warranties  with  regard to
environmental  matters,  provided,  however,  that  such  conclusion  shall  not
preclude  the  remedies of HydroChem  provided  for in the  Agreement  regarding
material breaches.

No Sale Negotiations

         The  Agreement  provides that neither the Company nor any person acting
on its  behalf  will take any  action  (i) to  solicit,  initiate  or  encourage
submission  of  inquiries,  proposals  or offers from any third party other than
HydroChem  relating  to any  acquisition  or purchase of all or a portion of the
assets of, or any equity interest in, the Company,  or (ii) unless the Company's
Board of  Directors  has  determined  that such third party has made a "Superior
Takeover  Proposal"  (as  defined  below),  participate  in any  discussions  or
negotiations  regarding,  or furnish  to any third  party any  information  with
respect to, or otherwise cooperate in any way with, or assist or participate in,
facilitate or encourage,  any effort or attempt by any third party to do or seek
any of the  foregoing.  In the event that (a) the Closing shall fail to occur as
the result of the Company  violating the  provisions  set forth above or (b) the
Company shall have determined that a Superior  Takeover  Proposal exists,  shall
have  elected  to  accept  such  Superior   Takeover  Proposal  and  either  the
transaction  contemplated  thereby is consummated or the Company  terminates the
Agreement as a result of such election,  the Company shall  promptly,  but in no
event  later  than one day after  the  first of such  events  shall  occur,  pay
HydroChem an aggregate fee of $2,000,000,  which amount shall be payable in same
day funds, plus all reasonable out-of-pocket expenses and fees actually incurred
by HydroChem or incurred by banks or other  financial  institutions on behalf of
HydroChem.  A  "Superior  Takeover  Proposal"  means a bona  fide (a)  tender or
exchange offer; (b) proposal for a merger to which the Company would be a party;
(c) consolidation or other business  combination  involving the Company;  or (d)
any other  arrangement  to acquire,  directly or indirectly,  for  consideration
consisting of cash, securities or a combination thereof, all of the Common Stock
of the Company then outstanding or all or substantially all of the assets of the
Company on terms that the Board determines in its good faith reasonable judgment
(after   consultation  with  a  financial   advisor  of  nationally   recognized
reputation)  to be more  favorable to the  stockholders  of the Company than the
transactions contemplated by the Agreement.

Termination Provisions

         The  Agreement  provides that it may be terminated at any time prior to
Closing (i) by mutual  consent of the  parties,  (ii) by either  party if one or
more of the  conditions to such party's  obligations  to proceed to Closing have
not been fulfilled or waived by December 31,1998, (iii) by HydroChem at any time

                                      -21-
<PAGE>


prior  to the  fifteenth  business  day  after  the  delivery  of  exhibits  and
preliminary  schedules  (in a form  reasonably  satisfactory  to  HydroChem)  if
HydroChem's  general due diligence  investigation of the Company discloses facts
or circumstances which reflect in a material adverse way on the Company, (iv) by
HydroChem at any time if there has been a material adverse change in the Company
following  the date of the  Agreement,  (v) by  either  party  as a result  of a
material breach in any representations and warranties made by the other party or
the  failure  to perform  covenants  and  agreements  required  to be  performed
pursuant to the  Agreement,  (vi) by either party if there has been any statute,
rule  or  regulation   enacted  or  promulgated  or  deemed  applicable  to  the
transactions contemplated by the Agreement by any governmental body that, in the
reasonable  judgment of either party,  as the case may be, might (a) result in a
significant  delay in the ability of the parties to consummate  the  transaction
contemplated  by the Agreement;  (b) render the parties unable to consummate the
transactions  contemplated by the Agreement; (c) make such consummation illegal;
or (d) otherwise materially adversely affect the Company, and (vii) by HydroChem
if the Company shall fail to deliver one or more of the preliminary schedules to
the  Agreement  in  accordance  with  the  Agreement  or if one or  more  of the
preliminary  schedules,  as delivered,  differs  materially from the information
concerning  the  Company  provided  by the  Company  to  HydroChem  prior to the
execution of the Agreement.  In the event of any termination of the Agreement as
set forth above,  there shall by no liability on the part of either HydroChem or
the Company to the other,  except for the material breach of any representation,
warranty or  covenant  contained  in the  Agreement  which is in the  reasonable
control of the party in breach.  If the  Agreement is  terminated by the Company
for any reason whatsoever other than a failure of any condition set forth in the
Agreement and HydroChem is not in material breach of its material  covenants and
agreements,  then the Company shall  reimburse  HydroChem  (including  banks and
other financial  institutions that incurred expenses on behalf of HydroChem) for
all  reasonable  out-of-pocket  expenses  and fees  actually  incurred  by it in
connection with the negotiation,  preparation,  execution and performance of the
Agreement.

Restrictive Covenants

         The Agreement  provides that the Company will not, for a period of five
years  following  the  Closing  Date,  compete,  directly  or  indirectly,   for
compensation  or not,  with  HydroChem (i) with regard to any product or service
which is the same as or similar  to that  offered  by the  Company  prior to the
Closing,  (ii) induce or attempt to induce any customer to withdraw,  curtail or
cancel its business with HydroChem, (iii) recruit or otherwise solicit or induce
any person or entity who is, on the Closing Date or  thereafter,  an employee or
vendor of the Company or any subsidiary to terminate his or her employment with,
or  otherwise  cease  his  or her  relationship  with,  HydroChem  or any of its
subsidiaries or affiliates,  (iv) hire,  recruit or otherwise solicit any person
or entity who, within the six months immediately preceding the Closing Date, had
been an employee or vendor of the Company,  or (v) permit the Company's  name to
be used by or engage in or carry on,  directly or indirectly,  either for itself
or as a member of a partnership or as a stockholder,  investor, agent, associate
or consultant of any person, partnership or corporation (other than HydroChem or
a subsidiary or affiliate of HydroChem),  any business in  competition  with the
business as carried on by the Company on the Closing Date.

                                      -22-
<PAGE>


                AVAILABLE INFORMATION AND SOURCES OF INFORMATION

         The  Company  is  subject  to  the  information   requirements  of  the
Securities  Exchange Act of 1934, as amended (the  "Exchange  Act")  (Commission
File No. 0-19343),  and in accordance  therewith files periodic  reports,  proxy
statements  and  other  information  with  the  SEC  relating  to its  business,
financial statements and other matters. Such reports, proxy statements and other
information  may be  inspected  and  copied at the public  reference  facilities
maintained by the SEC at Room 1024,  450 Fifth Street,  N.W.,  Judiciary  Plaza,
Washington,  D.C. 20549 and at the public reference facilities maintained by the
SEC at its regional offices located at Seven World Trade Center, Suite 1300, New
York, New York, 10048; and Citicorp Center, 500 West Madison Street,  Room 1400,
Chicago,  Illinois  60661-2511.  Copies  of such  material  can be  obtained  at
prescribed  rates by writing to the SEC,  Public  Reference  Section,  450 Fifth
Street,  N.W.,  Washington,  D.C. 20549.  The SEC also maintains a web site that
contains  reports,  proxy  and  information  statements  and  other  information
regarding the Company and the  Registration  Statement.  The address of that web
site is  http://www.sec.gov.  The Company's Common Stock is listed on The Nasdaq
SmallCap Market,  and other information with respect to the Company is available
for inspection at 1735 K Street, NW Washington,  D.C. 20006-1500.  The Company's
executive  offices are located at 11580 Lafayette Drive, NW, Canal Fulton,  Ohio
44616, telephone: (330) 854-4526.

         No persons have been  authorized to give any information or to make any
representation,  other than those contained in this  Information  Statement,  in
connection with the  information  contained  herein,  and if given or made, such
information or representation  must not be relied upon as having been authorized
by the Company or any other person.  The delivery of this Information  Statement
shall not, under any circumstances, create an implication that there has been no
change  in the  affairs  of the  Company  since  the  date  hereof  or that  the
information herein is correct as of any time subsequent to the date hereof.

                INCORPORATION OF CERTAIN INFORMATION BY REFERENCE

         The  information in the following  documents  filed by the Company with
the Securities  Exchange  Commission (File No. 0-19343) pursuant to the Exchange
Act is incorporated by reference in this Information Statement:

         1.   The Company's Annual Report on Form 10-K for the fiscal year ended
              June 30, 1998,  filed with the Securities and Exchange  Commission
              on September 28, 1998;

         2.   All  documents  filed by the Company  pursuant to Section 13(a) or
              15(d) of the  Exchange  Act  after  the  date of this  Information
              Statement  and prior to the  closing  of the Sale  shall be deemed
              incorporated by reference in this Information  Statement and to be
              a part hereof from the date of filing of such documents.

         Any  statement  contained  herein  or in a  previously  filed  document
incorporated or deemed to be incorporated by reference herein shall be deemed to
be modified or  superseded  for  purposes of this  Information  Statement to the
extent  that a statement  contained  herein or in any other  subsequently  filed

                                      -23-
<PAGE>

document  which also is or was deemed to be  incorporated  by  reference  herein
modifies  or  supersedes  such  statement.  Any such  statement  so  modified or
superseded  shall  not be  deemed,  except  as so  modified  or  superseded,  to
constitute a part of this Information Statement.

         The information  relating to the Company  contained in this Information
Statement   should  be  read  together  with  the   information   and  documents
incorporated by reference.

         This Information  Statement  incorporates  documents by reference which
are not  presented  herein or delivered  herewith.  Such  documents  (other than
Exhibits to such documents,  unless such Exhibits are specifically  incorporated
by  reference)  are  available  without  charge  to any  person,  including  any
beneficial owner, to whom this Information Statement is delivered,  upon written
or oral  request.  Request  for such  documents  should be directed to Dennis D.
Sheets, Secretary of the Company, telephone: (330) 854-4526.


                                      -24-

753942v3
<PAGE>
755124v1

          
                                   APPENDIX A

                              AMENDED AND RESTATED

                            ASSET PURCHASE AGREEMENT

         This Amended and Restated Asset  Purchase  Agreement is entered into as
of the 8th day of September  1998, by and among HydroChem  Industrial  Services,
Inc.,  a  Delaware  corporation  ("Buyer"),  Valley  Systems,  Inc.,  a Delaware
corporation  ("VSI") and Valley Systems of Ohio,  Inc. an Ohio  corporation  and
wholly-owned subsidiary of VSI ("Seller").

          WHEREAS,  Buyer and VSI have entered into that certain Asset  Purchase
Agreement dated September 8, 1998 (the "Purchase Agreement"); and

         WHEREAS,  the assets intended to be purchased  pursuant to the Purchase
Agreement  (other than certain  assets which are owned by VSI) are the assets of
Seller  and the  obligations  and  liabilities  intended  to be assumed by Buyer
pursuant to the Purchase Agreement are the obligations and liabilities of Seller
as well as VSI; and

         WHEREAS,  VSI is willing to be jointly and severally  responsible  with
Seller for any  obligations  of Seller  which have arisen or may arise under the
Purchase Agreement; and

         WHEREAS,  the parties  hereto  desire to amend and restate the Purchase
Agreement in light of the foregoing and to make such other  modifications as are
provided for herein.

         NOW, THEREFORE, in consideration of the foregoing,  the mutual promises
contained  herein and other good and  valuable  consideration,  the  receipt and
sufficiency of which are hereby  acknowledged by the parties hereto, the parties
hereto agree as follows:

                                   Definitions

         For purposes of this Agreement,  the following terms have the following
meanings.

         "affiliate"--as defined in Section 4.1.

         "Agreement"--this Asset Purchase Agreement.

         "Assets"--as defined in Section 1.1.1.

          "Bill of Sale,  Assignment  and Assumption  Agreement"--as  defined in
Section 1.1.3.

         "Board"--as defined in Section 1.5.



<PAGE>

         "Business Property Rights"--as defined in Section 2.16.2.

         "Buyer"--HydroChem Industrial Services, Inc., a Delaware corporation.
         "Buyer Indemnitees"--as defined in Section 4.1.

         "Buyer's Ceiling Amount"--as defined in Section 4.4.2.

         "CERCLA"--the Comprehensive Environmental Response,  Compensation,  and
Liability Act of 1980 or any  successor  law, and  regulations  and rules issued
pursuant to that Act or any successor law.

         "Claim"--as defined in Section 4.3.

         "Closing"--as defined in Section 1.6.

         "Closing Balance Sheet"--as defined in Section 2.8.5.

         "Closing Date"--as defined in Section 1.6.

         "Closing Financial Statements"--as defined in Section 2.8.5.

         "Closing Schedules"--as defined in Section 1.7.
 .
         "Code"--the  Internal  Revenue  Code  of  1986,  as  amended,  and  the
regulations and rules issued pursuant thereto, as amended.

         "control"--as defined in Section 4.1.

         "Customer"--as defined in Section 5.2.1.

         "Delivery Date"--as defined in Section 1.7.

         "Employee"--any employee of VSI or Seller.

         "Encumbrances"--options,   indentures,   mortgages,  leases,  licenses,
restrictions (other than restrictions under applicable  securities laws), liens,
charges,  assessments,  pledges,  security interests,  adverse claims, equities,
limitations,  community property  interests,  conditions,  equitable  interests,
rights of first  refusal,  easements,  servitudes or other  encumbrances  of any
kind, including any restriction on use, voting, transfer,  receipt of income, or
exercise of any other attribute of ownership.

         "Environment"--soil,  land surface or subsurface strata, surface waters
(including navigable water, ocean waters,  streams,  ponds, drainage basins, and
wetlands), ground water, sediments, ambient air and natural resources.


<PAGE>

         "Environmental Contamination"--as defined in Section 4.5.1.

         "Environmental Due Diligence Review"--as defined in Section 5.5.2.
         "Environmental  Law"--any  federal,  state,  or local law that  governs
protection  of  the  Environment,  including,  without  limitation,  those  laws
relating  to the  Release,  storage or handling of  Hazardous  Materials;  those
relating to the treatment, storage, transport,  disposal, or other management of
waste   materials  of  any  kind,  and  those  relating  to  the  protection  of
Environmentally sensitive areas.

         "Environmental   Liabilities"--any   costs,  damages,   expense,  fine,
penalty,  costs of investigation  and remediation or any other liability arising
from or under any Environmental Law.

         "Environmental Remediation"--as defined in Section 4.5.2.

         "ERISA"--the  Employee  Retirement  Income  Security Act of 1974 or any
successor  law, and  regulations  and rules  issued  pursuant to that Act or any
successor law.

         "Escrow Agent"--as defined in Section 5.3.1

         "Escrow Agreement"--as defined in Section 5.3.1.

         "Escrow Fund"--as defined in Section 1.2.

         "Exchange Act"--as defined in Section 2.8.1.

         "Expenses"--as defined in Section 5.11.

         "Facilities"--any  real  property,   leaseholds,   or  other  interests
currently  owned or  operated  by VSI or  Seller  and any  buildings,  plants or
structures currently owned or operated by VSI or Seller.

         "Former Facilities"--any real property,  leaseholds, or other interests
formerly  owned or  operated  by VSI or  Seller  and any  buildings,  plants  or
structures formerly owned or operated by VSI or Seller.

         "Financial Statements"--as defined in Section 2.8.4.

         "Floor Amount"--as defined in Section 4.4.

         "fraud"--fraud  perpetrated  or alleged to have been  perpetrated by an
Indemnifying Party against an Indemnified Party.

<PAGE>

          "GAAP"--United   States  generally  accepted  accounting   principles,
applied on a consistent basis.

         "Governmental Body"--any:

          (a) nation,  state,  county, city, town, village,  district,  or other
jurisdiction of any nature;

          (b) federal, state, local, municipal, foreign, or other government;

         (c)  governmental  authority of any nature  (including any governmental
agency, branch, department, or entity and any court or other tribunal);

         (d)      multi-national organization or body; or

         (e) body  exercising,  or entitled  to  exercise,  any  administrative,
executive,  judicial,  legislative,  police,  regulatory, or taxing authority or
power of any nature.

         "Hazardous   Materials"--any   "hazardous   substance,"  "pollutant  or
contaminant,"  and  "petroleum"  and "natural  gas  liquids," as those terms are
defined or used in Section  101 of CERCLA,  and any other  substances  regulated
because  of their  effect  or  potential  effect  on public  health  and/or  the
Environment  including,  without limitation,  PCB's, lead paint,  asbestos,  and
radioactive materials.

         "HSR Act"--the  Hart-Scott-Rodino Antitrust Improvements Act of 1976 or
any successor law, and  regulations and rules issued pursuant to that Act or any
successor law.

         "Indemnified Party"--as defined in Section 4.3.

         "Indemnifying Party"--as defined in Section 4.3.

         "knowledge"--the  actual knowledge of any director,  officer,  regional
manager, or branch manager of VSI or Seller.

         "Leases"--as defined in Section 2.12.2.

         "Legal  Requirement"--any  applicable federal, state, local, municipal,
foreign,   international,   multinational,   or  other   administrative   order,
constitution,  law, ordinance, principle of common law, regulation,  statute, or
treaty.

         "Losses"--as defined in Section 4.1.

         "material"--an  item is  "material"  if its  presence  or  absence,  as
required by the context,  would have a material  adverse effect upon the assets,
financial condition, results of operations,  business or affairs of a Person and
any  affiliates of such Person with whom such Person,  in accordance  with GAAP,
consolidates financial statements, taken as a whole.

<PAGE>

         "Order"--any award, decision,  injunction,  judgment, order, ruling, or
verdict entered, issued, made, or rendered by any court,  administrative agency,
or other Governmental Body or by any arbitrator.

         "Person"--any   individual,   corporation   (including  any  non-profit
corporation),  general or limited partnership,  limited liability company, joint
venture, estate, trust, association,  organization, labor union, or other entity
or Governmental Body.

         "Preliminary Schedules"--as defined in Section 1.7.
 .
         "Proceeding"--any action, arbitration,  audit, hearing,  investigation,
inquiry,   litigation,   or  suit  (whether  civil,  criminal,   administrative,
investigative,  or  informal)  commenced,  brought,  conducted,  or  heard by or
before, or otherwise involving, any Governmental Body or arbitrator.

         "Proxy Materials"--as defined in Section 1.5.

         "Purchase Price"--as defined in Section 1.2.

         "Receivables Guaranty"--as defined in Section 5.1.

         "Release"--any spilling,  leaking, emitting,  discharging,  depositing,
escaping,  leaching,  dumping, pumping, pouring, emptying, or injecting into the
Environment, whether intentional or unintentional.

         "Rules"--as defined in Section 5.15.

          "Schedules"--all   Schedules   to  this   Agreement,   including   the
Preliminary Schedules and the Closing Schedules.

         "SEC"--as defined in Section 2.8.2.
 .
         "SEC Reports"--as defined in Section 2.8.2.

         "Securities Act"--as defined in Section 2.8.1.

          "Seller"--Valley Systems of Ohio, Inc., an Ohio corporation (including
all prior subsidiaries).

         "Seller's Ceiling Amount"--as defined in Section 4.4.1.

          "Stockholders"--Rollins  Investment  Fund;  Rollins  Holding  Company,
Inc.; and their respective affiliates.


<PAGE>

         "Superior Takeover Proposal"--as defined in Section 5.6.

         "Termination Date"--as defined in Section 5.4.1.

         "Third Party"--as defined in Section 5.6.
         "Third Party Claim"--as defined in Section 4.3.

         "Threatened"--a  claim,  Proceeding,  dispute,  action, or other matter
will be deemed to have been "Threatened" if any demand,  notice or statement has
been made (orally, to the knowledge of Seller, or in writing).

          "VSI"--Valley  Systems,  Inc., a Delaware  corporation  (including all
prior subsidiaries).

         "WARN"--as defined in Section 2.18.7.

          1. Purchase and Sale of Assets; Assumption of Specified Liabilities.

                  1.1      Agreement to Purchase and Sell.

                           1.1.1 Upon the terms and  subject  to the  conditions
                  set forth herein and upon the  representations  and warranties
                  made herein by each of the parties hereto,  at the Closing (as
                  such  term is  hereinafter  defined),  each of VSI and  Seller
                  respectively shall sell, grant, convey,  assign,  transfer and
                  deliver to Buyer,  and Buyer shall  purchase  and acquire from
                  each of VSI and  Seller  respectively,  all of the  respective
                  assets and properties of each of VSI and Seller of every kind,
                  nature and description  (wherever located),  as the same shall
                  exist on the Closing Date,  except those assets and properties
                  specifically  excluded  pursuant to Section 1.1.2 hereof (said
                  assets  and  properties  so to  be  sold,  granted,  conveyed,
                  transferred, assigned and delivered to Buyer being hereinafter
                  collectively  referred to as the "Assets").  Without  limiting
                  the generality of the foregoing, the Assets shall include, but
                  shall not be limited to, the following  respective  assets and
                  properties of each of VSI and Seller:

                                    (i) all  real  property,  interests  in real
                           property (including, without limitation, leases), and
                           structures and improvements located on real property,
                           and all the easements and uses which benefit any such
                           real property;

                                    (ii)    all notes and accounts receivable;

                                    (iii)    all     machinery,     inventories,
                           inventories   of   parts,    computers,    furniture,
                           furnishings, fixtures, office supplies and equipment,
                           automobiles, trucks, vehicles, returnable containers,
                           tools and parts, and work in process;


<PAGE>

                                    (iv)  all  technology,   know-how,  designs,
                           devices, processes,  methods,  inventions,  drawings,
                           schematics, specifications,  standards, trade secrets
                           and other  proprietary  information,  and all patents
                           and  applications  therefor  and all  trademarks  and
                           trade names,  trademark and trade name registrations,
                           service   marks  and  service   mark   registrations,
                           copyrights   and   copyright    registrations,    the
                           applications   therefor  and  the  licenses  thereto,
                           together   with  the   goodwill   and  the   business
                           appurtenant thereto;

                                    (v)      all      drawings,      blueprints,
                           specifications, designs and data of Seller (including
                           drawings,  blueprints,  specifications,  designs  and
                           data of Seller  used by or in the  possession  of any
                           Third Party);

                                    (vi)  all   catalogues,   brochures,   sales
                           literature,  promotional  material and other  selling
                           material of Seller;

                                    (vii) all books and  records  and all files,
                           documents,  papers, agreements,  books of account and
                           other  records  pertaining  to the  Assets  or to the
                           business of Seller  which are located at the offices,
                           plants,   warehouses  or  other   locations  used  in
                           connection with the Assets;

                                    (viii) all  rights,  title and  interest  of
                           Seller  under all  contracts,  agreements,  licenses,
                           leases,  sales  orders,  purchase  orders  and  other
                           commitments Buyer will assume pursuant to Section 1.3
                           hereof;

                                    (ix)  all  laboratory  equipment  (including
                           laboratory   notes   and   supplies)   and   chemical
                           inventories;

                                    (x) all lists of past, present and qualified
                           prospective customers of the business of Seller;

                                    (xi) all  goodwill  relating to the business
                           of Seller as a going concern, together with the right
                           to  represent  oneself  to third  parties  as the new
                           owner of such business;

                                    (xii) all  governmental and product licenses
                           and   permits,   approvals,    license   and   permit
                           applications   and  license   and  permit   amendment
                           applications;


<PAGE>

                                    (xiii) all  claims  against  third  parties,
                           whether or not  asserted  and whether now existing or
                           hereafter arising,  related to the business of Seller
                           or the Assets  (including,  without  limitation,  all
                           claims  based on any  indemnities  or  warranties  in
                           favor of Seller relating to any of the Assets);

                                    (xiv) all other  assets  and rights of every
                           kind  and  nature,  real  or  personal,  tangible  or
                           intangible, of Seller;

                                    (xv)  all  cash  on  hand,   including  bank
                           accounts  (other than the Purchase  Price  depository
                           account) and temporary cash investments;

                                    (xvi) all  claims  for  refunds of taxes and
                           other  governmental  charges for periods ending on or
                           prior to the Closing Date; and

                                    (xvii) all safe deposit boxes and lockboxes,
                           as well as the contents thereof.

                           Without limiting the generality of the foregoing, the
                  Assets  shall,  except as set forth in Section  1.1.2  hereof,
                  include  all  assets  set  forth in a  detailed  list of fixed
                  assets  as of June 30,  1998,  prepared  from  the  accounting
                  records of VSI and Seller, indicating the respective assets of
                  VSI and Seller, and attached hereto as Schedule 1.1.1, and all
                  such assets as may have been  acquired by VSI or Seller  which
                  would be included on a list  prepared in like manner from such
                  accounting  records as of the  Closing  Date,  except any such
                  assets which may have been disposed of since June 30, 1998, in
                  the  ordinary  course of business on a basis  consistent  with
                  past practice.

                           1.1.2  Anything  herein  contained  to  the  contrary
                  notwithstanding,   the   following   respective   assets   and
                  properties of each of VSI and Seller are specifically excluded
                  from the Assets and shall be retained  respectively  by VSI or
                  Seller:

                                  (i)  claims or rights  against  third  parties
                         relating to liabilities  or  obligations  which are not
                         expressly  assumed by Buyer  pursuant  to  Section  1.3
                         hereof;

                                  (ii)   rights   under   insurance    policies,
                         including  rights  to  any  cancellation  value  on the
                         Closing Date,  except that VSI and Seller shall assign,
                         to the extent such assignment is enforceable,  to Buyer


<PAGE>

                         rights under policies (or make the proceeds  available)
                         with  respect  to claims  arising  out of  transactions
                         prior to the Closing Date which Buyer shall have agreed
                         to assume  pursuant to Section 1.3 below;  in the event
                         that such an assignment is not enforceable and in order
                         that the  full  value of all  rights  of the  character
                         described in this clause (ii) of this Section 1.1.2 and
                         all claims on such  policies may be  realized,  each of
                         VSI and Seller  shall,  by itself or by its agents,  at
                         the  request and  expense  and under the  direction  of
                         Buyer,  until the entire  Escrow Fund has been released
                         pursuant to Section  5.3 hereof,  in the name of VSI or
                         Seller or otherwise as Buyer shall specify and as shall
                         be  permitted  by law,  take all such  action and do or
                         cause  to be done  all  such  things  as  shall  in the
                         reasonable  opinion of Buyer be necessary or proper (x)
                         in order  that  the  rights  of each of VSI and  Seller
                         under such policies shall be preserved and (y) for, and
                         to  facilitate,  the  collection  of the monies due and
                         payable,  and to become due and payable, to each of VSI
                         and Seller in and under every such policy in respect of
                         every such claim, and each of VSI and Seller shall hold
                         the  same  for the  benefit  of and pay the  same  over
                         promptly to Buyer;

                                  (iii) the stock books,  minute books and other
                         corporate  and  financial  books and records of each of
                         VSI and Seller (but each of VSI and Seller shall,  upon
                         request  by  Buyer  and,  after  Closing,   at  Buyer's
                         expense,  provide  copies of such  financial  books and
                         records to Buyer);

                                    (iv) all shares of capital  stock of Seller;
                         and

                                  (v) funds  held in  respect  of the VSI 401(k)
                          plan.

                         1.1.3 Subject to Section 1.1.4 hereof,  at the Closing,
                each of VSI and Seller shall  execute and deliver to Buyer (i) a
                Bill of Sale, Assignment and Assumption  Agreement,  in the form
                attached  hereto as Exhibit  "A" (the "Bill of Sale,  Assignment
                and Assumption Agreement"), under the terms of which each of VSI
                and Seller  shall sell,  grant,  convey,  assign,  transfer  and
                deliver their  respective  portions of the Assets to Buyer,  and
                (ii) such other bills of sale, deeds,  instruments of assignment
                and other appropriate  documents as may be reasonably  requested
                by  Buyer in order to  carry  out the  intentions  and  purposes
                hereof.

                         1.1.4 Nothing in this  Agreement  shall be construed as
                an attempt or agreement to assign (i) any  contract,  agreement,
                license,  lease, sales order, purchase order or other commitment
                which is nonassignable without the consent of the other party or
                parties  thereto  unless such  consent  shall have been given or
                (ii) any  contract or claim as to which all the remedies for the
                enforcement  thereof  enjoyed by VSI or Seller would not pass to

<PAGE>

                Buyer as an incident of the assignments  provided for hereby. In
                order,  however, that the full value of every contract and claim
                of the  character  described  in  clauses  (i) and  (ii) of this
                Section  1.1.4 and all claims and demands on such  contracts may
                be realized,  each of VSI and Seller shall,  by itself or by its
                agents,  at the request and expense and under the  direction  of
                Buyer,  until the entire Escrow Fund has been released  pursuant
                to Section 5.3 hereof, in the name of VSI or Seller or otherwise
                as Buyer shall  specify and as shall be permitted  by law,  take
                all such  action  and do or cause to be done all such  things as
                shall in the reasonable  opinion of Buyer be necessary or proper
                (x) in order that the rights and  obligations of each of VSI and
                Seller under such contracts  shall be preserved and (y) for, and
                to facilitate, the collection of the monies due and payable, and
                to become due and  payable,  to VSI or Seller in and under every
                such  contract  and claim and in respect of every such claim and
                demand,  and each of VSI and Seller  shall hold the same for the
                benefit of and pay the same over promptly to Buyer.

               1.2 Purchase  Price;  Payment.  Upon the terms and subject to the
          conditions  set forth herein,  in reliance  upon the  representations,
          warranties,  covenants  and  agreements  of  each  of VSI  and  Seller
          contained  herein,  and in exchange for the sale,  grant,  conveyance,
          assignment, transfer and delivery of the Assets, Buyer agrees, subject
          to Section 1.9 hereof, to pay to VSI and Seller the sum of $29,800,771
          (the "Purchase Price"), payable at the Closing as follows: (i) by wire
          transfer of  $25,800,771  in  immediately  available  funds to VSI and
          Seller in such bank  accounts  as  designated  by Seller in writing to
          Buyer at least 24 hours prior to the Closing;  and (ii) by  depositing
          $4,000,000  (the  "Escrow  Fund") with the Escrow Agent to be held and
          disposed of pursuant to the Escrow Agreement.

               1.3 Assumption of Specified  Liabilities.  At the Closing, and as
          additional consideration for the sale, grant, conveyance,  assignment,
          transfer and  delivery of the Assets,  subject,  however,  to Sections
          1.1.4 and 1.4 hereof, Buyer shall assume and agree to pay, perform and
          discharge when due only the following:

                         (i) those  liabilities  or  obligations of Seller which
                are listed on Schedule 1.3A hereof (which shall be the detail of
                the  liabilities  reflected in the balance sheet included in the
                Financial  Statements  dated  June 30,  1998 as  updated  to the
                Closing  Date  pursuant  to Section 1.9  hereof)  which  updated
                Schedule 1.3A shall  prevail in the event of a conflict  between
                the  Closing  Balance  Sheet  and  such  updated  Schedule  1.3A
                (depending  upon the category of the liability  being assumed by
                Buyer,  the parties shall mutually agree (as denoted in Schedule
                1.3A)  whether (i) Seller will pay the accrued  liability to the
                obligee and Buyer will  reimburse  Seller for such payments (ii)
                Buyer will pay the amount of the accrued  liability  directly to
                Seller and Seller  will pay the  liability  to the  obligee,  or
                (iii) Buyer will pay the liability directly to the obligee up to
                the amount of the accrued liability); and


<PAGE>

                         (ii) those liabilities and obligations of either of VSI
                or Seller which arise under the terms of a contract,  agreement,
                license,  lease, sales order, purchase order or other commitment
                which is listed on  Schedule  1.3B  hereof  (as  updated  to the
                Closing Date  pursuant to Section 1.9 hereof) or is not required
                by the last  sentence of this  Section  1.3(ii) to be so listed.
                Schedule 1.3B shall only list (x) master  service  agreements of
                Seller assumed by Buyer (y) agreements under which either VSI or
                Seller have indemnified or provided a guaranty to any Person and
                (z)  contracts,  agreements,  licenses,  leases,  sales  orders,
                purchase orders or other  commitments of Seller assumed by Buyer
                which involve  services or annual  payments to or from either of
                VSI or Seller in excess of $10,000.

                Subject to Sections 1.1.4 and 1.4 hereof, at the Closing,  Buyer
        shall  execute  and deliver to Seller the Bill of Sale,  Assignment  and
        Assumption  Agreement assuming the liabilities and obligations of Seller
        referred to in this Section 1.3.

                1.4  Non-Assumption  of  Certain   Liabilities.   Buyer  is  not
        assuming,  and shall not be deemed to have assumed,  any  liabilities or
        obligations of Seller or VSI of any kind or nature whatsoever, except as
        expressly provided in Section 1.3 hereof. Anything in Section 1.3 hereof
        or elsewhere herein to the contrary notwithstanding and without limiting
        the generality of the  foregoing,  it is hereby agreed that Buyer is not
        assuming,  and shall not be deemed to have  assumed,  any  liability and
        shall not have any  obligation  for or with respect to any  liability or
        obligation of VSI or Seller:

                         (i) under any  employee  benefit  plan of VSI or Seller
                other than any accrued liabilities specifically assumed by Buyer
                pursuant to Section 1.3 above;

                         (ii) in respect of (x) any sales,  use or excise taxes,
                income taxes,  taxes based on or measured by income or franchise
                taxes  attributable  to periods or events  prior to or ending on
                the Closing Date or (y) any sales,  use or excise taxes,  income
                taxes,  or  any  other  taxes,  legal,  accounting,   brokerage,
                finder's  fees, or other  expenses of whatsoever  kind or nature
                incurred  by  VSI  or  Seller  or  any  affiliate,  stockholder,
                director,  Employee  or  officer of VSI or Seller as a result of
                the consummation of the transactions  contemplated hereby (other
                than such  taxes,  fees and  expenses  which are  accrued in the
                ordinary course of business prior to Closing);

                         (iii)  arising  out of any action,  condition,  suit or
                proceeding  based upon an event occurring or a claim arising (x)
                prior to the Closing  Date or (y) after the Closing  Date in the
                case of claims in respect of products sold or services  provided

<PAGE>

                by VSI or Seller prior to the Closing Date and  attributable  to
                acts  performed or omitted by VSI or Seller prior to the Closing
                Date,  provided,  however,  that  Buyer  shall  assume  any such
                liability  or  obligation  to the  extent  it has been  reserved
                against on the Closing Balance Sheet;

                         (iv) pursuant to existing loan  agreements  (other than
                payment  obligations assumed pursuant to Section 1.3 above), and
                all agreements executed in connection therewith; or

                         (v) to any  present  or  former  shareholder,  officer,
                director  or  Employee  of VSI  or  Seller  (including,  without
                limitation,  for bonuses,  fringe benefits,  vacation or holiday
                pay,   wages  or  severance   pay,  but  excluding  any  accrued
                liabilities  specifically  assumed by Buyer  pursuant to Section
                1.3 above).

                1.5 Stockholder  Approval;  Voting.  Seller,  acting through its
        board of  directors,  shall,  unless  there  exists a Superior  Takeover
        Proposal,  as soon as  practicable  after the date  hereof  (i) seek the
        written consent of its sole stockholder,  VSI,  approving this Agreement
        and all transactions  contemplated hereby. VSI, acting through its board
        of  directors  (the  "Board"),  shall,  unless  there  exists a Superior
        Takeover Proposal, as soon as practicable after the date hereof (i) seek
        to obtain the written consent of stockholders  owning not less than that
        number of shares of VSI capital stock required  under  applicable law in
        order to approve the transactions  contemplated  hereby;  (ii) recommend
        that such  stockholders  of VSI consent to the  approval and adoption of
        this  Agreement  and  all  transactions   contemplated   hereby;   (iii)
        distribute to its  stockholders  the  definitive  information  statement
        materials  with  respect  to the sale of the Assets in  accordance  with
        Regulation  14C under the Exchange  Act,  other  applicable  federal and
        state laws, (the "Proxy Materials");  (iv) use its reasonable efforts to
        obtain the necessary  approvals by VSI's  stockholders of this Agreement
        and all  transactions  contemplated  hereby;  and (v) will,  as the sole
        stockholder  of  Seller,   consent  in  writing,  with  respect  to  all
        outstanding  shares of capital  stock of Seller,  to the  execution  and
        delivery of, and consummation of the transactions  contemplated by, this
        Agreement  by  Seller.   Contemporaneously  herewith,  each  of  Rollins
        Investment  Fund and Rollins  Holding  Company,  Inc.,  has  executed an
        agreement  whereby  each of them has agreed to consent in writing,  with
        respect to all shares of capital stock of VSI respectively  beneficially
        owned by them, to the execution and delivery of, and consummation of the
        transactions  contemplated by, this Agreement by VSI unless there exists
        a Superior Takeover Proposal.

                1.6 Closing.  The closing of the purchase and sale of the Assets
        provided herein (the "Closing")  shall occur (i) at the office of Haynes
        and Boone,  LLP, 901 Main Street,  Suite 3100,  Dallas,  Texas 75202, at
        10:00 a.m., local time, on the first business day immediately  following
        the  day on or by  which  the  last to be  fulfilled  or  waived  of the

<PAGE>

        conditions set forth in Section 6 hereof shall be fulfilled or waived in
        accordance  herewith  or (ii) at such  other  time and  place or on such
        other date as VSI,  Seller and Buyer may  mutually  agree (such date and
        time of Closing being herein  referred to  collectively  as the "Closing
        Date").

                1.7 Delivery of Schedules and Exhibits.  Within twenty  business
        days of the date of this  Agreement,  VSI and  Seller  shall  deliver to
        Buyer all schedules  (other than Schedule 2.9,  which shall be delivered
        within  twenty-five  business  days of the date of this  Agreement)  and
        exhibits  to this  Agreement  (the  date of  delivery  of the last  such
        schedule or exhibit, including Schedule 2.9, being referred to herein as
        the  "Delivery  Date"),  such  schedules  being true and  correct in all
        material  respects at and as of the Delivery  Date (except for Schedules
        1.1.1 and 1.3A,  which  shall be true and  correct at and as of June 30,
        1998)  (collectively,  the  "Preliminary  Schedules").  The  Preliminary
        Schedules  shall be updated as  required  pursuant to Section 1.3 hereof
        and otherwise as necessary so as to be true and correct at and as of the
        Closing Date (collectively, as so updated, the "Closing Schedules"). The
        Closing  Schedules  shall be  delivered in  accordance  with Section 1.9
        hereof;  provided  that any  objection  by  Buyer to any of the  Closing
        Schedules  delivered  not later than five days prior to Closing  must be
        made by Buyer prior to Closing.  Each of the  Preliminary  Schedules and
        the Closing  Schedules  shall be in a form  reasonably  satisfactory  to
        Buyer.

                1.8 Allocation of Purchase  Price.  The  consideration  given by
        Buyer under this Agreement  (including without limitation the payment of
        the Purchase Price and the assumption of liabilities pursuant to Section
        1.3  hereof)  shall be  allocated  among the Assets in  accordance  with
        section 1060 of the Internal  Revenue Code of 1986, as amended,  and the
        regulations   thereunder.   A  schedule   setting  forth  such  proposed
        allocations  shall be prepared by Buyer and  delivered to Seller  within
        120 days following the Closing Date. The allocation as set forth on such
        schedule shall be reasonably determined by Buyer and shall be reasonably
        satisfactory  to  Seller.  Buyer,  VSI and  Seller  agree  to make  such
        allocation in filing their  respective tax returns or  declarations  for
        applicable United States income tax purposes.


<PAGE>

                1.9      Closing Balance Sheet Adjustment

                        1.9.1 Within 45 days following the Closing Date, VSI and
                Seller, with the reasonable  assistance and cooperation of Buyer
                (including  use of  employees  of Buyer  who were  employees  of
                Seller immediately prior to Closing at no cost to Seller), shall
                prepare and deliver to Buyer the Closing  Balance  Sheet and the
                Closing  Schedules.  The Closing  Balance  Sheet and the Closing
                Schedules  shall be  prepared  from the books and records of VSI
                and Seller concerning their respective  businesses in accordance
                with  GAAP  on  a  basis   consistent  with  that  used  in  the
                preparation  of the  balance  sheet  included  in the  Financial
                Statements  dated  June 30,  1998.  Buyer,  with the  reasonable
                assistance and cooperation of VSI and Seller, shall have 30 days
                to review the Closing  Balance  Sheet and the Closing  Schedules
                after  receipt  thereof  from VSI and  Seller.  On or before the
                expiration of such 30-day period, Buyer shall deliver to VSI and
                Seller a written statement accepting or objecting to the Closing
                Balance Sheet and the Closing Schedules. In the event that Buyer
                shall object to the Closing Balance Sheet, the Closing Schedules
                or both, such statement shall include a detailed  itemization of
                Buyer's objections and its reasons therefor.  If no statement is
                delivered by Buyer to VSI and Seller within such 30-day  period,
                Buyer shall be deemed to have accepted the Closing Balance Sheet
                and the Closing Schedules.

                         1.9.2 In the event that Buyer  shall  timely  object to
                the Closing Balance Sheet,  Buyer, VSI and Seller shall promptly
                meet and in good  faith  attempt to resolve  such  objection  or
                objections.  Any of such  objections  which  cannot be  resolved
                between Buyer, VSI and Seller within 30 days following VSI's and
                Seller's  receipt of Buyer's  statement of  objections  shall be
                submitted to binding  arbitration  conducted by the  independent
                accounting  firm of Arthur Andersen LLP. In the event that Buyer
                shall  timely  object  to  any of the  Closing  Schedules,  such
                objection  shall be resolved in  accordance  with  Section  5.15
                hereof.

                         1.9.3 In the event that the net assets reflected on the
                Closing Balance Sheet,  after all of Buyer's  objections thereto
                shall  have been  resolved  in  accordance  with  Section  1.9.2
                hereof,  are greater or less than $5,353,593 (i.e. the amount of
                the net assets  reflected on the balance  sheet  included in the
                Financial  Statements  dated June 30, 1998),  then the amount of
                any such  excess or  deficiency  shall be paid to VSI and Seller
                (in  the  case  of  an  excess)  or  Buyer  (in  the  case  of a
                deficiency)  by  the  other  by  wire  transfer  of  immediately
                available United States funds within three business days of such
                resolution, receipt of Buyer's written acceptance of the Closing
                Balance  Sheet  or  expiration  of  Buyer's  30-day  period  for
                objection to the Closing Balance Sheet.
<PAGE>

        2.  Representations  and  Warranties  of  Seller  and  VSI.  Subject  to
attachment  of the  Schedules as provided in Section 1.7 hereof,  VSI and Seller
hereby jointly and severally  represent and warrant to Buyer as follows  (Seller
and VSI  reserving the right to attach at the Delivery Date and update at and as
of the Closing Date  Schedules in addition to those called for herein and to add
references   thereto  in  the  following   warranties  and   representations  as
appropriate):

                2.1 Existence;  Good Standing;  Corporate Authority;  Compliance
        With Law. Each of VSI and Seller (i) is a corporation duly incorporated,
        validly existing and in good standing under the laws of its jurisdiction
        of incorporation; (ii) is duly licensed or qualified to do business as a
        foreign  corporation and is in good standing under the laws of any other
        jurisdictions  in which the character of the properties  owned or leased
        by it therein or in which the  transaction  of its  business  makes such
        qualification  necessary  except  where the  failure to be so  qualified
        would not be  material;  (iii)  has all  requisite  corporate  power and
        authority  to own  its  properties  and  carry  on its  business  as now
        conducted;  (iv) is not in material default with respect to any Order of
        any  Governmental  Body or  arbitration  board;  (v) is not in  material
        violation of any Legal Requirement to which it is subject;  and (vi) has
        obtained all material licenses, permits and other authorizations and has
        taken  all  actions   required  by  applicable   laws  or   governmental
        regulations in connection with its business as now conducted.

                2.2      Authorization, Validity and Effect of Agreements.

                         2.2.1 The execution and delivery of this  Agreement and
                all agreements and documents  contemplated  hereby by Seller and
                VSI,  and the  consummation  by each  of  Seller  and VSI of the
                transactions  contemplated  hereby, have been duly authorized by
                the Board and the board of directors  of Seller and,  except for
                the  approval of the  stockholders  of VSI and Seller,  no other
                corporate proceedings on the part of Seller or VSI are necessary
                to authorize  this Agreement and the  transactions  contemplated
                hereby.

                         2.2.2 This  Agreement  constitutes,  and all agreements
                and  documents  contemplated  hereby when executed and delivered
                pursuant  hereto for value received will  constitute,  the valid
                and legally binding obligations of Seller and VSI enforceable in
                accordance with their terms,  except that  enforceability may be
                limited by applicable  bankruptcy,  insolvency,  reorganization,
                fraudulent  transfer,   moratorium,   bulk  sales,   preference,
                equitable  subordination,  marshalling  or other similar laws of
                general  application  now or hereafter in effect relating to the
                enforcement of creditors'  rights  generally and except that the
                remedies of specific performance,  injunction and other forms of
                equitable   relief  are  subject  to  certain  tests  of  equity
                jurisdiction, equitable defenses and the discretion of the court
                before which any proceeding therefor may be brought.

<PAGE>


                         2.2.3 The execution  and delivery of this  Agreement by
                each of Seller  and VSI does not,  and the  consummation  of the
                transactions  contemplated hereby by each of Seller and VSI will
                not,  except as set forth in Schedule 2.2 hereof (which Schedule
                2.2 will include  reference to compliance with the HSR Act), (i)
                require  the   consent,   approval  or   authorization   of,  or
                declaration,  filing or registration with, any Governmental Body
                or any Third  Party;  (ii)  result in the  breach of any term or
                provision  of, or constitute a default  under,  or result in the
                acceleration  of or  entitle  any party to  accelerate  (whether
                after  the  giving  of  notice or the lapse of time or both) any
                obligation under, or result in the creation or imposition of any
                Encumbrance  upon  any part of the  property  of  Seller  or VSI
                pursuant to any  provision of, any Order,  indenture,  mortgage,
                lease, license,  lien, or other agreement or instrument to which
                VSI or Seller is a party or by which either of them is bound; or
                (iii)  violate or conflict  with any  provision of the bylaws or
                the Certificate of  Incorporation of VSI or Seller as amended to
                the  date  hereof

                2.3 Capitalization  and Ownership.  The authorized capital stock
        of VSI consists  solely of (i)  12,000,000  shares of common stock,  par
        value  $.01  per  share,  of  which  7,906,617  shares  and no more  are
        presently  issued and  outstanding  and (ii)  55,000  shares of Series C
        preferred  stock,  par value $0.10 per share, of which 55,000 shares and
        no more are presently issued and outstanding. All issued and outstanding
        shares of capital stock of Seller are owned  beneficially  and of record
        by VSI.  All of such  capital  stock of VSI and of Seller  has been duly
        authorized  and  validly  issued  and is fully  paid and  nonassessable.
        Except as set forth in Schedule  2.3B hereof,  there are no  outstanding
        rights,  warrants,  options,  subscriptions,  agreements or  commitments
        giving anyone any right to require VSI or Seller to sell or issue, or to
        require  VSI or the  Stockholders  to sell or  otherwise  transfer,  any
        capital stock or other securities of VSI or Seller.

                2.4. affiliated  Entities.  Neither VSI nor Seller owns, nor has
        either of them owned since September 4, 1998, directly or indirectly,  a
        majority or controlling  interest in any  corporation  (other than VSI's
        ownership of Seller),  business trust, joint stock company,  partnership
        or other business  organization or association  relating to the business
        operations of Seller.

                2.5  Jurisdictions.  Schedule 2.5 hereof contains a list of all
        jurisdictions  in which each of VSI and Seller is presently  licensed or
        qualified to do business.  To the best knowledge of VSI and Seller,  VSI
        and  Seller  has  each  complied  in  all  material  respects  with  all
        applicable laws of each such  jurisdiction  and all applicable rules and
        regulations of each regulatory  agency  therein.  Neither VSI nor Seller
        (i) has been  denied  admission  to conduct  any type of business in any
        jurisdiction in which it is not presently  admitted as set forth in such
        Schedule  2.5,  (ii) has had its  license or  qualifications  to conduct
        business in any  jurisdiction  revoked or  suspended,  or (iii) has been
        involved  in  any   Proceeding   to  revoke  or  suspend  a  license  or
        qualification.


<PAGE>

                2.6 Records. Each of VSI and Seller shall have delivered or made
        available to Buyer and its counsel on or prior to the Delivery Date true
        and  complete  copies  of its  respective  Certificate  or  Articles  of
        Incorporation,   bylaws,  minutes  of  all  meetings  of  directors  and
        shareholders  and  certificates  reflecting  all  actions  taken  by the
        directors or shareholders without a meeting,  partnership agreements and
        certificates, and other organizational documents, of VSI and Seller, and
        such documents are in full force and effect on the date hereof.

                2.7 Bank  Accounts.  Schedule  2.7 hereof sets forth the name of
        each bank, savings  institution or other Person with which VSI or Seller
        has  an  account,  lockbox  or  safe  deposit  box  and  the  names  and
        identification  of all Persons  authorized  to drawn  thereon or to have
        access thereto.

                2.8      Financial Statements.

                         2.8.1 Since June 30, 1996,  the filings  required to be
                made by each of VSI and Seller under the Securities Act of 1933,
                as amended (the  "Securities  Act"), or the Securities  Exchange
                Act of 1934, as amended (the  "Exchange  Act"),  have been filed
                with  the  SEC as  required  by  each  such  law or  regulation,
                including all forms,  statements,  reports,  agreements  and all
                documents,  exhibits,  amendments and  supplements  appertaining
                thereto,  and  each  of VSI  and  Seller  have  complied  in all
                material  respects  with  all  applicable  requirements  of  the
                appropriate act and the rules and regulations thereunder.

                         2.8.2 VSI and Seller shall have made available to Buyer
                on or prior to the  Delivery  Date a true and  complete  copy of
                each report,  schedule,  registration  statement and  definitive
                proxy  statement  filed by VSI or Seller with the Securities and
                Exchange  Commission  (the  "SEC")  since  June 30,  1996  (such
                documents as filed,  and any and all amendments  thereto,  being
                collectively referred to herein as the "SEC Reports").

                         2.8.3 The SEC Reports, including without limitation any
                financial  statements or schedules included therein, at the time
                filed,  and all forms,  reports or other documents filed by each
                of VSI and Seller  with the SEC after the date  hereof,  did not
                and will not contain any untrue  statement of a material fact or
                omit to state a material fact  required to be stated  therein or
                necessary  to make  the  statements  therein,  in  light  of the
                circumstances under which they were made, not misleading.

                         2.8.4 The audited consolidated financial statements and
                unaudited  interim  financial   statements  of  VSI  and  Seller
                included  in  the  SEC  Reports  (collectively,  the  "Financial
                Statements")  have been prepared,  and the audited  consolidated

<PAGE>

                financial  statements and unaudited interim financial statements
                of VSI and Seller as  included  in all  forms,  reports or other
                documents  filed  with the SEC  after  the date  hereof  will be
                prepared in  accordance  with GAAP  (except as may be  indicated
                therein  or in the notes  thereto  and  except  with  respect to
                unaudited  statements  as  permitted  by Form  10-Q) and  fairly
                present in all material  respects the financial  position of VSI
                and Seller as of the respective  dates thereof or the results of
                operations and cash flows for the respective periods then ended,
                as the  case  may be,  subject,  in the  case  of the  unaudited
                interim  financial  statements,   to  normal,   recurring  audit
                adjustments.

                         2.8.5 As soon as  reasonably  practical  following  the
                Closing Date, VSI and Seller (with the reasonable assistance and
                cooperation  of Buyer and employees of Buyer who were  employees
                of Seller immediately prior to Closing, such assistance to be at
                no cost to VSI or Seller) will cause to be prepared  each of the
                following  with  respect  to VSI  and  Seller,  as at and of the
                Closing  Date:  an  audited   consolidated  balance  sheet  (the
                "Closing Balance Sheet"), an audited  consolidated  statement of
                operations,  an audited consolidated statement of cash flows and
                an  audited  consolidated   statement  of  stockholders'  equity
                (collectively  with the  Closing  Balance  Sheet,  the  "Closing
                Financial Statements"),  which Closing Financial Statements will
                be prepared in accordance  with GAAP on a basis  consistent with
                the Financial Statements. In addition, the Closing Balance Sheet
                shall  be in the  form  of the  balance  sheet  included  in the
                Financial  Statements  dated June 30, 1998. One half of the fees
                paid to independent accounting firms incurred in connection with
                the audit and  preparation of the Closing  Financial  Statements
                shall be paid by VSI and Seller and the other half shall be paid
                by Buyer.

                2.9  Undisclosed  Liabilities.  Neither  VSI nor  Seller has any
        liabilities or obligations  (whether  absolute,  accrued,  contingent or
        otherwise)  of  a  nature   required  by  GAAP  to  be  reflected  in  a
        consolidated   balance  sheet,   except   liabilities,   obligations  or
        contingencies  (i) that are accrued or  reserved  against in the audited
        consolidated  financial statements of VIS and Seller or reflected in the
        notes  thereto for the year ended June 30, 1998,  (ii) have been accrued
        or been  reserved  against  since June 30,  1998,  and are  disclosed on
        Schedule 2.9 or (iii) that were  incurred  after June 30,  1998,  in the
        ordinary  course of business and would not have a material effect on VSI
        or Seller.

                2.10 Absence of Certain Changes or Events.  Since June 30, 1998,
        neither VSI nor Seller has:

                         (i) incurred  any  obligation  or  liability  (fixed or
                contingent),   except  normal  trade  or  business   obligations
                incurred in the ordinary  course of business and consistent with
                past practice,  none of which is materially adverse,  and except

<PAGE>

                in  connection   with  this   Agreement  and  the   transactions
                contemplated hereby;

                         (ii)  discharged or satisfied any  Encumbrance  or paid
                any obligation or liability (fixed or contingent), other than in
                the  ordinary  course  of  business  and  consistent  with  past
                practice;

                         (iii)   mortgaged,   pledged   or   subjected   to  any
                Encumbrance any of its assets or properties (other than inchoate
                real  estate  tax  liens  not  due  and   payable,   mechanic's,
                materialman's   and  similar  statutory  liens  arising  in  the
                ordinary   course  of  business  and  purchase   money  security
                interests  arising  as a  matter  of law  between  the  date  of
                delivery and payment);

                         (iv) transferred,  leased or otherwise  disposed of any
                of its assets or properties  except for a fair  consideration in
                the  ordinary  course  of  business  and  consistent  with  past
                practice  or,  except in the  ordinary  course of  business  and
                consistent   with  past   practice,   acquired   any  assets  or
                properties;

                         (v) cancelled or compromised any debt or claim,  except
                in the  ordinary  course of business  and  consistent  with past
                practice;

                         (vi) waived or released any rights of material value;

                         (vii) except pursuant to those contracts  listed on the
                Schedules  hereof,  transferred  or granted any rights under any
                concessions,  leases, licenses, agreements, patents, inventions,
                trademarks,  trade names,  service  marks or  copyrights or with
                respect to any know-how;

                         (viii)  made or  granted  any wage or  salary  increase
                applicable   to  any  group  or   classification   of  Employees
                generally,  entered into any  employment  contract with, or made
                any loan to, or entered  into any  material  transaction  of any
                other  nature  with,  any  officer  or  Employee,  except in the
                ordinary  course  of  business  or as  listed  on the  Schedules
                hereof;

                         (ix)   entered  into  any   transaction,   contract  or
                commitment,  except (a) contracts listed on the Schedules hereof
                and (b) this Agreement and the transactions contemplated hereby;
                or

                         (x) suffered any  casualty  loss or damage  (whether or
                not such loss or damage  shall have been  covered by  insurance)
                which  affects in any  material  respect  its ability to conduct
                business.

                2.11 Taxes. Each of VSI and Seller (i) has duly and timely filed
        or caused to be filed all federal,  state, local and foreign tax returns

<PAGE>

        (including,   without  limitation,   consolidated  and/or  combined  tax
        returns)  required  to be filed by it  prior  to the date  hereof  which
        relate to it or with  respect  to which it or the  Assets  are liable or
        otherwise  in any way  subject;  (ii) has paid or fully  accrued for all
        taxes shown to be due and payable on such  returns  (which taxes are all
        the taxes due and  payable  under the laws and  regulations  pursuant to
        which such returns were filed);  and (iii) has properly  accrued for all
        such taxes accrued in respect of it or the Assets for periods subsequent
        to the periods  covered by such  returns.  No  deficiency  in payment of
        taxes for any period has been  asserted  by any taxing  body and remains
        unsettled  at the  date  hereof  and no  audits  are in  process  and no
        notification  of audit to begin has been  received  for which claims are
        unasserted.  The consolidated tax returns of VSI and Seller for tax year
        1995 have been audited by the Internal  Revenue  Service.  Copies of all
        federal,  state,  local and foreign income (or franchise) tax returns of
        VSI and  Seller  for tax  years  1996  and  thereafter  have  been  made
        available for inspection by Buyer.

                2.12     Real Property

                         2.12.1  Schedule  2.12A  hereof   identifies  the  real
                property  owned,  either in whole or in part, by each of VSI and
                Seller.

                         2.12.2  Schedule  2.12B  hereof   identifies  the  real
                property  leased or  subleased  by each of VSI and  Seller  (the
                "Leases").  Neither  VSI nor Seller  has  received  any  written
                notification  that it is in default  with  respect to any of the
                Leases nor are there any  disputes  between any landlord and VSI
                or Seller with respect to the Leases that would affect the right
                of VSI or Seller, as the case may be, to remain in possession or
                otherwise affect the current use of the property leased.  Except
                as set forth in Schedule  2.12B  hereof,  each of VSI and Seller
                has performed all material  obligations required to be performed
                by it to date under,  and is not in material  default in respect
                of, any Lease, and no event has occurred which,  with due notice
                or lapse  of time or  both,  would  constitute  such a  material
                default. To the best of each of VSI's and Seller's knowledge, no
                other  party to any  Lease is in  material  default  in  respect
                thereof,  and no event has  occurred  which,  with due notice or
                lapse of time or both, would constitute such a default.

                         2.12.3 True and  complete  copies of all Leases and all
                title  reports,  surveys and other  leases  relating to the real
                property  owned by VSI or Seller shall have been made  available
                to Buyer  or its  representatives  on or  prior to the  Delivery
                Date.

                2.13 Personal  Property.  The machinery,  equipment,  furniture,
        fixtures and other tangible personal  property owned,  leased or used by
        each of VSI and Seller are  sufficient  and  adequate  to carry on their
        respective  businesses as presently  conducted and are in good operating
        condition  and repair and are  suitable  for the purposes for which they
        are used, normal "wear and tear" excepted.
<PAGE>

                2.14 Title to Property;  Encumbrances.  Either VSI or Seller has
        good, valid and, in the case of real properties, marketable title to all
        the  properties  and  assets  shown  on  the  Financial   Statements  or
        thereafter  acquired,  including  the Assets  (except for (i)  inventory
        subsequently  sold  or  otherwise  disposed  of for  fair  value  in the
        ordinary course of business consistent with past practice, (ii) accounts
        receivable  subsequently  collected in the  ordinary  course of business
        consistent with past practice and (iii) immaterial amounts of inventory,
        machinery  and  equipment  that have been  determined  to be obsolete or
        otherwise not necessary and have been disposed of in the ordinary course
        of business consistent with past practice),  in each case free and clear
        of all  Encumbrances  except for any  Encumbrance  reflected in Schedule
        2.14 hereof. All buildings, structures, improvements and fixtures owned,
        leased  or used by VSI or  Seller  in the  conduct  of their  respective
        businesses conform in all material respects to all applicable codes, and
        rules adopted by any applicable  Governmental Body or national and local
        associations  and  boards  of  insurance  underwriters;   and  all  such
        buildings,  structures,  improvements and fixtures are in good operating
        condition and repair, normal "wear and tear" excepted.

                2.15 Insurance.  Schedule 2.15 hereof sets forth a complete list
        of all policies of or binders for fire, liability, worker's compensation
        and other  forms of  insurance  owned or held by each of VSI and Seller.
        All such policies, or binders thereof, are in full force and effect, all
        premiums with respect  thereto  covering all periods up to and including
        the  respective  dates set forth in Schedule 2.15 hereof have been paid,
        and no notice of  cancellation  or  termination  has been  received with
        respect to any such policy or binder.  Such  policies or binders (i) are
        sufficient  for  compliance  with  all  requirements  of  law  currently
        applicable to each of VSI and Seller and of all agreements to which each
        of VSI and Seller is a party or by which any of them is bound;  (ii) are
        in such amounts and types of coverage as are  customarily  maintained by
        businesses  of the size and type as VSI's and  Seller's;  (iii)  provide
        insurance coverage adequate for the Assets and present operations of VSI
        and  Seller;  (iv) will  remain in full  force and  effect  through  the
        respective  dates set forth in Schedule 2.15 hereof  without the payment
        of additional  premiums;  and (v) will not in any way be affected by, or
        terminate or lapse by reason of, the  transactions  contemplated by this
        Agreement.  Schedule 2.15 hereof also identifies all risks which each of
        VSI and Seller has  designated  as being  self-insured.  Neither VSI nor
        Seller has been  refused  any  insurance  with  respect to its assets or
        operations,  nor has its coverage been limited, by any insurance carrier
        to which it has  applied  for any such  insurance  or with  which it has
        carried insurance during the last five years.

                2.16     Business Property Rights

                         2.16.1 Schedule 2.16 hereof sets forth (i) all computer
                software,  patents,  and  registrations  for  trademarks,  trade

<PAGE>

                names,  service marks and  copyrights  which are unexpired as of
                the  date  hereof  and  which  are used in  connection  with the
                operation of each of VSI's and Seller's business, as well as all
                applications  pending on said date for patents or for trademark,
                trade name,  service  mark or copyright  registrations,  and all
                other trade  secrets and  proprietary  rights,  owned or held by
                each of VSI and Seller and which are reasonably necessary to, or
                used in connection with, the business of each of VSI and Seller;
                and (ii) all licenses (other than shrink wrap licenses)  granted
                by or to VSI or Seller and all other  agreements to which VSI or
                Seller is a party and which relate,  in whole or in part, to any
                items of the  categories  mentioned in (i) above or to any trade
                secret or other  proprietary  rights of VSI or Seller  which are
                reasonably  necessary  to,  or  used  in  connection  with,  the
                business of VSI or Seller.

                         2.16.2  The  property  referred  to in  Section  2.16.1
                hereof,  together  with (i) all  designs,  methods,  inventions,
                know-how, related thereto and (ii) all trademarks,  trade names,
                service marks,  and copyrights  claimed or used by either VSI or
                Seller which have not been  registered  (collectively  "Business
                Property Rights"),  constitute all such proprietary rights owned
                or held  by  either  VSI or  Seller  and  which  are  reasonably
                necessary  to, or used in the conduct of the  business of either
                VSI or Seller.  All of those items  designated  as trade secrets
                and  all  related  designs,  methods,  inventions  and  know-how
                constitute  trade secrets of VSI or Seller within the meaning of
                all  applicable  laws,  and each of VSI and Seller has taken all
                necessary  steps  required by law to protect these trade secrets
                as  such.   With  respect  to  each  such  trade   secret,   the
                documentation   relating  to  such  trade   secret  is  current,
                accurate,  and  sufficient  in detail and content to identify it
                and to allow its full and proper use. No such trade  secrets are
                part of the public  knowledge or literature,  nor have they been
                used,  divulged,  or  appropriated  for the benefit of any Third
                Party or otherwise to the detriment of VSI or Seller.

                         2.16.3 Each of VSI and Seller, as the case may be, owns
                or has valid  rights to use all such  Business  Property  Rights
                without conflict with the rights of others.  Except as set forth
                in Schedule 2.21 hereof,  no Person or corporation  has made or,
                to the  knowledge of each of VSI and Seller,  Threatened to make
                any claims that the  operation  of the business of VSI or Seller
                is in violation of or infringes any other  proprietary  or trade
                rights of any Third Party.  To the  knowledge of each of VSI and
                Seller,  no Third Party is in violation of or is infringing upon
                any Business Property Rights.

                2.17 Collective Bargaining  Agreements.  There are no collective
        bargaining  agreements  which relate to either VSI or Seller or to which
        either VSI or Seller is a party or which cover one or more Employees.


<PAGE>

                2.18 Employees

                         2.18.1  Schedule  2.18.  to this  Agreement  contains a
                complete and accurate list of the following information for each
                Employee,  including each Employee on leave of absence or layoff
                status:  (i) name; (ii) address;  (iii) telephone  number;  (iv)
                social security number; (v) date of birth; (vi) job title; (vii)
                date of hire;  (viii)  hourly  or  weekly  compensation  rate in
                effect on June 30, 1998,  and a comparison  of such rate to that
                in effect  on June 30,  1997;  (ix)  vacation  accrued;  and (x)
                service  credited  for  purposes of vesting and  eligibility  to
                participate  under  any  pension,  retirement,   profit-sharing,
                thrift-savings,   deferred  compensation,   stock  bonus,  stock
                option,   cash  bonus,   employee  stock  ownership   (including
                investment  credit or payroll stock  ownership),  severance pay,
                insurance,  medical,  welfare,  or vacation  plan,  or any other
                employee benefit plan. To the best of each of VSI's and Seller's
                knowledge,  during  the past four years  neither  VSI nor Seller
                has,  directly or indirectly,  purchased,  leased,  acquired any
                property  or  obtained  any  services  from,  or  sold,  leased,
                disposed  of any  property  or  furnished  any  services  to, or
                otherwise  dealt  with  any  Employee  or any  Person,  firm  or
                corporation  which,  directly or  indirectly,  alone or together
                with  others,  controls,  is  controlled  by or is under  common
                control with any Employee,  except with respect to  remuneration
                for services rendered as a director,  officer or employee of VSI
                or Seller.

                         2.18.2  To the  best  of  each of  VSI's  and  Seller's
                knowledge,  no part of the property or assets of any Employee or
                any Person,  individual or  organization  directly or indirectly
                related to any Employee is used by VSI or Seller.

                         2.18.3  Neither  VSI nor  Seller  has  encountered  any
                actual or threatened Employee strike, work stoppage, slowdown or
                lockout,  or had  any  material  change  in its  relations  with
                Employees,  agents,  customers or suppliers  for the three years
                prior  to the date of this  Agreement.  No  question  concerning
                representation  has been raised or is threatened with respect to
                the Employees.

                         2.18.4 No  "leased  employee",  as that term is defined
                within  the  meaning  of  Section  414(n) of the Code,  performs
                services for VSI or Seller other than temporary employees.

                         2.18.5   The    consummation   of   the    transactions
                contemplated  by this Agreement will not (i) entitle any current
                or former  Employee or current or former  officer or director of
                VSI or Seller to severance pay, unemployment compensation or any
                other payment,  except as expressly  provided in this Agreement;
                (ii) accelerate the time or payment or vesting,  or increase the
                amount  of  compensation  due  any  such  Employee,  officer  or
<PAGE>

                director;   or  (iii)  result  in  any  prohibited   transaction
                described  in Section  406 of ERISA or Section  4975 of the Code
                for which an exemption is not available.

                         2.18.6  Each of VSI and  Seller  is  currently  and has
                always been in  compliance  in all  material  respects  with all
                applicable laws respecting  employment and employment practices,
                terms and  conditions of wages and hours,  and is not engaged in
                any unfair labor practice.

                         2.18.7  Neither VSI nor Seller (i) has taken any action
                which,  alone or in conjunction with actions committed by VSI or
                Seller  prior to the  Closing  Date to be  taken in the  future,
                would  constitute a "plant  closing" or "mass layoff" within the
                meaning of the Worker Adjustment and Retraining Notification Act
                ("WARN")  or  applicable  state  law;  or (ii)  has  issued  any
                notification of a "plant  closing" or "mass layoff"  required by
                WARN or by applicable state law.

                2.19  Other  Contracts.  Schedule  2.19  hereof  sets  forth all
        contracts,    understandings   and   commitments   (including,   without
        limitation,  mortgages,  indentures and loan agreements) to which either
        VSI or  Seller  is a party,  or to which  either of them or any of their
        respective  assets  or  properties  are  subject,   and  which  are  not
        specifically  referred to in the other Schedules hereof other than those
        which are  exempted  by the terms of Section  1.3(ii)  hereof from being
        listed on Schedule 1.3B.  True and complete  copies of all documents and
        complete descriptions of all oral understandings, if any, referred to in
        the  Schedules  will be  provided  or made  available  to Buyer  and its
        counsel on or prior to the Delivery Date.

                2.20 No Breach or Default. Neither VSI nor Seller is in material
        default  under  any  contract  to  which it is a party or by which it is
        bound,  nor has any event occurred which,  after the giving of notice or
        the passage of time or both,  would  constitute a material default under
        any such contract. Neither VSI nor Seller has any reason to believe that
        the parties to such contracts will not fulfill their  obligations  under
        such  contracts  in  all  material   respects  or  are  threatened  with
        insolvency.

                2.21     Litigation

                         2.21.1  Schedule  2.21  hereof  sets forth a list and a
                summary description of all pending or Threatened  Proceedings in
                respect of each of VSI and Seller,  setting forth,  with respect
                to each action or suit,  (i) the reserves  reflected in the most
                recent Financial Statements and (ii) the existence and extent of
                insurance coverage.

                         2.21.2  Except as set forth in  Schedule  2.21  hereof,
                there are no claims or Proceedings  pending or Threatened before

<PAGE>

                any  Governmental  Body or before any  arbitrator of any nature,
                brought by or against  VSI or Seller or any of their  respective
                officers, directors,  Employees, agents or affiliates involving,
                affecting or relating to any assets, properties or operations of
                VSI  or  Seller  or  the   transactions   contemplated  by  this
                Agreement,  nor does there exist any fact which might reasonably
                be expected to give rise to any such suit,  Proceeding,  dispute
                or investigation.

                         2.21.3   Neither  VSI  nor  Seller  nor  any  of  their
                respective  assets or  properties is subject to any Order of any
                Governmental  Body or  arbitrator,  which  adversely  affects or
                might reasonably be expected to affect their respective  assets,
                properties,   business  operation,   prospects,  net  income  or
                financial  condition  or  which  would or  might  reasonably  be
                expected to interfere with the transactions contemplated hereby.

                         2.21.4  Other than as  provided  in  Section  1.4(iii),
                Buyer is not assuming any  liabilities  or obligations of VSI or
                Seller set forth on Schedule 2.21.  Schedule 2.21 is provided to
                Buyer solely for informational  purposes.  Buyer does,  however,
                agree to cooperate,  at Seller's  expense,  with the  reasonable
                requests of Seller to make available certain witnesses and other
                evidence  during  the  pendency  of the  matters  set  forth  in
                Schedule 2.21.

                2.22 Accounts Receivable.  All trade accounts receivable of each
        of VSI and Seller  reflected in the Financial  Statements  and all trade
        accounts  receivable of each of VSI and Seller arising  between June 30,
        1998 and the Closing Date have arisen in the ordinary course of business
        and  represent  bona  fide,  undisputed   indebtedness  (subject  to  no
        counterclaim,  right of setoff or  warranty  claim other than as will be
        reserved   against  in  the  Closing  Balance  Sheet)  incurred  by  the
        applicable   account   debtor  for  goods  held   subject  to   delivery
        instructions  or shipped or delivered  pursuant to a contract of sale or
        for services  performed by VSI or Seller.

                2.23  Inventories and Supplies.  The inventories and supplies of
        each  of VSI  and  Seller  reflected  in the  Financial  Statements,  or
        acquired by VSI or Seller  between June 30,  1998,  and the date hereof,
        are carried at not in excess of the lower of cost or fair market  value,
        and do not include any inventory  which is not usable or saleable in the
        ordinary  course of business of VSI and Seller as heretofore  conducted,
        in each  case  net of  reserves  provided  therefor  in  such  Financial
        Statements in accordance with GAAP.

                2.24  Inventories and Supplies.  Except as set forth in Schedule
        2.24 hereof,

                         2.24.1 Each of VSI and Seller is in compliance with and
                neither is liable under any  Environmental  Law. Neither VSI nor
                Seller  has  received  any  Order  or  written  notice  from any


<PAGE>

                Governmental  Body or other Person  alleging any violation of or
                failure to comply with any  Environmental  Law, or any actual or
                Threatened  obligation  to  undertake  or bear  the  cost of any
                Environmental Liabilities with respect to any of the Facilities,
                or with respect to any property at, to, or from which  Hazardous
                Materials were generated,  manufactured,  refined,  transferred,
                imported,   used,  processed,   transported,   treated,  stored,
                handled, disposed, recycled, or received by VSI or Seller or any
                of their respective Employees.

                         2.24.2   There  are  no  Claims   resulting   from  any
                Environmental  Liabilities  that have been asserted with respect
                to or  affecting  any  of  the  Facilities  or  that  relate  to
                ownership or operation by VSI or Seller.

                         2.24.3 There are no Hazardous  Materials  present on or
                in the  Environment at the  Facilities,  including any Hazardous
                Materials  contained in barrels,  above or  underground  storage
                tanks,  landfills,  land  deposits,  dumps,  equipment  (whether
                moveable  or fixed) or other  containers,  either  temporary  or
                permanent,  and deposited or located in land,  water,  sumps, or
                any  other  part of the  Facilities,  or  incorporated  into any
                structure   therein  or  thereon   except  in  compliance   with
                Environmental  Laws and with regard to which no remedial  action
                would be required if brought to the attention of a  Governmental
                Body with jurisdiction.

                         2.24.4  Either  VSI or  Seller  has  delivered  or made
                available to Buyer true and  complete  copies and results of any
                reports,  studies,  analyses,  tests, or monitoring possessed by
                VSI or Seller  pertaining  to  Hazardous  Materials  in,  on, or
                under, or to Environmental issues relating to, the Facilities or
                Former Facilities.

                2.25  Customers and  Suppliers.  Except as set forth in Schedule
        2.25 hereof,

                         (i) neither VSI nor Seller has  received  notice  that,
                nor does VSI or Seller have any knowledge  that, any customer of
                VSI or Seller has, will or plans to  discontinue  doing business
                with VSI or Seller;

                         (ii)  neither  VSI  nor  Seller  has  any   outstanding
                purchase contracts or commitments or unaccepted  purchase orders
                which  are  in  excess  of  the  normal,   ordinary   and  usual
                requirements;

                         (iii) no supplier or subcontractor to VSI or Seller has
                reduced  its  shipments  of orders  issued by VSI or Seller,  or
                threatened to  discontinue,  supplying such items or services to
                VSI or Seller on reasonable terms; and

                         (iv) neither VSI nor Seller has  received  notice that,
                nor  does  VSI nor  Seller  have any  knowledge  that,  any such


<PAGE>

                supplier  or  subcontractor  has,  will or plans to  discontinue
                doing  business  with VSI or  Seller on  substantially  the same
                terms as are consistent with its past practices.

                2.26 No Brokers.  Neither  VSI nor Seller has  entered  into any
        contract, arrangement or understanding with any Person or firm which may
        result in the  obligation  of Buyer,  VSI or Seller to pay any  finder's
        fees,  brokerage  or  agent's  commissions  or other  like  payments  in
        connection  with  the  negotiations  leading  to this  Agreement  or the
        consummation of the transactions  contemplated  hereby,  and neither VSI
        nor  Seller is aware of any claim or basis for any claim for  payment of
        any  finder's  fees,  brokerage  or  agent's  commissions  or other like
        payments in connection with the  negotiations  leading to this Agreement
        or the consummation of the transactions contemplated hereby.

                2.27  Indemnities  and  Guaranties.  Neither  VSI nor Seller has
        indemnified or provided a guaranty to any Person except (i) as set forth
        and described in Schedule 1.3B hereof and (ii) to customers of either in
        the ordinary course of business.

                2.28 No  Misrepresentation  or Omission.  No  representation  or
        warranty by VSI or Seller in this  Section 2 or in any other  Section of
        this Agreement,  or in any certificate or other document furnished or to
        be furnished by VSI or Seller pursuant hereto,  contains or will contain
        any untrue statement of a material fact or omits or will omit to state a
        material fact  necessary to make the  statements  contained  therein not
        misleading or will omit to state a material  fact  necessary in order to
        provide Buyer with accurate information as to VSI and Seller.

                2.29   Survival   of   Representations   and   Warranties.   All
        representations and warranties by each of VSI and Seller in this Section
        2 or in any  other  Section  hereof,  or in  any  certificate  or  other
        document  furnished or to be furnished by VSI or Seller pursuant hereto,
        shall survive  delivery by Buyer of the  consideration to be given by it
        hereunder and delivery by each of VSI and Seller of the consideration to
        be given by each hereunder,  and shall survive the execution hereof, the
        Closing hereunder and the Closing Date; provided, however, that no claim
        based on any breach of any such warranty or any misrepresentation may be
        made by any Buyer Indemnitee  unless written notice with respect thereto
        is given on or before the third anniversary of the Closing Date.

                3.   Representations  and  Warranties  of  Buyer.  Buyer  hereby
        represents  and warrants to Seller and VSI as follows  (Buyer  reserving
        the  right to attach at the  Delivery  Date and  update at and as of the
        Closing Date Schedules in addition to those called for herein and to add
        references  thereto in the following  warranties and  representations as
        appropriate):


<PAGE>

                        3.1  Existence;  Good  Standing;   Corporate  Authority;
                Compliance   with  Law.   Buyer  (i)  is  a   corporation   duly
                incorporated,  validly  existing in good standing under the laws
                of its jurisdiction of  incorporation;  (ii) is duly licensed or
                qualified to do business as a foreign corporation and is in good
                standing under the laws of all other  jurisdictions in which the
                character of the properties  owned or leased by it therein or in
                which the  transaction of its business makes such  qualification
                necessary  except where the failure to be so qualified would not
                be  material;  (iii)  has  all  requisite  corporate  power  and
                authority to own its properties and carry on its business as now
                conducted;  (iv) is not in material  default with respect to any
                Order of any  Governmental  Body or  arbitration  board to which
                Buyer is a party or is subject; (v) is not in material violation
                of any laws,  ordinances,  governmental  rules or regulations to
                which  it  is  subject;  and  (vi)  has  obtained  all  material
                licenses,  permits  and other  authorizations  and has taken all
                actions required by applicable laws or governmental  regulations
                in connection with its business as now conducted.

                3.2      Authorization, Validity and Effect of Agreements.

                         3.2.1 The execution and delivery of this  Agreement and
                all agreements and documents  contemplated  hereby by Buyer, and
                the consummation by it of the transactions  contemplated hereby,
                have been duly authorized by all requisite corporate action.

                         3.2.2 This  Agreement  constitutes,  and all agreements
                and  documents  contemplated  hereby when executed and delivered
                pursuant  hereto for value received will  constitute,  the valid
                and  legally  binding   obligations  of  Buyer   enforceable  in
                accordance with their terms,  except that  enforceability may be
                limited by applicable  bankruptcy,  insolvency,  reorganization,
                fraudulent  transfer,   moratorium,   bulk  sales,   preference,
                equitable  subordination,  marshalling  or other similar laws of
                general  application  now or hereafter in effect relating to the
                enforcement of creditors'  rights  generally and except that the
                remedies of specific performance,  injunction and other forms of
                equitable   relief  are  subject  to  certain  tests  of  equity
                jurisdiction, equitable defenses and the discretion of the court
                before which any proceeding therefor may be brought.

                         3.2.3 The execution  and delivery of this  Agreement by
                Buyer  does  not,  and  the  consummation  of  the  transactions
                contemplated  hereby  will  not,  (i)  except  as set  forth  on
                Schedule   3.2  hereof,   require  the   consent,   approval  or
                authorization of, or declaration,  filing or registration  with,
                any  Governmental  Body or any Third  Party,  (ii) result in the
                breach  of any term or  provision  of, or  constitute  a default
                under, or result in the  acceleration of or entitle any party to
                accelerate  (whether  after the giving of notice or the lapse of
                time or both) any obligation under, or result in the creation or
                imposition of any  Encumbrance  upon any part of the property of
                Buyer  pursuant  to any  provision  of,  any  Order,  indenture,
                mortgage, lease, license, lien, or other agreement or instrument
                to which  Buyer is a party or by which it is  bound,  and  (iii)
                violate  or  conflict  with  any  provision  of  the  bylaws  or
                Certificate  of  Incorporation  of Buyer as  amended to the date
                hereof.
<PAGE>

                3.3   Survival   of   Representations   and   Warranties.    All
        representations  and  warranties  by Buyer in this  Section  3 or in any
        other Section hereof, or in any certificate or other document  furnished
        or to be furnished by Buyer pursuant  hereto,  shall survive delivery by
        Buyer of the  consideration  to be given by it hereunder and delivery by
        each  of VSI  and  Seller  of the  consideration  to be  given  by  each
        hereunder, and shall survive the execution hereof, the Closing hereunder
        and the Closing Date; provided,  however,  that, other than as set forth
        in Section 4.2 hereof, no claim based on any breach of any such warranty
        or any  misrepresentation  may be made by VSI or Seller  unless  written
        notice with respect thereto is given on or before the third  anniversary
        of the Closing Date.

        4.      Indemnification

                4.1 Indemnification by Seller and VIS. Subject to the provisions
        of Section  5.15 below and upon the terms and subject to the  conditions
        set forth in Sections 4.3 and 4.5 hereof and this  Section  4.1,  Seller
        and VSI,  jointly and severally,  agree to indemnify,  defend,  protect,
        save and hold harmless the Buyer  Indemnitees (or any Buyer  Indemnitee)
        against,  and  will  reimburse  the  Buyer  Indemnitees  (or  any  Buyer
        Indemnitee)  for,  any and all Losses  made or  incurred  by or asserted
        against the Buyer  Indemnitees  (or any Buyer  Indemnitee),  at any time
        after the Closing Date, directly or indirectly,  arising out of, related
        to,  caused by, or  resulting  from any of the  following  (in each case
        regardless of by whom asserted):

                         4.1.1 any and all  liabilities or obligations of Seller
                or VSI or claims against or imposed on the Buyer Indemnitees (or
                any  Buyer  Indemnitee),  of  any  nature,  including,   without
                limitation, those relating to the respective business activities
                of  Seller  or  VSI  or to  conditions  existing  on  any of the
                Facilities prior to the Closing Date (whether accrued, absolute,
                contingent  or  otherwise  and  whether  a   contractual,   tax,
                statutory or other type of  liability,  obligation or claim) not
                specifically   assumed  by  Buyer  pursuant  hereto  (including,
                without  limitation,  those liabilities or obligations of VSI or
                Seller specifically referred to in Section 1.4 hereof);

                         4.1.2  any  inaccuracy,  omission,   misrepresentation,
                breach of warranty or  representation,  or nonfulfillment of any
                term, provision,  covenant or agreement on the part of Seller or
                VSI contained herein, or any inaccuracy or misrepresentation in,
                or omission from, any certificate or other instrument  furnished
                or to be furnished by Seller or VSI to Buyer pursuant hereto;

                         4.1.3 Seller's or VSI's failure to comply with any bulk
                transfer  provisions  which  may be in  effect  in the  state or
                states in which the Assets are located;


<PAGE>

                         4.1.4 (i) any  Breach by Seller or VSI of  Seller's  or
                VSI's   environmental   representation  and  warranty  contained
                herein;  (this indemnity is intended to allocate  responsibility
                between VSI, Seller and Buyer and any other Indemnified Party as
                contemplated by Section 107(e)(1) of CERCLA or similar law);

                         4.1.5  any  and  all  items  listed  on  the  Schedules
                delivered  subsequent  to the Closing,  objected to by Buyer and
                determined  in  accordance  with  Section  5.15 hereof not to be
                items assumed by Buyer pursuant hereto.

                As used herein,  the term "Losses"  shall mean,  with respect to
        any Person or party, any payment,  loss, liability,  obligation,  damage
        (including,  without  limitation,  consequential,  punitive,  special or
        otherwise),  deficiency,  lien, claim, suit, cause of action,  judgment,
        cost or expense (including,  without limitation,  reasonable  attorneys'
        fees and  court  costs  and  costs  of  cleanup,  containment,  or other
        remediation of the Environment) of any kind, nature or description.

                As used herein,  the term "Buyer  Indemnitees"  shall mean Buyer
        and any affiliate of Buyer;

                As used herein, the term "affiliate" shall mean, with respect to
        any Person or party, (i) any Person or party controlling,  controlled by
        or  under  common  control  with any  such  Person  or party or (ii) any
        director  or  executive  officer  of any such  Person or party or of any
        Person or party  referred  to in clause (i) of this  paragraph.  As used
        herein,  the term  "control"  shall  mean the  possession,  directly  or
        indirectly,  of the  power to  direct  or  cause  the  direction  of the
        management  and  policies  of a Person or  party,  whether  through  the
        ownership  of voting  securities  or voting  interests,  by  contract or
        otherwise.

                Notwithstanding  anything to the contrary  contained herein, the
        parties agree that any Buyer  Indemnitee's sole remedy for any claim for
        damages  (excluding  equitable  remedies and those resulting from fraud)
        arising  under this  Agreement  (including  the  Schedules) or any other
        agreement  between  Buyer and VSI or Seller  entered into in  connection
        herewith   (including   any  claim  based  upon   Seller's   warranties,
        representations  and covenants contained herein) shall be limited to the
        remedies  provided in the  indemnification  provisions of this Section 4
        and the Escrow Agreement.  Further,  Buyer waives all other statutory or
        common  law  rights to  recover  against  VSI or Seller  for any  matter
        relating to Environmental  Contamination,  Environmental  Liabilities or
        Hazardous  Materials.  There  shall  be no limit  on  Seller's  or VSI's
        obligation to indemnify and hold harmless any Buyer  Indemnitee  from or
        against Losses resulting from fraud.

                4.2  Indemnification by Buyer. Upon the terms and subject to the
        conditions  set forth in Section 4.3 hereof and this Section 4.2,  Buyer
        agrees to indemnify,  defend, protect, save and hold harmless Seller and
<PAGE>

        VSI against,  and will  reimburse  Seller and VSI on demand for, any and
        all Losses made or incurred by or asserted  against Seller,  at any time
        after the Closing Date, directly or indirectly,  arising out of, related
        to,  caused  by,  or  resulting  from  (i)  any  inaccuracy,   omission,
        misrepresentation,  breach of warranty,  or  nonfulfillment of any term,
        provision,  covenant or agreement on the part of Buyer contained herein,
        (ii) any  inaccuracy  or  misrepresentation  in, or omission  from,  any
        certificate or other instrument furnished or to be furnished by Buyer to
        Seller  pursuant  hereto or (iii)  operation of business  activities  of
        Buyer  after the  Closing  Date  involving  the  Assets.  Within 45 days
        following the first anniversary of the Closing Date, Buyer shall deliver
        to VSI and  Seller  a  certificate  of Buyer  certifying  which of those
        liabilities and obligations of Buyer assumed from VSI or Seller pursuant
        to this  Agreement and listed on Schedule 1.3A or Schedule 1.3B (each as
        updated to Closing)  had become due and payable but had not been paid in
        full or resolved as of the first  anniversary of the Closing Date.  With
        respect to the liabilities and  obligations  listed in such  certificate
        (or which  were  erroneously  omitted  from such  certificate),  Buyer's
        obligations  pursuant  to this  Section  4.2  shall  terminate  upon the
        payment or resolution of such liability or  obligation.  With respect to
        those  liabilities  and  obligations of Buyer assumed from VSI or Seller
        pursuant to this  Agreement and listed on Schedule 1.3A or Schedule 1.3B
        (each as updated to Closing) which by their  respective  terms in effect
        at Closing will become due and payable later than the first  anniversary
        of the Closing Date,  Buyer's  obligations  pursuant to this Section 4.2
        shall  terminate  upon the payment or  resolution  of such  liability or
        obligation.  In the  event  the  certificate  is not  timely  delivered,
        Buyer's obligation pursuant to this Section 4.2 shall terminate upon the
        payment or resolution  of all  liabilities  assumed  pursuant to Section
        1.3.  With respect to all other  liabilities  and  obligations  of Buyer
        assumed  from  VSI  or  Seller  pursuant  to  this  Agreement,   Buyer's
        obligations  pursuant to this Section 4.2 shall terminate upon the third
        anniversary  of the  Closing  Date.  There  shall be no limit on Buyer's
        obligation to indemnify and hold harmless Seller and VSI from or against
        Losses resulting from fraud.

                4.3 Conditions of Indemnification. With respect to any actual or
        potential claim, any written demand,  the commencement of any action, or
        the  occurrence of any other event which  involves any matter or related
        series  of  matters  (a  "Claim")   against  which  a  party  hereto  is
        indemnified   (the   "Indemnified   Party")  by  any  other  party  (the
        "Indemnifying Party") under Section 4.1 or 4.2 hereof:

                         4.3.1  Promptly  after  the  Indemnified   Party  first
                receives written  documents  pertaining to the Claim, or if such
                Claim  does not  involve a Third  Party  Claim (a  "Third  Party
                Claim"),  promptly after the Indemnified  Party first has actual
                knowledge of such Claim, the Indemnified Party shall give notice
                to the Indemnifying Party of such Claim in reasonable detail and
                stating the amount involved,  if known,  together with copies of
                any such written documents.


<PAGE>

                         4.3.2  The  obligation  of the  Indemnifying  Party  to
                indemnify the Indemnified  Party with respect to any Claim shall
                not be affected by the failure of the Indemnified  Party to give
                the notice with respect thereto in accordance with Section 4.3.1
                hereof unless the Indemnifying Party shall establish that it has
                been materially prejudiced thereby.

                         4.3.3 If the Claim  involves a Third Party Claim,  then
                the  Indemnifying  Party  shall,  at its sole cost,  expense and
                ultimate  liability  regardless  of  the  outcome,  and  through
                counsel  of  its  choice  (which  counsel  shall  be  reasonably
                satisfactory to the Indemnified Party), litigate, defend, settle
                or  otherwise   attempt  to  resolve  such  Third  Party  Claim;
                provided, however, that if in the Indemnified Party's reasonable
                judgment a conflict  of interest  may exist with  respect to the
                Third Party Claim,  then the Indemnified Party shall be entitled
                to select counsel of its own choosing,  reasonably  satisfactory
                to the Indemnifying Party, in which event the Indemnifying Party
                shall be obligated to pay the fees and expenses of such counsel.
                Notwithstanding  the preceding  sentence,  the Indemnified Party
                may elect, at any time and at the Indemnified Party's sole cost,
                expense and ultimate  liability,  regardless  of the outcome (in
                the case of reasons other than the Indemnifying  Party's failure
                or refusal to provide a defense to such Third Party Claim),  and
                through counsel of its choice,  to litigate,  defend,  settle or
                otherwise  attempt to resolve  such Third  Party  Claim.  If the
                Indemnified   Party  so  elects  (for  reasons  other  than  the
                Indemnifying  Party's failure or refusal to provide a defense to
                such Third Party Claim),  then the Indemnifying Party shall have
                no obligation to indemnify the Indemnified Party with respect to
                such Third Party  Claim,  but such  disposition  will be without
                prejudice to any other right the  Indemnified  Party may have to
                indemnification  under Section 4.1 or 4.2 hereof,  regardless of
                the outcome of such Third Party Claim. If the Indemnifying Party
                fails or refuses to provide a defense to any Third Party  Claim,
                then the Indemnified Party shall have the right to undertake the
                defense,  compromise  or  settlement  of such Third Party Claim,
                through counsel of its choice,  on behalf of and for the account
                and at the risk of the Indemnifying  Party, and the Indemnifying
                Party  shall  be  obligated  to  pay  the  costs,  expenses  and
                attorney's fees incurred by the Indemnified  Party in connection
                with such Third Party Claim. In any event,  Seller and the Buyer
                Indemnitees  shall  fully  cooperate  with each  other and their
                respective  counsel  in  connection  with any  such  litigation,
                defense, settlement or other attempted resolution.

                4.4      Monetary Limits of Indemnification

                         4.4.1  Notwithstanding  the  provisions  of Section 4.1
                hereof,  Seller and VSI will not be  obligated  to  indemnify or
                hold  harmless  any  Buyer  Indemnitee  from or  against  Losses
<PAGE>

                arising out of or resulting  from  matters  described in Section
                4.1, (other than Losses  directly or indirectly  arising out of,
                related  to,  caused  by,  or  resulting  from  any  inaccuracy,
                omission  or  misrepresentation   contained  in,  or  breach  of
                warranty or representation respecting,  Section 2.22), until the
                amount of such Losses  individually  or in the aggregate  exceed
                the amount of $200,000 (the "Floor Amount"), it being understood
                and agreed  that the Floor  Amount  shall be deemed to have been
                reached as to each of VSI and Seller when Buyer's  Losses exceed
                the amount of $200,000.  Upon reaching the Floor Amount,  Seller
                and VSI shall be  required to  indemnify  the  applicable  Buyer
                Indemnitee for Losses comprising the Floor Amount as well as all
                Losses  occurring  thereafter only from the Escrow Fund and only
                up to (except in the cases of Losses  resulting  from  fraud) an
                aggregate  amount  equal to the amount of the  Escrow  Fund then
                outstanding (the "Seller's Ceiling Amount"). Seller and VSI will
                be obligated to indemnify and hold harmless any Buyer Indemnitee
                from or against  Losses  directly or indirectly  arising out of,
                related  to,  caused  by,  or  resulting  from  any  inaccuracy,
                omission  or  misrepresentation   contained  in,  or  breach  of
                warranty or  representation  respecting,  Section 2.22 up to the
                Seller's  Ceiling  Amount  without  regard to the Floor  Amount.
                Seller and VSI will be obligated to indemnify  and hold harmless
                any  Buyer   Indemnitee  from  or  against  Losses  directly  or
                indirectly  arising out of,  related to, caused by, or resulting
                from any inaccuracy, omission or misrepresentation contained in,
                or breach of warranty  or  representation  respecting,  Sections
                2.12.2  or  2.20  without  regard  to the  materiality  of  such
                inaccuracy, omission,  misrepresentation,  or breach of warranty
                or representation. Notwithstanding the provisions of Section 4.1
                hereof and except in the cases of Losses  resulting  from fraud,
                Seller  and VSI  will  not be  obligated  to  indemnify  or hold
                harmless  any Buyer  Indemnitee  from or  against  Losses to the
                extent such Losses are in excess of the Seller's Ceiling Amount.
                There shall be no monetary limit on Seller's or VSI's obligation
                to  indemnify  and hold  harmless any Buyer  Indemnitee  from or
                against Losses resulting from fraud.

                         4.4.2  Notwithstanding  the  provisions  of Section 4.2
                hereof,  Buyer  will  not be  obligated  to  indemnify  or  hold
                harmless  Seller or VSI from or against Losses arising out of or
                resulting  from matters  described  in Section 4.2,  (other than
                Losses directly or indirectly arising out of, related to, caused
                by, or resulting from any  nonfulfillment of any covenant on the
                part of Buyer contained in Section 1.3 hereof or any certificate
                related thereto),  until the amount of such Losses  individually
                or in the aggregate  exceed the Floor Amount.  Upon reaching the
                Floor  Amount,  Buyer shall be required to indemnify  Seller and
                VSI for Losses comprising the Floor Amount as well as all Losses
                occurring  thereafter  only up to (except in the cases of Losses
<PAGE>

                resulting  from fraud) an aggregate  amount equal to $12,000,000
                (the  "Buyer's  Ceiling  Amount").  Buyer will be  obligated  to
                indemnify  and hold  harmless  Seller  and VSI  from or  against
                Losses directly or indirectly arising out of, related to, caused
                by, or resulting from any  nonfulfillment of any covenant on the
                part of Buyer  contained in Section 1.3 hereof up to the Buyer's
                Ceiling   Amount   without   regard   to   the   Floor   Amount.
                Notwithstanding  the provisions of Section 4.2 hereof and except
                in the cases of Losses  resulting from fraud,  Buyer will not be
                obligated to indemnify  or hold  harmless  Seller or VSI from or
                against  Losses to the extent  such  Losses are in excess of the
                Buyer's  Ceiling  Amount.  There shall be no  monetary  limit on
                Buyer's  obligation to indemnify and hold harmless Seller or VSI
                from or against Losses resulting from fraud.

 .               4.5      Environmental Remediation

                         4.5.1.  The term  "Environmental  Contamination"  shall
                mean  the  presence  of  Hazardous   Materials  at  any  of  the
                Facilities.  Environmental  Contamination  is indemnifiable as a
                Loss under Section 4.1 hereof if it has resulted in the issuance
                of  a  final  Order  or  legally  enforceable   directive  by  a
                Governmental  Body or if it  triggers a Legal  Requirement  that
                imposes  an  obligation  to act,  or, for  Facilities  on leased
                property,  when  brought to the  attention  of the landlord as a
                result of a legal  requirement or a requirement  under the lease
                to so  notify,  results in a legally  enforceable  demand by the
                landlord for remediation.

                         4.5.2 The  addressing of  Environmental  Contamination,
                (whether   by   assessment,   negotiation,    compromise,   risk
                assessment,  cleanup  or  otherwise)  (hereafter  "Environmental
                Remediation")  identified  by the  Environmental  Due  Diligence
                Review shall be  performed by VSI and Seller,  to the extent the
                cost of the Environmental Remediation of such contamination does
                not exceed the funds  available in the Escrow Fund.  If and when
                funds from the Escrow fund are  exhausted,  VSI and Seller shall
                have no obligation to perform any  Environmental  Remediation or
                otherwise   address   any   Environmental   Contamination.   The
                remediation of Environmental  Contamination identified after the
                Closing  shall be the  responsibility  of Buyer unless Buyer can
                establish  that such  contamination  arose prior to the Closing.
                Buyer  acknowledges that VSI and Seller shall have no obligation
                to  perform   Environmental   Remediation  unless  Environmental
                Contamination  is discovered  (i) during the  Environmental  Due
                Diligence review set forth in Section 5.5.2; or (ii) by, or as a
                result of a third party claim or demand; or (iii) due to a Legal
                Requirement under any  Environmental  Law.  Notwithstanding  any
                other  provision  of this Section  4.5.2,  if, after the Closing
                Date,   Buyer  is  informed  of,  or   inadvertently   discovers
                Environmental  Contamination that does not require the giving of
                notice to either a Governmental Body or to the landlord pursuant
                to the applicable lease,  Buyer shall give notice of same to VSI
                and  Seller  and  VSI and  Seller  shall  perform  Environmental
                Remediation to the standards set forth in Section 4.5.4.


<PAGE>

                         4.5.3  Seller and VSI have the right to  undertake  any
                Environmental Remediation for which they are responsible subject
                to reasonable  agreement of Buyer and VSI  regarding  access to,
                and   non-interference   with   activities   of  Buyer  on,  the
                Facilities.  Seller and VSI shall be entitled to receive monthly
                reimbursement  from  the  Escrow  Fund  for  the  costs  of that
                Environmental Remediation to the extent funds are available.

                         4.5.4 The extent to which  Environmental  Contamination
                must be  remediated,  if at all,  shall be to the highest levels
                allowed  by  law  that  do  not   require  the   imposition   of
                institutional  controls  unless those  controls would not impair
                the  value,  or  interfere  with  the  reasonable  use,  of  the
                property,  and,  if  the  Facility  is on  leased  property,  to
                whatever level the landlord ultimately agrees; provided however,
                institutional  controls  that impair value may be allowed if VSI
                or Seller pays Buyer for the diminution in value attributable to
                that impairment.

        5.      Other Covenants and Agreements

                5.1  Guaranty of  Receivables.  At the  Closing,  Seller and VSI
        shall  execute  and deliver to Buyer a Guaranty in the form set forth as
        Exhibit  "B" hereto  (the  "Receivables  Guaranty"),  under the terms of
        which  Seller and VSI,  jointly  and  severally,  shall  unconditionally
        guarantee that all indebtedness  represented by the accounts  receivable
        of VSI and Seller as of the Closing  Date (less the reserve for doubtful
        accounts not to exceed an  aggregate  of  $125,000)  will be received by
        Buyer.  Within 160 days following the Closing Date,  Buyer shall prepare
        and  deliver  to VSI and Seller an  accounting  of  collections  on such
        receivables on or before 150 days following the Closing Date,  certified
        as true and  correct by the Chief  Financial  Officer  of Buyer.  In the
        event such net  indebtedness  is not  received by Buyer on or before 150
        days after the Closing  Date,  VSI and Seller  shall within ten business
        days following  receipt from Buyer of such  accounting  giving notice to
        such effect  cause the Escrow Agent to make payment from the Escrow Fund
        to Buyer of an amount in cash equal to the  difference  between such net
        indebtedness  and  the  amount  received  by  Buyer  for  such  accounts
        receivable,  whereupon  Buyer  shall  promptly  assign  or  cause  to be
        assigned  to VSI or Seller  all  rights,  claims,  actions  or causes of
        action which Buyer may have relating to such unpaid receivables.  In the
        event that the amount  received  by Buyer for such  accounts  receivable
        shall be in excess of such net  indebtedness,  the amount of such excess
        will be paid by Buyer to VSI  (from  Buyer's  own funds and not from the
        Escrow Fund)  within such ten  business day period.  During the 150 days
        following the Closing  Date,  Buyer shall use  reasonable  and customary
        efforts to collect  such  receivables  (but  shall not be  obligated  to
        initiate  litigation)  and any  amounts  received by Buyer in respect of
        such  accounts  receivable  shall be applied  first to the  oldest  such
        account  receivable of the respective  account debtor unless the account
        debtor  specifically  directs otherwise in writing without any direction
        from Buyer.


<PAGE>

                5.2      Restrictive Covenants

                         5.2.1  Customer  Restriction.  Each of  Seller  and VSI
                covenants  and agrees  that it shall  not,  for a period of five
                years  from and  after the  Closing  Date,  working  alone or in
                conjunction  with one or more  other  Persons or  entities,  for
                compensation  or not,  (i)  provide  or offer to  provide to any
                Customer  (as such term is  hereinafter  defined) any product or
                service  the same or  similar  to that  offered by VSI or Seller
                prior to the  Closing,  or (ii)  induce or attempt to induce any
                Customer to withdraw,  curtail or cancel its business with Buyer
                or in any  manner  modify  or fail to enter  into any  actual or
                potential business  relationship with Buyer. As used herein, the
                term  "Customer"  means any  Person  or  entity  for whom VSI or
                Seller  provided  services on or prior to the Closing Date or to
                whom VSI or Seller provided a product on or prior to the Closing
                Date.

                         5.2.2  Non-Raid.  Each  Seller  and VSI  covenants  and
                agrees  that it shall  not,  for a period of five years from and
                after the Closing Date, working alone or in conjunction with one
                or more other Persons or entities,  for compensation or not, (i)
                recruit or otherwise  solicit or induce any Person or entity who
                is, on the Closing Date or thereafter,  an employee or vendor of
                VSI or Seller to terminate their  employment  with, or otherwise
                cease their  relationship with, Buyer or any of its subsidiaries
                or affiliates,  or (ii) hire,  recruit or otherwise  solicit any
                Person  or  entity  who,  within  the  six  months   immediately
                preceding  the Closing  Date,  had been an employee or vendor of
                VSI or Seller.

                         5.2.3 Noncompetition.  Each of Seller and VSI covenants
                and agrees  that it shall  not,  for a period of five years from
                and after the Closing Date, working alone or in conjunction with
                one or more other Persons or entities,  for compensation or not,
                permit  VSI's or  Seller's  name to be used by or  engage  in or
                carry on,  directly  or  indirectly,  either  for itself or as a
                member of a partnership  or as a stockholder,  investor,  agent,
                associate  or   consultant   of  any  Person,   partnership   or
                corporation  (other than Buyer or a  subsidiary  or affiliate of
                Buyer), any business in competition with the business as carried
                on by VSI or Seller on the Closing Date, but only for as long as
                such like business is carried on by (i) Buyer or any  subsidiary
                or  affiliate  of  Buyer,  or  (ii)  any  Person,   corporation,
                partnership,  trust or other  organization  or  entity  deriving
                title  from Buyer to the assets  and  goodwill  of the  business
                being  carried on by VSI or Seller on the Closing  Date,  in any
                county in any state of the United  States in which  Buyer or any
                subsidiary or affiliate of Buyer  conducts  business,  or in any
                other  county  in any  state  of the  United  States,  or in any
                country  or  political  subdivision  of the world.  The  parties
                intend that the covenants  contained in this Section 5.2.3 shall
                be  deemed to be a series of  separate  covenants,  one for each
                county in each state of the United  States and for each  country


<PAGE>

                and  political   subdivision  of  the  world  and,   except  for
                geographic  coverage,  each  such  separate  covenant  shall  be
                identical  in terms to the  covenant  contained  in this Section
                5.2.3.

                         5.2.4 Tolling.  The term of the covenants  contained in
                Section  5.2.1,  5.2.2 or 5.2.3  hereof  shall be tolled for the
                period commencing on the date any successful action is filed for
                injunctive  relief or damages  arising out of a breach by VSI or
                Seller of Section  5.2.1,  5.2.2 or 5.2.3 hereof and ending upon
                final adjudication (including appeals) of such action.

                         5.2.5 Reformation.  If, in any judicial proceeding, the
                court  shall  refuse to enforce  all of the  separate  covenants
                contained in Section  5.2.1,  5.2.2 or 5.2.3 hereof  because the
                time limit is too long,  it is expressly  understood  and agreed
                between the parties hereto that for purposes of such  proceeding
                such time  limitation  shall be  deemed  reduced  to the  extent
                necessary to permit  enforcement of such  covenants.  If, in any
                judicial  proceeding,  the court shall  refuse to enforce all of
                the  separate  covenants  contained in Section  5.2.1,  5.2.2 or
                5.2.3  hereof  because  it  is  more  extensive  (whether  as to
                geographic  area, scope of business or otherwise) than necessary
                to protect the business  and goodwill of Buyer,  it is expressly
                understood  and  agreed  between  the  parties  hereto  that for
                purposes  of such  proceeding  the  geographic  area,  scope  of
                business or other aspect  shall be deemed  reduced to the extent
                necessary to permit enforcement of such covenants.

                         5.2.6  Injunctive  Relief.   Each  of  VSI  and  Seller
                acknowledges  that a breach  of  Section  5.2.1,  5.2.2 or 5.2.3
                hereof would cause irreparable damage to Buyer, and in the event
                of its actual or threatened  breach of the provisions of Section
                5.2.1,  5.2.2 or 5.2.3  hereof,  Buyer  shall be  entitled  to a
                temporary  restraining order and an injunction  restraining each
                of VSI and Seller  from  breaching  such  covenants  without the
                necessity  of posting  bond or proving  irreparable  harm,  such
                being conclusively admitted by VSI and Seller.  Nothing shall be
                construed as prohibiting Buyer from pursuing any other available
                remedies for such breach or  threatened  breach,  including  the
                recovery of damages from each of VSI and Seller. Each of VSI and
                Seller  acknowledges that the restrictions set forth in Sections
                5.2.1,  5.2.2  and  5.2.3  hereof  are  reasonable  in scope and
                duration, given the nature of the business of Buyer.

                         5.2.7  Use of  Name.  Each  of  Seller  and  VSI  shall
                discontinue all use of the name "Valley Systems" and any and all
                derivations thereof within 30 days after the Closing Date (other
                than in  respect of the name of VSI's  401(k)  plan prior to its
                termination).
<PAGE>

                          5.2.8 No  Dissolution.  Neither  VSI nor Seller  shall
                 dissolve  until  the  entire  Escrow  Fund  has  been  released
                 pursuant to Section 5.3 hereof.

                5.3      Escrow

                         5.3.1 The Escrow Fund shall be the exclusive  source of
                recovery   in   respect   of  each   of   VSI's   and   Seller's
                indemnification  obligations  pursuant  to  Section  4 hereof or
                otherwise arising under this Agreement  (including the Schedules
                hereto) or any other  agreement  between Buyer and VSI or Seller
                entered into in connection  herewith,  including any claim based
                upon each of VSI's and Seller's warranties,  representations and
                covenants  contained herein including those contained in Section
                5.1 hereof. The Escrow Fund shall be held and distributed,  with
                interest, by Bank One Texas, N.A. (the "Escrow Agent"), pursuant
                to an  Escrow  Agreement  in the form set forth as  Exhibit  "C"
                hereto (the  "Escrow  Agreement"),  which shall be executed  and
                delivered by VSI, Seller and Buyer at the Closing.

                         5.3.2  Buyer  shall be  entitled  to  receive  from the
                Escrow Fund a payment equal to the amount,  if any, provided for
                in Section 5.1 hereof without regard to the Floor Amount.

                         5.3.3  Subject  to  Sections  4.5.2 and  5.3.6  hereof,
                Seller and VSI shall be entitled to receive from the Escrow Fund
                the costs of  Environmental  Remediation  at all  Facilities not
                excluded  by Buyer from the  Assets  pursuant  to Section  5.5.2
                hereof and in accordance with the terms of the Escrow Agreement.

                         5.3.4 In the event  that any Buyer  Indemnitee  has any
                claim for  damages  based  upon VSI's and  Seller's  warranties,
                representations  and  covenants  contained  herein or  otherwise
                arising  hereunder or any other agreement  between Buyer and VSI
                or Seller entered into in connection  herewith (other than VSI's
                and Seller's obligations under Section 5.1 hereof),  Buyer shall
                give written  notice of same to VSI and Seller and shall forward
                a copy of such notice to the Escrow Agent.  If VSI or Seller has
                not   corrected  or  remedied   such  failure  of   performance,
                representation,  warranty or covenant  within 30 days  following
                receipt of such notice, then VSI and Seller acknowledge, subject
                to the  provisions  of Section 5.15 hereof,  that Buyer shall be
                entitled to receive from the Escrow Fund, in accordance with the
                terms of the Escrow  Agreement,  the  amount of  indemnification
                that Buyer is due pursuant to this Agreement.

                         5.3.5  Provided  no dispute or disputes in excess of an
                aggregate  of  $3,000,000  (or  $2,000,000,  if that part of the
                Escrow Fund subject to Section 5.3.6 hereof has been released to
                VSI or Seller), less the amount of any payments theretofore made
<PAGE>

                in  satisfaction  of  Seller's  or  VSI's   indemnification  and
                guaranty obligations hereunder,  exist as to any Claim or Claims
                by any Buyer  Indemnitee  against all or a portion of the Escrow
                Fund  on  the  first  anniversary  of  the  Closing  Date,  then
                $1,000,000,  less the amount of any payments in  satisfaction of
                VSI's  or  Seller's  indemnification  and  guaranty  obligations
                hereunder,  will  be  released  to  Seller  or VSI on the  first
                business day  following  such first  anniversary  of the Closing
                Date.  To the extent such a dispute or disputes do exist as to a
                Claim or Claims on the first anniversary of the Closing Date, an
                amount  equal to the  amount  of such  Claim or  Claims  will be
                withheld  from such partial  release of the Escrow Fund and will
                continue to be held in  accordance  with the  provisions  of the
                Escrow  Agreement  until  such  Claim or Claims  have been fully
                resolved.  Provided  no  dispute  or  disputes  in  excess of an
                aggregate  of  $2,000,000  (or  $1,000,000,  if that part of the
                Escrow Fund subject to Section 5.3.6 hereof has been released to
                VSI or Seller), less the amount of any payments theretofore made
                in  satisfaction  of  Seller's  or  VSI's   indemnification  and
                guaranty obligations hereunder,  exist as to any Claim or Claims
                by any Buyer  Indemnitee  against all or a portion of the Escrow
                Fund on the second  anniversary  of the  Closing  Date,  then an
                additional   $1,000,000,   less  the  amount  of  any   payments
                theretofore   made  in   satisfaction   of  VSI's  or   Seller's
                indemnification  and  guaranty  obligations  hereunder,  will be
                released to Seller or VSI on the first  business  day  following
                such second  anniversary of the Closing Date. To the extent such
                a dispute  or  disputes  do exist as to a Claim or Claims on the
                second  anniversary  of the Closing Date, an amount equal to the
                amount  of such  Claim or  Claims  will be  withheld  from  such
                partial  release of the Escrow Fund and will continue to be held
                in accordance with the provisions of the Escrow  Agreement until
                such  Claim or Claims  have been  fully  resolved.  Provided  no
                dispute or disputes exist as to any Claim or Claims by any Buyer
                Indemnitee  against  all or a portion of the Escrow  Fund on the
                third anniversary of the Closing Date, then the remainder of the
                Escrow  Fund  will be  released  to  Seller  or VSI on the first
                business day  following  such third  anniversary  of the Closing
                Date and the Escrow Agreement shall thereupon terminate.  To the
                extent a dispute or disputes do exist as to a Claim or Claims on
                the third  anniversary  of the Closing  Date, an amount equal to
                the amount of such Claim or Claims  will be  withheld  from such
                release  of the  Escrow  Fund  and will  continue  to be held in
                accordance  with the  provisions of the Escrow  Agreement  until
                such Claim or Claims  have been  fully  resolved.  Seller's  and
                VSI's  obligations  hereunder  shall  not  be  affected  by  any
                termination of the Escrow Agreement.

                         5.3.6 On or before the first anniversary of the Closing
                Date,  VSI shall  certify in writing to Buyer that VSI or Seller
                or both have  completed  the  Environmental  Remediation  of the
                Environmental  Contamination identified by the Environmental Due


<PAGE>

                Diligence  Review as required by the terms of Section 4.5 hereof
                as to all  Facilities  not excluded by Buyer pursuant to Section
                5.5.2  hereof  as  well  as  any   Environmental   Contamination
                identified  during the  Environmental  Remediation  (or,  in the
                event that such  Environmental  Remediation  is not completed at
                the first  anniversary  of the Closing Date, VSI shall deliver a
                certificate of the environmental engineering and consulting firm
                which is effecting such Environmental Remediation estimating the
                additional  time required for such completion and the additional
                cost thereof  ("Estimated  Additional  Remediation  Cost"). Upon
                delivery to Buyer of VSI's  certificate  or the  certificate  of
                such firm,  as the case may be, an amount  equal to  $1,000,000,
                less  the sum of (i) the  aggregate  cost of such  Environmental
                Remediation  (including  the  Estimated  Additional  Remediation
                Cost) and (ii) the aggregate amount of other Losses of all other
                Buyer Indemnitees subject to indemnification pursuant to Section
                4.1 hereof in excess of $3,000,000,  shall forthwith be released
                to VSI and Seller out of the Escrow Fund. In the event that such
                Environmental   Remediation  was  not  completed  at  the  first
                anniversary  of the Closing  Date,  VSI shall deliver to Buyer a
                certificate   of   completion   thereof  upon  such   completion
                containing   a   statement   of  the   aggregate   cost  of  the
                Environmental   Remediation   effected   following   such  first
                anniversary,  and Buyer shall  immediately  release to Seller or
                VSI out of the Escrow Fund the amount,  if any, which would have
                been  released  to  Seller  or  VSI  under  this  Section  5.3.6
                following such first  anniversary  had such actual cost,  rather
                than the Estimated  Additional  Remediation  Cost,  been used in
                such calculation.

                5.4      Conduct of the Business.

                         5.4.1  Affirmative  Covenants.  On and  after  the date
                hereof and until the Closing Date or the date,  if any, on which
                this Agreement is earlier  terminated and abandoned  pursuant to
                Section 7 hereof (the  "Termination  Date"),  each of Seller and
                VSI shall:

                                (i)  conduct  its  operations  according  to its
                        ordinary  and usual course of business  consistent  with
                        past practice; and

                                  (ii)  use  its  reasonable   best  efforts  to
                         preserve intact its business organization and goodwill,
                         to keep  available  the  services of its  officers  and
                         directors,  and to maintain satisfactory  relationships
                         with  suppliers,  distributors,  licensors,  licensees,
                         customers,   Employees  and  others   having   business
                         relationships with it.

                         5.4.2   Negative   Covenants.   Without   limiting  the
                generality of the foregoing,  and except for actions to be taken
                in connection with any of the transactions  contemplated hereby,


<PAGE>

                without  Buyer's prior written  consent,  VSI shall not, and VSI
                shall cause Seller not to, on or after the date hereof and until
                the earlier of the Closing Date or the Termination Date:

                                  (i) other than dividends that would be paid to
                         the  holders  of the  Series C  Preferred  Stock in the
                         ordinary  course,  declare or pay any cash dividends on
                         its outstanding shares of capital stock;

                                  (ii) merge with,  consolidate  with,  sell its
                         assets to or  acquire  substantially  all the assets or
                         capital stock of, any other  corporation or Person,  or
                         enter into any other  transaction  not in the  ordinary
                         and usual course of its business;

                                  (iii)  incur  any  indebtedness  for  borrowed
                         money or guarantee  any such  indebtedness  or issue or
                         sell  any  debt   securities   or  guarantee  any  debt
                         securities   of  others,   except  that  it  may  incur
                         indebtedness   in  the  ordinary   course  of  business
                         consistent with prior practice;

                                  (iv) make any direct or  indirect  redemption,
                         purchase  or other  acquisition  of any of its  capital
                         stock;

                                  (v)  create  or amend  any  pension  or profit
                         sharing  plan,  bonus,  deferred  compensation,   death
                         benefit,  or retirement plan, or any other benefit plan
                         or program;

                                  (vi) amend its Certificate of Incorporation or
                         Bylaws, as amended to the date hereof, except as may be
                         necessary to carry out this Agreement or as required by
                         law;

                                  (vii) issue any shares of its  capital  stock,
                         effect  any  stock  split  or   otherwise   change  its
                         capitalization as it exists on the date hereof;

                                  (viii)  grant,  confer or award  any  options,
                         warrants,   conversion  rights  or  other  rights,  not
                         existing on the date  hereof,  to acquire any shares of
                         its capital stock;

                                  (ix)  enter  into  any  agreement  or make any
                         undertaking   which  could  be   violated,   or  create
                         obligations which could be accelerated,  as a result of
                         changes or  developments  or the  absence of changes or
                         developments  in,  the  business,   assets,   earnings,
                         operations or condition, financial or otherwise, of any
                         other  party  hereto  or  any of  its  subsidiaries  or
                         affiliates; or


<PAGE>

                                (x) make any  material  changes  in any of their
                        respective management employment arrangements.

                5.5      Due Diligence; Access to Information and Customers

                                  5.5.1 General Due Diligence  Review.  From and
                         after the date hereof and  throughout  the period prior
                         to the earlier of the Closing  Date or the  Termination
                         Date, Buyer and its officers,  employees,  accountants,
                         counsel  and  other  authorized   representatives   may
                         perform  a due  diligence  review  of  VSI  and  Seller
                         relating to matters other than  Environmental  matters.
                         In  the  event  that  the   results   thereof  are  not
                         reasonably  satisfactory to Buyer,  Buyer may terminate
                         this Agreement as provided in Section 7.1.4 hereof.

                                  5.5.2 Environmental Due Diligence Review. From
                         and after the date hereof  through  the  Closing  Date,
                         Buyer and its officers, employees, accountants, counsel
                         and other authorized representatives will perform a due
                         diligence   review  of  VSI  and  Seller   relating  to
                         Environmental  matters  associated with the Facilities,
                         and  activities  of VSI and Seller  (collectively,  the
                         "Environmental  Due  Diligence  Review").  Buyer  shall
                         cause a qualified independent environmental engineering
                         and  consulting  firm  reasonably  acceptable to VSI to
                         perform  such a review.  Buyer shall not provide a copy
                         of any  report  resulting  from the  Environmental  Due
                         Diligence  to VSI,  unless  VSI  specifically  requests
                         otherwise.  If the  Environmental  Due Diligence Review
                         reveals  that  one or more  Facilities  has one or more
                         problems  relating to the Environment  (including,  but
                         not  limited   to,   Environmental   Liabilities)   the
                         remedying of which is or are reasonably advisable,  and
                         the aggregate  estimated  cost of such remedy as quoted
                         to Buyer is in excess of  $1,000,000,  then  Buyer will
                         have  the  right  to  exclude  any  one or more of such
                         Facilities  from  the  Assets  so  that  the  aggregate
                         estimated  cost of the  remedying  the  problems at the
                         remaining Facilities shall be as close to $1,000,000 as
                         practicable without exceeding $1,000,000.

                                  5.5.3   Reimbursement  for  Environmental  Due
                         Diligence Review.  If, as a result of the Environmental
                         Due Diligence  Review,  Environmental  Contamination is
                         discovered  that  is  indemnifiable  as  a  Loss  under
                         Section 4.1 hereof  pursuant to Section  4.5.1  hereof,
                         VSI shall  reimburse Buyer from the Escrow Fund for the
                         total costs of the  Environmental  Due Diligence Review
                         of each property where such indemnifiable Environmental
                         Contamination is present.
<PAGE>

                                  5.5.4 Access. Each of VSI and Seller shall, as
                         soon as  possible  and in any  event no later  than the
                         Delivery Date, (i) afford to Buyer and to its officers,
                         employees,  accountants,  counsel and other  authorized
                         representatives   reasonable  access,   throughout  the
                         period  prior to the earlier of the Closing Date or the
                         Termination Date, to each of VSI's and Seller's plants,
                         properties,  equipment,  personnel,  books and  records
                         (including,  but not  limited  to,  audit  and tax work
                         papers and surveys, reports,  studies,  evaluations and
                         the  like   pertaining  to  the   Environment   at  the
                         Facilities  or Former  Facilities  (during  the time of
                         ownership  or  operation  by  VSI  or  Seller,   or  to
                         activities of VSI or Seller);  (ii) use its  reasonable
                         best efforts to cause its representatives to furnish to
                         Buyer  and  to  its  authorized   representatives  such
                         additional  financial  and  operating  data  and  other
                         information  as  to  its   respective   businesses  and
                         properties   as   Buyer   or   its   duly    authorized
                         representatives   may  from  time  to  time  reasonably
                         request;  (iii) provide all  authorizations  reasonably
                         necessary   for   Buyer  to  review   records   of  any
                         Governmental  Body with  jurisdiction;  and (iv) afford
                         Buyer  and  its   representatives   reasonable  access,
                         throughout  the  period  prior  to the  earlier  of the
                         Closing Date or the  Termination  Date,  to its present
                         and potential  customers,  and Buyer and its authorized
                         representatives  shall have the right to  contact  such
                         customers and conduct such due diligence  investigation
                         relating   to   customer   relations   as  Buyer  deems
                         reasonably  necessary or  appropriate.  Buyer agrees to
                         perform all due diligence  under this Section 5.5 using
                         its reasonable  best efforts to minimize  disruption to
                         VSI's and Seller's  business.  Buyer further  agrees to
                         indemnify,  defend  and hold  Seller  harmless  for all
                         losses  resulting from physical damages caused by Buyer
                         or its agents in the course of Buyer's  due  diligence,
                         and to restore the Facilities to substantially the same
                         condition  they were in prior  thereto.  Buyer  further
                         agrees to dispose of any wastes or  materials it or its
                         agents generated during the Environmental Due Diligence
                         Review,  and to do so in accordance with all applicable
                         Legal Requirements.

                                  5.5.5   Monthly   Financial   Statements   and
                         Reports.   VSI  and  Seller  shall   deliver  to  Buyer
                         unaudited    financial    statements    (including    a
                         consolidated balance sheet,  consolidated  statement of
                         operations,  consolidated  statement of cash flows, and
                         consolidated  statement  of  stockholders'  equity) and
                         other  operating  reports for each month beginning with
                         July 1998 and ending with the month preceding the month
                         during  which  the  Closing   occurs.   Such  financial
                         statements and operating  reports shall be delivered to


<PAGE>

                         Buyer no later than twenty  business days after the end
                         of the month the  subject  thereof and shall be subject
                         to no warranty or representation of Seller or VSI.

                5.6  Acquisition  Proposals.   Neither  VSI  nor  Seller  shall,
        directly or indirectly, through any officer, director, agent, affiliate,
        representative  (including,  without  limitation,   investment  bankers,
        attorneys  and  accountants)  or  otherwise,  (i)  solicit,  initiate or
        encourage submission of inquiries,  proposals or offers from any Person,
        corporation,  partnership or other entity or group (as such term is used
        in  Section  13(d)(3)  of the  Exchange  Act) other than Buyer (a "Third
        Party"),  relating to any acquisition or purchase of all or a portion of
        the assets of, or any equity interest in, VSI or Seller;  or (ii) unless
        the  Board has  determined  that such  Third  Party has made a  Superior
        Takeover  Proposal,  participate  in  any  discussions  or  negotiations
        regarding,  or furnish to any Third Party any  information  with respect
        to, or otherwise cooperate in any way with, or assist or participate in,
        facilitate or encourage,  any effort or attempt by any Third Party to do
        or seek any of the foregoing. VSI and Seller shall promptly notify Buyer
        if any such proposal or offer,  or any inquiry or contact with any Third
        Party with respect  thereto,  is made,  and shall in any such notice set
        forth in reasonable detail the identity of the Third Party and the terms
        and conditions of such inquiry, proposal or offer. In the event that (a)
        the Closing shall fail to occur as the result of VSI or Seller violating
        the terms of this Section 5.6 or (b) VSI or Seller shall have determined
        that a Superior Takeover  Proposal exists,  shall have elected to accept
        such Superior Takeover Proposal and either the transaction  contemplated
        thereby is consummated or VSI or Seller  terminates  this Agreement as a
        result of such election,  VSI and Seller shall promptly, but in no event
        later than one day after the first of such events shall occur, pay Buyer
        an aggregate  fee of  $2,000,000,  which amount shall be payable in same
        day funds, plus all Expenses.  A "Superior  Takeover Proposal" means any
        bona fide (w) tender or exchange  offer;  (x)  proposal  for a merger to
        which  VSI or  Seller  would  be a  party;  (y)  consolidation  or other
        business  combination   involving  VSI  or  Seller;  or  (z)  any  other
        arrangement  to  acquire,  directly  or  indirectly,  for  consideration
        consisting  of cash,  securities or a  combination  thereof,  all of the
        common stock of VSI or Seller then  outstanding or all or  substantially
        all of the assets of VSI or Seller on terms that the Board determines in
        its good faith reasonable  judgment (after consultation with a financial
        advisor of nationally recognized reputation) to be more favorable to the
        stockholders  of  VSI  than  the   transactions   contemplated  by  this
        Agreement.

                5.7 Public Announcements. On or after the date hereof, and until
        the earlier of the Closing Date or the Termination Date, neither VSI nor
        Seller  shall  furnish any written  communication  (other than the Proxy
        Materials) to its  stockholders,  customers,  creditors or to the public
        generally  if the subject  matter  thereof  relates to the  transactions
        contemplated  hereby  without  the  prior  approval  of  Buyer as to the
        content  thereof;  provided,  however,  that the foregoing  shall not be
        deemed to prohibit any  disclosure  required by any applicable law or by
        any Governmental Body having jurisdiction over such matters.


<PAGE>

                5.8 Notification of Certain  Matters.  VSI and Seller shall give
        prompt  notice to Buyer,  and Buyer shall give prompt  notice to VSI and
        Seller,  of (i) the occurrence,  or failure to occur, of any event which
        occurrence  or failure  would be likely to cause any  representation  or
        warranty of such party  contained  herein to be untrue or  inaccurate in
        any  material  respect at any time from the date  hereof to the  Closing
        Date; and (ii) any material  failure of VSI or Seller,  or of Buyer,  as
        the case may be, or of any officer, director, employee or agent thereof,
        to comply with or satisfy any  covenant,  condition  or  agreement to be
        complied with or satisfied by it hereunder.

                5.9 Best Efforts.  Each of VSI and Seller agrees to use its best
        efforts to take, or cause to be taken, all actions,  and to do, or cause
        to be done,  all things  reasonably  necessary,  proper or  advisable to
        consummate  and make  effective the  transactions  contemplated  hereby,
        including, without limitation,  obtaining all authorizations,  consents,
        waivers  and  approvals  as may  be  required  in  connection  with  the
        assignment  of those  contracts,  agreements,  licenses,  leases,  sales
        orders,  purchase  orders and other  commitments  to be assumed by Buyer
        pursuant hereto; provided that Seller shall not be obligated to make any
        payments in order to obtain any such authorizations,  consents,  waivers
        or approvals.

                5.10 Execution of Additional  Documents.  Each party hereto will
        at any time, and from time to time after the Closing Date,  upon request
        of the other party  hereto,  execute,  acknowledge  and deliver all such
        further deeds, assignments,  transfers,  conveyances, powers of attorney
        and assurances,  and take all such further action,  as may be reasonably
        required to carry out the intent of this Agreement,  and to transfer and
        vest title to any Asset being transferred hereunder,  and to protect the
        right,  title and  interest in and  enjoyment of all of the Assets sold,
        granted, assigned, transferred,  delivered and conveyed pursuant hereto;
        provided,  however, that this Agreement shall be effective regardless of
        whether any such additional documents are executed.

                5.11     Fees and Expenses

                         5.11.1  Expense  Reimbursement.  If this  Agreement  is
                terminated by VSI or Seller for any reason whatsoever other than
                a failure of any  condition  set forth in Section 6.2 hereof and
                Buyer is not in material  breach of its material  covenants  and
                agreements  hereunder,  then VSI or Seller shall, whether or not
                any payment is made pursuant to Section 5.11.2 hereof, reimburse
                each of Buyer and its  stockholders  and  affiliates  (not later
                than one day after  submission of  statements  therefor) for all
                reasonable  out-of-pocket expenses and fees actually incurred by
                it  or  on  its  behalf  in  connection  with  the  negotiation,
                preparation, execution and performance of this Agreement and the
                transactions  contemplated  hereby,  or reasonably  and actually
                incurred by banks and other financial  institutions  and assumed
                by Buyer or its  stockholders  or affiliates in connection  with

<PAGE>

                the negotiation,  preparation, execution and performance of this
                Agreement,  any  financing  related  hereto  and any  definitive
                financing  agreements  relating  thereto  (all of the  foregoing
                being referred to herein collectively as the "Expenses").

                         5.11.2  Other Costs and  Expenses.  Except as otherwise
                provided herein,  all costs and expenses  incurred in connection
                with this  Agreement and the  transactions  contemplated  hereby
                shall be paid by the party incurring such costs and expenses.

                5.12   Limitation  of  Liability.   Notwithstanding   any  other
        provision hereof, no shareholder,  officer,  director,  employee, agent,
        attorney,  affiliate,  servant,  successor,  assign or representative of
        either party hereto or of any affiliate thereof shall have any personal,
        partnership,  corporate or other  liability or obligation  whatsoever in
        respect  of or  relating  to the  covenants,  obligations,  indemnities,
        representations  or  warranties  of Buyer or VSI and Seller  under or by
        reason  hereof  or in  respect  of any  certificate  or  other  document
        delivered with respect hereto.

                5.13 HSR Act Filings.  Each of VSI and Seller and Buyer shall as
        soon  as  practicable  after  the  date  of this  Agreement  file  their
        respective   notification  and  report  forms  with  the  Federal  Trade
        Commission and the United States Department of Justice as required under
        the HSR  Act.  Each of VSI and  Seller  and  Buyer  agree  to use  their
        respective  good faith  efforts to eliminate  any concern on the part of
        any  Governmental  Body  regarding  the  legality  of  the  transactions
        contemplated under this Agreement.

                5.14  Employees.  Buyer shall,  effective  as of Closing,  offer
        employment  to all  Employees  of Seller  (subject  to  satisfaction  of
        Buyer's  standard  conditions  to  employment)  other than as  otherwise
        reasonably  determined  by Buyer (but in no event shall Buyer  terminate
        such number of former  employees  of Seller  during such time periods as
        would  require  any action on the part of Seller  under  WARN).  VSI and
        Seller  shall  fully  cooperate  with  Buyer  and  lend  all  assistance
        reasonably  requested by Buyer for the purpose of  facilitating  Buyer's
        employment of and communication with Employees of Seller, including, but
        not limited to,  allowing access to the Facilities and any Employees and
        payroll and other Employee records requested by Buyer.

                5.15 Dispute Resolution. Other than as provided in Section 1.9.2
        hereof  and  notwithstanding  any  provision  of this  Agreement  to the
        contrary,  all  disputes,  controversies  or  claims  arising  out of or
        relating to this  Agreement  and the  transactions  contemplated  hereby
        shall be resolved by agreement among the parties, or, if not so resolved
        within forty five (45) days following written notice of dispute given by
        either  party  hereto to the other,  and if  written  notice is given by
        either of the parties as provided  below and the matter is not otherwise
        resolved by the parties  hereto,  by resort to arbitration in accordance
        with Title 9 of the United  States Code (the United  States  Arbitration


<PAGE>

        Act) and the Commercial  Arbitration Rules, as amended from time to time
        (the "Rules") by the American Arbitration  Association and the following
        provisions; provided, however, that the provisions of this Section shall
        prevail in the event of any conflict with such Rules. Within thirty (30)
        days after the  giving of notice by a party to the other  parties of its
        desire to refer the matter in dispute to arbitration,  the parties agree
        that the matter shall be presented  to a panel of three  arbitrators  at
        least one of whom shall have at least ten years of  industry  experience
        relating  to the  subject  matter  of the  dispute.  Such  selection  of
        arbitrators  shall  be made in  accordance  with  the  Rules.  Any  such
        arbitration  proceeding  shall be held at a location to be determined by
        the arbitrators.  Any provisional  remedy that would be available from a
        court of law shall be available  from the  arbitrator  to the parties to
        this  Agreement   pending   arbitration.   The  written   decisions  and
        conclusions of a majority of the  arbitration  panel with respect to the
        matters referred to them pursuant hereto shall be final and binding upon
        the parties to the dispute, and confirmation and enforcement thereof may
        be rendered thereon by any court having jurisdiction upon application of
        any person who is a party to the arbitration  proceeding.  The costs and
        expenses  incurred in the course of such  arbitration  shall be borne by
        the party or parties  against whose favor the decisions and  conclusions
        of the arbitration panel are rendered;  provided,  however,  that if the
        arbitration  panel determines that its decisions are not rendered wholly
        against the favor of one party or parties or the other,  the arbitration
        panel shall be  authorized  to apportion  such costs and expenses in the
        manner that it deems fair and just in light of the merits of the dispute
        and its  resolution.  The  arbitration  panel  shall  have no  power  or
        authority  under this Agreement or otherwise to award or provide for the
        award of punitive or  consequential  damages  against any party.  In any
        arbitration  relating to whether Buyer has  "reasonably  concluded" (for
        purposes of Section  6.1.16)  that there has been no material  breach of
        the   warranties   in  Section   2.24,   the   burden  of   establishing
        reasonableness shall be on Buyer.

        6.      Conditions of Closing

                6.1 Buyer's  Conditions to Closing.  The  obligation of Buyer to
        purchase and pay for the Assets and to assume the specified  liabilities
        and  obligations  set forth herein  shall be subject to and  conditioned
        upon, at Buyer's option,  the satisfaction at the Closing of each of the
        following conditions:

                         6.1.1  The   holders   of  shares  of  the  issued  and
                outstanding  capital  stock of VSI and  Seller  shall  have duly
                adopted  and  approved  this  Agreement  and  all   transactions
                contemplated  hereby  in  accordance  with the  requirements  of
                Delaware  law and Ohio law,  respectively,  and the  Articles or
                Certificate of Incorporation  and Bylaws, as amended to the date
                of such adoption and approval, of each of VSI and Seller.

                         6.1.2 All representations and warranties of each of VSI
                and Seller  contained  herein  shall be true and  correct in all
                material  respects  at  and  as of the  Closing  Date  (provided
                however that in respect of the  warranties  and  representations


<PAGE>

                contained in Section 2.24 hereof Section 6.1.16 shall apply) and
                each of VSI and Seller shall have  performed all  agreements and
                covenants in all material  respects and satisfied all conditions
                on its part to be  performed  or  satisfied  by the Closing Date
                pursuant to the terms  hereof,  and Buyer shall have  received a
                certificate  of each of VSI and Seller,  signed by its President
                and dated the Closing Date, to both such effects.

                         6.1.3  As of the  Closing,  there  shall  have  been no
                material  change  since  the date of the most  recent  Financial
                Statements  in VSI or Seller,  and neither VSI nor Seller  shall
                have  suffered  any  material  loss  (whether or not insured) by
                reason of physical damage caused by fire,  earthquake,  accident
                or other calamity which substantially affects the value of their
                respective assets,  properties or business, and Buyer shall have
                received a certificate of each of VSI and Seller,  signed by its
                principal  financial officer and dated the Closing Date, to such
                effect.

                        6.1.4 Seller and VSI shall have  executed and  delivered
                the Receivables Guaranty.

                         6.1.5 VSI shall have  delivered to Buyer a  Certificate
                of the Secretary of State (or other authorized  public official)
                of VSI's and Seller's  respective  jurisdiction of incorporation
                (and each other  jurisdiction  listed in  Schedule  2.5  hereof)
                certifying  as of a date  reasonably  close to the Closing  Date
                that each of VSI and Seller has filed all required reports, paid
                all required  fees and taxes,  and is, as of such date,  in good
                standing and  authorized  to transact  business as a domestic or
                foreign corporation, as the case may be.

                        6.1.6 Seller and VSI shall have  executed and  delivered
                the Escrow Agreement.

                           6.1.7  The  Escrow  Agent  shall  have   acknowledged
                  receipt of the Escrow Fund and  accepted  the same  subject to
                  the terms and conditions of the Escrow Agreement.

                           6.1.8 Buyer shall have  received from Arnall Golden &
                  Gregory,  LLP, counsel for VSI and Seller,  an opinion,  dated
                  the Closing Date, in the form attached hereto as Exhibit "D".

                           6.1.9 Each of VSI and Seller shall have  obtained all
                  authorizations,  consents,  waivers  and  approvals  as may be
                  required in connection with the assignment of those contracts,
                  agreements,  licenses,  leases, sales orders,  purchase orders
                  and other commitments to be assigned to Buyer pursuant hereto.


<PAGE>

                           6.1.10   Seller  and  VSI  shall  have  executed  and
                  delivered  the  Bill  of  Sale,   Assignment   and  Assumption
                  Agreement.

                           6.1.11 Each of Seller and VSI shall have delivered to
                  Buyer a certificate,  dated the Closing Date, of each of VSI's
                  and Seller's corporate Secretary certifying:

                                    (i)   Resolutions   of  the   Board,   VSI's
                           stockholders,   Seller's   board  of  directors   and
                           Seller's sole stockholder approving and adopting this
                           Agreement and all  transactions  contemplated  hereby
                           and  authorizing  execution of this Agreement and the
                           execution,    performance   and   delivery   of   all
                           agreements,  documents and transactions  contemplated
                           hereby; and

                                    (ii)   The   incumbency   of  its   officers
                           executing  this  Agreement  and  all  agreements  and
                           documents contemplated hereby.

                           6.1.12 The approval  and all consents  from any Third
                  Party  or   Governmental   Body  required  to  consummate  the
                  transactions  contemplated hereby shall have been obtained and
                  the  waiting  period  and  any  statutory   extension  thereof
                  applicable   to   the   consummation   of   the   transactions
                  contemplated  by this  Agreement  under the HSR Act shall have
                  expired or been terminated.

                         6.1.13 No  Proceeding  shall  have been  instituted  or
                threatened  which  questions  the  validity  or  legality of the
                transactions  contemplated  hereby or any governmental  consent,
                approval or authorization  necessary for the consummation of the
                transactions of the transactions contemplated by this Agreement.

                         6.1.14 As of the  Closing,  there shall be no effective
                injunction,  writ, preliminary restraining order or any order of
                any nature issued by a court of competent jurisdiction directing
                that the transactions  provided for herein or any of them not be
                consummated  as so provided or imposing  any  conditions  on the
                consummation of the transactions  contemplated  hereby, which is
                unduly burdensome on Buyer.

                         6.1.15  Buyer  shall  have  received  from each of LOR,
                Inc., Rollins Investment Fund and Rollins Holding Company, Inc.,
                an executed  agreement whereby each of them, on their own behalf
                and on behalf of their respective affiliates, agrees to be bound
                by certain restrictive covenants  substantially similar to those
                imposed  on  Seller  and VSI  pursuant  to  Section  5.2 of this
                Agreement;  provided,  however,  that  no such  provision  shall
<PAGE>

                prohibit an investment in any  publicly-traded  entity that does
                not require the filing of a Schedule  13D nor Schedule 13G under
                the Exchange Act.

                         6.1.16 Buyer shall have reasonably concluded, following
                the  Environmental  Due  Diligence  Review,  that  there  are no
                material  breaches in the warranties in Section 2.24;  provided,
                however, that such conclusion shall not preclude the remedies of
                Buyer  provided for herein.  For purposes of this Section 6.1.16
                only,  "material  breaches"  shall be defined as those  matters,
                which in the opinion of the environmental consultant retained as
                provided in Section 5.5.2, are reasonably  likely to cost in the
                aggregate in excess of $1,000,000 to remedy  (excluding the cost
                of addressing any environmental  issues on Facilities that Buyer
                elects to exclude from the purchase  pursuant to Section 5.5.2).
                If Buyer's consultant so concludes, then Buyer shall promptly so
                inform VSI of the  consultant's  opinion.  At such time, VSI may
                ask  Buyer  for the  information  and data  upon  which  Buyer's
                consultant bases his or her opinion.  If VSI does not agree that
                it is  reasonably  likely  to cost in excess  of  $1,000,000  to
                remedy  the  environmental  problems,  then VSI  shall  promptly
                inform Buyer of its belief.  If the parties  cannot resolve this
                issue within fifteen days after VSI so informs  Buyer,  then the
                matter shall be  submitted to  arbitration  in  accordance  with
                Section  5.15 and the  Closing  shall  be  delayed  pending  the
                resolution of such arbitration.  If the transaction closes, then
                VSI's and  Seller's  obligation  to  perform  any  Environmental
                Remediation  shall be governed by the  provisions  and standards
                set forth in Section 4.5

                6.2 Seller's and VSI's Conditions to Closing.  The obligation of
        Seller and VSI to sell, grant, convey, assign,  transfer and deliver the
        Assets shall be subject to and  conditioned  upon, at VSI's option,  the
        satisfaction at the Closing of each of the following conditions:

                        6.2.1  The   holders   of  shares  of  the   issued  and
                outstanding  capital  stock of VSI shall have duly  adopted  and
                approved this Agreement and all transactions contemplated hereby
                in  accordance  with the  requirements  of Delaware  law and the
                Certificate of Incorporation  and Bylaws, as amended to the date
                of such adoption, of VSI.

                         6.2.2  All  representations  and  warranties  of  Buyer
                contained  herein  shall  be true and  correct  at and as of the
                Closing  Date in all  material  respects  and Buyer  shall  have
                performed all agreements and covenants in all material  respects
                and  satisfied  all  conditions  on its part to be  performed or
                satisfied by the Closing Date pursuant to the terms hereof,  and
                VSI and Seller  shall  have  received  a  certificate  of Buyer,
                signed  by its Chief  Executive  Officer  and dated the  Closing
                Date, to both such effects.


<PAGE>

                         6.2.3 Buyer shall have effected payment of the Purchase
                Price  (less  the  Escrow  Fund) in  accordance  with the  prior
                written instructions of Seller.

                        6.2.4 Buyer shall have executed and delivered the Escrow
                Agreement.

                        6.2.5  Buyer shall have  effected  payment of the Escrow
                Fund.

                         6.2.6 The Escrow Agent shall have acknowledged  receipt
                of the Escrow Fund and  accepted  the same  subject to the terms
                and conditions of the Escrow Agreement.

                        6.2.7 Buyer shall have  executed and  delivered the Bill
                of Sale, Assignment and Assumption Agreement.

                         6.2.8  Buyer shall have  delivered  to Seller and VSI a
                certificate,  dated  the  Closing  Date,  of  Buyer's  corporate
                Secretary certifying:

                                  (i)  Resolutions  of its  board  of  directors
                         adopting  and   approving   this   Agreement   and  all
                         transactions   contemplated   hereby  and   authorizing
                         execution  of  this   Agreement   and  the   execution,
                         performance and delivery of all  agreements,  documents
                         and transactions contemplated hereby; and

                                  (ii) The incumbency of its officers  executing
                         this   Agreement  and  all   agreements  and  documents
                         contemplated hereby.

                         6.2.9 VSI and Seller  shall have  received  from Haynes
                and Boone, LLP, counsel for Buyer, an opinion, dated the Closing
                Date, in the form attached hereto as Exhibit "E".

                         6.2.10 The  approval  and all  consents  from any Third
                Party  or   Governmental   Body  required  to   consummate   the
                transactions  contemplated  hereby shall have been  obtained and
                the  waiting   period  and  any  statutory   extension   thereof
                applicable to the consummation of the transactions  contemplated
                by this  Agreement  under the HSR Act shall have expired or been
                terminated.

                         6.2.11 No  Proceeding  shall  have been  instituted  or
                threatened  which  questions  the  validity  or  legality of the
                transactions  contemplated  hereby or any governmental  consent,
                approval or authorization  necessary for the consummation of the
                transactions of the transactions contemplated by this Agreement
<PAGE>

                         6.2.12 As of the  Closing,  there shall be no effective
                injunction,  writ, preliminary restraining order or any order of
                any nature issued by a court of competent jurisdiction directing
                that the transactions  provided for herein or any of them not be
                consummated  as so provided or imposing  any  conditions  on the
                consummation of the transactions  contemplated  hereby, which is
                unduly burdensome on VSI or Seller.

                         6.2.13  VSI,  Seller  and all  guarantors  of any  bank
                indebtedness  of VSI or Seller  shall  have  received  a written
                release  therefrom in form and  substance  satisfactory  to VSI,
                Seller and such guarantors.

        7.      Termination and Abandonment

                        7.1  Reasons  for   Termination.   Anything   herein  or
                elsewhere to the contrary notwithstanding, this Agreement may be
                terminated  and  abandoned at any time after the date hereof but
                not later than the Closing:

                         7.1.1 by the mutual consent of VSI, Seller and Buyer;

                         7.1.2 by Buyer at any time after December 31, 1998, if,
                by that date,  the  conditions  set forth in Section  6.1 hereof
                shall not have been fulfilled or waived;

                         7.1.3 by VSI and Seller at any time after  December 31,
                1998,  if, by that date, the conditions set forth in Section 6.2
                hereof shall not have been fulfilled or waived;

                         7.1.4 by Buyer  at any time  prior to the  later of (i)
                the fifteenth  business day after the Delivery Date and (ii) the
                fifteenth  business day after such later date as Buyer  actually
                receives  the  Preliminary  Schedules  required  by Section  1.7
                hereof,  if the general due diligence  investigation  of VSI and
                Seller  by  Buyer  pursuant  to  Section  5.5.1  hereof,  or any
                Schedule  hereto or any  other  document  delivered  to Buyer as
                contemplated   hereby,   shall  have   revealed   any  facts  or
                circumstances  which,  in the  reasonable  judgment of Buyer and
                regardless  of the cause  thereof,  reflect in a material way on
                VSI or Seller;

                        7.1.5 by Buyer at any time if there has been a  material
                change in VSI or Seller after the date hereof;

                         7.1.6  by  Buyer  or by VSI and  Seller  at any time if
                there  has  been a  material  breach  of any  representation  or
                warranty made by the other party herein or in any certificate or
                other document  delivered  pursuant  hereto or if there has been
                any  failure  by the  other  party to  perform  in all  material

<PAGE>

                respects all  obligations or to comply with all covenants on its
                part to be performed hereunder; or

                         7.1.7 by Buyer or by Seller and VSI if there shall have
                been any statute,  rule or regulation  enacted or promulgated or
                deemed applicable to the transactions contemplated hereby by any
                Governmental  Body that, in the reasonable  judgment of Buyer or
                of VSI and  Seller,  as the case may be,  might (i)  result in a
                significant  delay in the ability of the  parties to  consummate
                the transactions  contemplated  hereby;  (ii) render the parties
                unable to consummate the transactions contemplated hereby; (iii)
                make such  consummation  illegal;  or (iv) otherwise  materially
                adversely affect VSI or Seller.

                         7.1.8 by Buyer if VSI and Seller  shall fail to deliver
                one or more of the  Preliminary  Schedules to this  Agreement in
                accordance  with  Section  1.7  hereof  or if one or more of the
                Preliminary Schedules, as delivered, differs materially from the
                information  concerning VSI and Seller provided by VSI or Seller
                to Buyer prior to the execution of this Agreement.

                7.2 Procedure  Upon and Effect of  Termination.  In the event of
        any termination and abandonment pursuant to Section 7.1 hereof,  written
        notice  thereof  shall  forthwith  be given to the  other  party and the
        transactions  contemplated  hereby  shall  thereupon be  terminated  and
        abandoned,  without further action by Buyer or by VSI and Seller (except
        for the  provisions of Sections  5.6,  5.11 and 5.12 hereof),  and there
        shall be no  liability  on the part of  either  VSI,  Seller or Buyer or
        their respective  officers,  directors or  stockholders,  except for the
        provisions  of  Sections  5.6,  5.11 and 5.12  hereof or except  for the
        material breach of any  representation,  warranty or covenant  contained
        herein that is within the reasonable control of the party in breach.

        8.      Miscellaneous

                8.1 Notices. Any notice, consent,  approval,  request, demand or
        other  communication  required or permitted hereunder must be in writing
        to be  effective  and  shall be deemed  delivered  and  received  (i) if
        personally   delivered  or  delivered   by  telecopy   with   electronic
        confirmation,  when actually received by the party to whom sent, or (ii)
        if delivered by mail (whether actually received or not), at the close of
        business on the third business day next following the day when placed in
        the federal mail, postage prepaid,  certified or registered mail, return
        receipt requested, addressed as follows:


<PAGE>

                If to Buyer:

                HydroChem Industrial Services, Inc.
                5956 Sherry Lane, Suite 930
                Dallas, Texas 75225
                Attention: Chief Executive Officer
                Facsimile No.: (214) 361-4715

                with a copy to:

                Haynes and Boone, LLP
                600 Congress Avenue, Suite 1600
                Austin, Texas 78701
                Attention: Dennis R. Cassell
                Facsimile No.: (512) 867-8470

                If to Seller or VSI:

                Valley Systems, Inc.
                11580 Lafayette Drive, NW
                Canal Fulton, Ohio 44614
                Attention: Chief Executive Officer
                Facsimile #:  (330) 854-3444

                         with a copy to:

                Arnall Golden & Gregory, LLP
                2800 One Atlantic Center
                1201 West Peachtree Street
                Atlanta, Georgia 30309
                Attention: Jonathan Golden
                Facsimile #: (404) 873-8701

        (or to such other  address as any party shall specify by written
        notice so given).

                8.2 Binding  Effect;  Benefits.  This Agreement shall be binding
        upon and shall  inure to the  benefit  of the  parties  hereto and their
        respective  successors and permitted assigns.  Notwithstanding  anything
        contained herein to the contrary,  nothing in this Agreement,  expressed
        or implied,  is intended to confer on any Person (other than the parties
        hereto,  the  Buyer  Indemnitees  (but only with  respect  to  Section 4
        hereof),  or their  respective  successors  and  permitted  assigns) any
        rights, remedies,  obligations or liabilities under or by reason of this
        Agreement.

                8.3  Entire  Agreement.   This  Agreement,   together  with  the
        Exhibits,  Schedules and other documents contemplated hereby, constitute

<PAGE>

        the  final  written  expression  of all of the  agreements  between  the
        parties,  and is a complete  and  exclusive  statement  of those  terms.
        Except as  specifically  included or referred to herein,  this Agreement
        and the Exhibits,  Schedules  and other  documents  contemplated  hereby
        supersede all  understandings  and  negotiations  concerning the matters
        specified  herein.   Any   representations,   promises,   warranties  or
        statements  made by any party  that  differ in any way from the terms of
        this written Agreement, and the Exhibits,  Schedules and other documents
        contemplated  hereby,  shall be given no  force  or  effect  (except  as
        specifically  included or referred to herein).  The parties specifically
        represent,   each  to  the  other,  that  there  are  no  additional  or
        supplemental  agreements  between them related in any way to the matters
        herein contained unless specifically  included or referred to herein. No
        addition to or  modification  of any  provision  hereof shall be binding
        upon any party unless made in writing and signed by all parties.

                8.4 Governing Law. THIS AGREEMENT, AND ALL QUESTIONS RELATING TO
        ITS VALIDITY,  INTERPRETATION,  PERFORMANCE AND ENFORCEMENT  (INCLUDING,
        WITHOUT  LIMITATION,  PROVISIONS  CONCERNING  LIMITATIONS OF ACTION, BUT
        EXCLUDING THE PROVISIONS OF SECTION 5.2 HEREOF AND THE PROVISIONS HEREOF
        RELATING TO THE CORPORATE  GOVERNANCE  OF SELLER),  SHALL BE GOVERNED BY
        AND  CONSTRUED  IN  ACCORDANCE  WITH THE LAWS OF THE  STATE OF  DELAWARE
        (EXCLUSIVE  OF THE CONFLICT OF LAW  PROVISIONS  THEREOF)  APPLICABLE  TO
        AGREEMENTS  MADE AND TO BE  PERFORMED  ENTIRELY  WITHIN SUCH STATE.  THE
        PROVISIONS  OF SECTION 5.2 HEREOF SHALL BE GOVERNED BY AND  CONSTRUED IN
        ACCORDANCE  WITH  THE  LAWS OF THE  STATE  OF  TEXAS  (EXCLUSIVE  OF THE
        CONFLICT OF LAW PROVISIONS THEREOF) APPLICABLE TO AGREEMENTS MADE AND TO
        BE PERFORMED  ENTIRELY WITHIN SUCH STATE. THE PROVISIONS HEREOF RELATING
        TO THE CORPORATE GOVERNANCE OF SELLER SHALL BE GOVERNED BY AND CONSTRUED
        IN ACCORDANCE WITH THE LAWS OF THE STATE OF OHIO.

                8.5  Survival.   All  of  the  terms,   conditions,   covenants,
        agreements,   warranties  and  representations  contained  herein  shall
        survive,  in  accordance  with their terms,  the execution  hereof,  the
        Closing hereunder and the Closing Date.

                8.6  Counterparts.  This Agreement may be executed in any number
        of  counterparts,  each of which shall be deemed an original  but all of
        which shall constitute one and the same instrument;  but in making proof
        of this  Agreement,  it shall not be necessary to produce or account for
        more than one such  counterpart.  It is not  necessary  that each  party
        hereto execute the same counterpart,  so long as identical  counterparts
        are executed by all parties.

<PAGE>

                8.7 Headings. Headings of the Sections of this Agreement are for
        the  convenience  of the parties only, and shall be given no substantive
        or interpretive effect whatsoever.

                8.8 Waivers. VSI and Seller may, by written notice to the Buyer,
        (i) extend the time for the  performance  of any of the  obligations  or
        other actions of Buyer  hereunder;  (ii) waive any  inaccuracies  in the
        representations  or  warranties  of  Buyer  contained  herein  or in any
        document delivered  pursuant hereto;  (iii) waive compliance with any of
        the  conditions or covenants of Buyer  contained  herein;  or (iv) waive
        performance of any of the obligations of Buyer hereunder.  Buyer may, by
        written  notice  to  VSI  and  Seller,  (i)  extend  the  time  for  the
        performance  of any of the  obligations  or other actions of each of VSI
        and Seller hereunder; (ii) waive any inaccuracies in the representations
        or  warranties  of each of VSI and  Seller  contained  herein  or in any
        document delivered  pursuant hereto;  (iii) waive compliance with any of
        the conditions or covenants of each of VSI and Seller contained  herein;
        or (iv) waive  performance of any of the  obligations of each of VSI and
        Seller hereunder.  Except as provided in the preceding two sentences, no
        action  taken  pursuant  hereto,   including   without   limitation  any
        investigation  by  or on  behalf  of  any  party,  shall  be  deemed  to
        constitute a waiver by the party taking such action of  compliance  with
        any  representations,  warranties,  covenants  or  agreements  contained
        herein.  The  waiver  by any party  hereto of a breach of any  provision
        hereunder  shall not operate or be construed as a waiver of any prior or
        subsequent breach of the same or any other provision hereunder.

                8.9  Incorporation  of Exhibits and Schedules.  All Exhibits and
        Schedules attached hereto are by this reference  incorporated herein and
        made a part hereof for all purposes as if fully set forth herein.

                8.10 Severability. If for any reason whatsoever, any one or more
        of the  provisions  hereof  shall  be  held  or  deemed  to be  illegal,
        inoperative,  unenforceable or invalid as applied to any particular case
        or in all  cases,  such  circumstances  shall  not  have the  effect  of
        rendering such provision illegal, inoperative,  unenforceable or invalid
        in any other case or of  rendering  any of the other  provisions  hereof
        illegal, inoperative,  unenforceable or invalid. Furthermore, in lieu of
        each illegal,  invalid,  unenforceable or inoperative  provision,  there
        shall be added  automatically,  as part of this  Agreement,  a provision
        similar in terms of such illegal, invalid,  unenforceable or inoperative
        provision as may be possible and as shall be legal,  valid,  enforceable
        and operative.

                8.11  Assignability.  Neither  this  Agreement  nor  any  of the
        parties'  rights  hereunder  shall be  assignable  by any  party  hereto
        without the prior written consent of the other parties hereto; provided,
        however,  that Buyer's or its successors' or assigns'  rights  hereunder
        may be assigned or otherwise  transferred,  in whole or in part, without
        any  other   party's   consent  (i)  to  any   successor  by  merger  or
<PAGE>

        consolidation  or (ii) to any  individual,  partnership,  corporation or
        other entity  deriving  title from Buyer or its successors or assigns to
        all or substantially all of the assets as constituted on the date of any
        such transfer,  provided that no such assignment  shall effect a release
        of  Buyer  or  its  successors  or  assigns  from  any   liabilities  or
        obligations hereunder.

                8.12 Drafting.  The parties acknowledge and confirm that each of
        their respective  attorneys have participated  jointly in the review and
        revision of this  Agreement  and that it has not been written  solely by
        counsel for one party. The parties hereto therefore  stipulate and agree
        that the rule of  construction to the effect that any ambiguities are to
        be or may be resolved  against the drafting  party shall not be employed
        in the  interpretation  of this  Agreement  to favor any  party  against
        another.

                8.13  References.  The  use of  the  words  "hereof,"  "herein,"
        "hereunder," "herewith," "hereto," "hereby," and words of similar import
        shall  refer  to  this  entire   Amended  and  Restated  Asset  Purchase
        Agreement,  and  not to any  particular  article,  section,  subsection,
        clause,  or  paragraph  hereof,  unless the  context  clearly  indicates
        otherwise.

                8.14 Calendar Days, Weeks and Months. Unless otherwise specified
        herein,  any reference to "day",  "week", or "month" herein shall mean a
        calendar day, week or month.

                8.15 Gender;  Plural and Singular.  Where the context  hereof so
        requires, the masculine gender shall include the feminine or neuter, and
        the singular shall include the plural and the plural the singular.

                8.16 Cumulative Rights. All rights and remedies specified herein
        are  cumulative and are in addition to, not in limitation of, any rights
        or  remedies  the  parties  may have at law or in  equity,  and all such
        rights and remedies may be exercised singularly or concurrently.

                8.17 No Implied Covenants. Each party, against the other, waives
        and relinquishes any right to assert, either as a claim or as a defense,
        that  the  other   party  is  bound  to   perform   or  liable  for  the
        nonperformance  of any  implied  covenant  or  implied  duty or  implied
        obligation.

                8.18  Attorneys'  Fees.  The  prevailing  party  in any  dispute
        between the parties  arising out of the  interpretation,  application or
        enforcement of any provision  hereof shall be entitled to recover all of
        its reasonable  attorney's  fees and costs whether suit be filed or not,
        including  without  limitation  costs and attorneys'  fees related to or
        arising out of any trial or appellate proceedings.

                8.19  Indirect  Action.  Where any  provision  hereof  refers to
        action to be taken by any Person or party, or which such Person or party

<PAGE>

        is prohibited from taking,  such provision  shall be applicable  whether
        the action in question is taken directly or indirectly by such Person or
        party.

                                   * * * * * *


<PAGE>


        IN WITNESS WHEREOF,  the parties have executed this Agreement and caused
the same to be duly  delivered on their  behalf on the day and year  hereinabove
first set forth.


                                  SELLER:

                                  VALLEY SYSTEMS OF OHIO, INC.


                                  By:___________________________________________
                                     Ed Strickland
                                     President and Chief Executive Officer

                                                   

                                  VSI:

                                  VALLEY SYSTEMS, INC.


                                  By:___________________________________________
                                     Ed Strickland
                                     President and Chief Executive Officer




                                  BUYER:

                                  HYDROCHEM INDUSTRIAL SERVICES, INC.


                                  By:___________________________________________
                                     B. Tom Carter, Jr.
                                     Chairman of the Board and
                                     Chief Executive Officer

<PAGE>

                                   APPENDIX B

                                ESCROW AGREEMENT

        This Escrow  Agreement,  dated as of  ____________,  1998 (the  "Closing
Date"),  among  HydroChem  Industrial  Services,  Inc.,  a Delaware  corporation
("Buyer"),  Valley Systems, Inc., a Delaware corporation,  and Valley Systems of
Ohio, Inc., an Ohio corporation  (collectively,  "Seller"),  and Bank One Texas,
N.A., a national banking association, as escrow agent ("Escrow Agent").

        This is the Escrow  Agreement  referred to in the  Amended and  Restated
Asset Purchase Agreement,  dated as of September 8, 1998, by and among Buyer and
Seller (the  "Purchase  Agreement").  Capitalized  terms used in this  agreement
without  definition  shall  have the  respective  meanings  given to them in the
Purchase Agreement.

        The parties, intending to be legally bound, hereby agree as follows:

1.      ESTABLISHMENT OF ESCROW

                (a)  Buyer  is  depositing  with  Escrow  Agent  the  amount  of
        $4,000,000 in immediately  available funds (as increased by any earnings
        thereon and as reduced by any  disbursements,  amounts  withdrawn  under
        Section  5(j)  hereof,  or losses on  investments,  the "Escrow  Fund").
        Escrow Agent acknowledges receipt thereof.

                (b) Escrow  Agent  hereby  agrees to act as escrow  agent and to
        hold, safeguard,  and disburse the Escrow Fund pursuant to the terms and
        conditions hereof.

2.      INVESTMENT OF FUNDS

        Except as Buyer and Seller may from time to time jointly instruct Escrow
Agent in writing,  the Escrow Fund shall be invested  from time to time,  to the
extent possible,  in United States Treasury Bills having a remaining maturity of
90 days  or less  and  repurchase  obligations  secured  by such  United  States
Treasury  Bills,  with any remainder  being  deposited and  maintained in demand
deposits with Escrow Agent, until disbursement of the entire Escrow Fund. Escrow
Agent is authorized to liquidate in accordance with its customary procedures any
portion of the Escrow Fund  consisting  of  investments  to provide for payments
required to be made under this Agreement.

3.      CLAIMS

                (a) From time to time on or before the third  anniversary of the
        date of this Agreement, Buyer may give notice (a "Notice") to Seller and
        Escrow  Agent  specifying  in  reasonable  detail  the nature and dollar

<PAGE>

        amount  of any  Claim  it may  have  under  the  terms  of the  Purchase
        Agreement;  Buyer  may make  more than one  claim  with  respect  to any
        underlying  state of facts.  If Seller  gives notice to Buyer and Escrow
        Agent disputing any Claim (a "Counter  Notice") within ten (10) business
        days  following  receipt by Escrow  Agent of the Notice  regarding  such
        Claim,  such Claim shall be resolved as provided in Section 3(b) hereof.
        If no  Counter  Notice is  received  by  Escrow  Agent  within  such ten
        business day period,  then the dollar amount of damages claimed by Buyer
        as set forth in its Notice shall be deemed  established  for purposes of
        this  Agreement and the Purchase  Agreement  and, at the end of such ten
        business day period,  Escrow Agent shall pay to Buyer the dollar  amount
        claimed in the Notice from (and only to the extent of) the Escrow  Fund.
        Escrow Agent shall not inquire into or consider whether a Claim complies
        with the requirements of the Purchase Agreement.

                (b) If a Counter Notice is given with respect to a claim, Escrow
        Agent shall make payment with respect  thereto only in  accordance  with
        (i)  joint  written  instructions  of Buyer  and  Seller or (ii) a final
        non-appealable  order of a court of  competent  jurisdiction.  Any court
        order  shall  be  accompanied  by a legal  opinion  by  counsel  for the
        presenting party satisfactory to the Escrow Agent to the effect that the
        order is final and non-appealable.  Escrow Agent shall act on such court
        order without further question.

4.      RELEASE OF ESCROW

                (a)(i) Provided no dispute or disputes in excess of an aggregate
        of $3,000,000 (or $2,000,000, if that part of the Escrow Fund subject to
        Section 4(b) below has been released to Seller),  less the amount of any
        payments  theretofore  made in satisfaction of Seller's  indemnification
        and guaranty  obligations,  exist as to any Claim or Claims by any Buyer
        Indemnitee  against  all or a portion  of the  Escrow  Fund on the first
        anniversary of the Closing Date, then $1,000,000, less the amount of any
        payments  in  satisfaction  of  Seller's  indemnification  and  guaranty
        obligations,  will be  released  to  Seller on the  first  business  day
        following such first anniversary of the Closing Date. To the extent such
        a  dispute  or  disputes  do exist as to a Claim or  Claims on the first
        anniversary  of the Closing  Date, an amount equal to the amount of such
        Claim or Claims (or if the amount of said Claims  cannot be  quantified,
        then  Buyer's  reasonable,  good  faith  estimate  of the  amount of the
        Claims) will be withheld  from such  partial  release of the Escrow Fund
        and will  continue to be held in accordance  with the  provisions of the
        Escrow Agreement until such claim or claims have been fully resolved and
        the balance of the partial release will be paid to Seller.

                (ii)  Provided no dispute or disputes in excess of an  aggregate
        of $2,000,000 (or $1,000,000, if that part of the Escrow Fund subject to
        Section 4(b) below has been released to Seller),  less the amount of any
        payments  theretofore  made in satisfaction of Seller's  indemnification
        and guaranty  obligations,  exist as to any Claim or Claims by any Buyer

<PAGE>

        Indemnitee  against  all or a portion of the  Escrow  Fund on the second
        anniversary of the Closing Date, then an additional $1,000,000, less the
        amount of any  payments  theretofore  made in  satisfaction  of Seller's
        indemnification and guaranty obligations,  will be released to Seller on
        the first business day following such second  anniversary of the Closing
        Date. To the extent such a dispute or disputes do exist as to a Claim or
        Claims on the second anniversary of the Closing Date, an amount equal to
        the  amount of such Claim or Claims  (or if the  precise  amount of said
        Claims  cannot  be  quantified,  then  Buyer's  reasonable,  good  faith
        estimate of the amount of the Claims) will be withheld from such partial
        release of the Escrow Fund and will  continue  to be held in  accordance
        with the provisions of the Escrow  Agreement  until such claim or claims
        have been fully resolved and the balance of the partial  release will be
        paid to Seller.

                (iii)  Provided no dispute or disputes  exist as to any Claim or
        Claims by any Buyer  Indemnitee  against  all or a portion of the Escrow
        Fund on the third anniversary of the Closing Date, then the remainder of
        the Escrow  Fund will be released  to Seller on the first  business  day
        following  such third  anniversary  of the  Closing  Date and the Escrow
        Agreement shall thereupon terminate. To the extent a dispute or disputes
        do exist as to a Claim or Claims on the third anniversary of the Closing
        Date,  an amount  equal to the amount of such Claim or Claims (or if the
        amount of said Claims  cannot be  quantified,  then Buyer's  reasonable,
        good faith  estimate of the amount of the Claims) will be withheld  from
        such partial  release of the Escrow Fund and will continue to be held in
        accordance with the provisions of the Escrow  Agreement until such claim
        or claims  have been  fully  resolved  and the  balance  of the  partial
        release will be paid to Seller.

                (b) Upon delivery to Buyer of Seller's  certificate  pursuant to
        the terms of Section 5.3.6 of the Purchase Agreement certifying that the
        Environmental  Remediation  has  been  completed,  an  amount  equal  to
        $1,000,000, less the sum of (i) the aggregate cost of such Environmental
        Remediation  (including the Estimated  Additional  Remediation Cost) and
        (ii) the aggregate amount of other Losses of all other Buyer Indemnitees
        subject  to  indemnification  pursuant  to Section  4.1 of the  Purchase
        Agreement in excess of $3,000,000, shall forthwith be released to Seller
        out of the Escrow Fund. In the event that such Environmental Remediation
        was not completed at the first  anniversary of the Closing Date,  Seller
        shall  deliver to Buyer a certificate  of  completion  thereof upon such
        completion   containing  a  statement  of  the  aggregate  cost  of  the
        Environmental Remediation effected following such first anniversary, and
        Buyer  shall  immediately  release to Seller out of the Escrow  Fund the
        amount,  if any,  which would have been released to Seller under Section
        5.3.6 of the Purchase  Agreement  following such first  anniversary  had
        such actual cost, rather than the Estimated Additional Remediation Cost,
        been used in such calculation.

5.      DUTIES OF ESCROW AGENT

                (a) Escrow  Agent shall not be under any duty to give the Escrow
        Fund held by it hereunder  any greater  degree of care than it gives its
<PAGE>

        own similar  property and shall not be required to invest any funds held
        hereunder  except as directed in this Agreement.  Uninvested  funds held
        hereunder shall not earn or accrue interest.

                (b) Escrow  Agent shall not be liable,  except for its own gross
        negligence  or willful  misconduct  and,  except with  respect to claims
        based  upon  such  gross  negligence  or  willful  misconduct  that  are
        successfully asserted against the Escrow Agent, the other parties hereto
        shall jointly and severally indemnify and hold harmless the Escrow Agent
        (and any  successor  to the Escrow  Agent)  from and against any and all
        losses,  liabilities,  claims, actions, damages and expenses,  including
        reasonable  attorneys'  fees and  disbursements,  arising  out of and in
        connection with this Agreement.  Without limiting the foregoing,  Escrow
        Agent shall in no event be liable in connection  with its  investment or
        reinvestment  of any  cash  held  by it  hereunder  in  good  faith,  in
        accordance with the terms hereof,  including,  without  limitation,  any
        liability  for any delays (not  resulting  from its gross  negligence or
        willful  misconduct)  in the  investment or  reinvestment  of the Escrow
        Fund, or any loss of interest incident to any such delays.

                (c)  Escrow  Agent  shall be  entitled  to rely upon any  order,
        judgment,  certification,  demand,  notice,  instrument or other writing
        delivered  to it  hereunder  without  being  required to  determine  the
        authenticity  or the  correctness  of any  fact  stated  therein  or the
        propriety  or validity of the service  thereof.  Escrow Agent may act in
        reliance upon any  instrument or signature  believed by it to be genuine
        and may assume that the person  purporting  to give receipt or advice or
        make any  statement  or execute  any  document  in  connection  with the
        provisions  hereof has been duly  authorized  to do so. Escrow Agent may
        conclusively  presume that the undersigned  representative  of any party
        hereto which is an entity other than a natural person has full power and
        authority  to  instruct  Escrow  Agent on  behalf of that  party  unless
        written notice to the contrary is delivered to Escrow Agent.

                (d) Escrow  Agent may act pursuant to the advice of counsel with
        respect to any matter relating to this Agreement and shall not be liable
        for any action taken or omitted by it in good faith in  accordance  with
        such advice.

                (e) Escrow  Agent does not have any  interest in the Escrow Fund
        deposited hereunder but is serving as escrow holder only and having only
        possession  thereof.  Any payments of income from this Escrow Fund shall
        be  subject to  withholding  regulations  then in force with  respect to
        United States taxes.  The parties  hereto will provide Escrow Agent with
        appropriate  Internal  Revenue Service Forms W-9 for tax  identification
        number certification, or non-resident alien certifications. This Section
        5(e)  and  Section  5(b)  hereof  shall  survive   notwithstanding   any
        termination of this Agreement or the resignation of Escrow Agent.


<PAGE>

                (f) Escrow  Agent makes no  representation  as to the  validity,
        value,  genuineness,  or the  collectability  of any  security  or other
        document or instrument held by or delivered to it.

                (g) Escrow Agent shall not be called upon to advise any party as
        to the wisdom in selling or retaining or taking or  refraining  from any
        action  with  respect  to any  securities  or other  property  deposited
        hereunder.

                (h) Escrow Agent (and any  successor to the Escrow Agent) may at
        any time resign as such by  delivering  the Escrow Fund to any successor
        Escrow Agent jointly  designated by the other parties hereto in writing,
        or to any court of competent jurisdiction,  whereupon Escrow Agent shall
        be  discharged  of and from any and all further  obligations  arising in
        connection  with this  Agreement.  The  resignation of Escrow Agent will
        take effect on the earlier of (a) the appointment of a successor  escrow
        agent (including a court of competent jurisdiction) or (b) the day which
        is 30  days  after  the  date  of  delivery  of its  written  notice  of
        resignation  to the other parties  hereto.  If at that time Escrow Agent
        has not  received a  designation  of a successor  Escrow  Agent,  Escrow
        Agent's  sole  responsibility  after  that time  shall be to retain  and
        safeguard the Escrow Fund until  receipt of a  designation  of successor
        Escrow Agent or a joint  written  disposition  instruction  by the other
        parties hereto or a final  non-appealable  order of a court of competent
        jurisdiction.

                (i) In the event of any  disagreement  between the other parties
        hereto  resulting in adverse  claims or demands being made in connection
        with the Escrow Fund or in the event that Escrow Agent is in doubt as to
        what action it should take hereunder,  Escrow Agent shall be entitled to
        retain the Escrow  Fund until  Escrow  Agent shall have  received  (i) a
        final  non-appealable  order  of  a  court  of  competent   jurisdiction
        directing  delivery  of the  Escrow  Fund  or (ii) a  written  agreement
        executed by the other parties  hereto  directing  delivery of the Escrow
        Fund,  in which event  Escrow  Agent shall  disburse  the Escrow Fund in
        accordance  with  such  order or  agreement.  Any court  order  shall be
        accompanied  by a legal  opinion by  counsel  for the  presenting  party
        satisfactory  to Escrow  Agent to the effect that the order is final and
        non-appealable.  Escrow  Agent  shall act on such court  order and legal
        opinion without further question.

                (j) Buyer and Seller  shall pay Escrow  Agent  compensation  (as
        payment  in full)  for the  services  to be  rendered  by  Escrow  Agent
        hereunder in the amount of  $_________  at the time of execution of this
        Agreement and $_____________  annually thereafter and agree to reimburse
        Escrow Agent for all  reasonable  expenses,  disbursements  and advances
        incurred or made by Escrow Agent in performance of its duties  hereunder
        (including  reasonable fees, expenses and disbursements of its counsel).
        Any  such  compensation  and  reimbursement  to  which  Escrow  Agent is
        entitled shall be evenly split by Buyer and Seller.


<PAGE>

                (k) No  printed  or other  matter  in any  language  (including,
        without  limitation,  prospectuses,  notices,  reports  and  promotional
        material) that mentions  Escrow Agent's name or the rights,  powers,  or
        duties of Escrow Agent shall be issued by the other parties hereto or on
        such  parties'  behalf  unless  Escrow  Agent shall first have given its
        specific written consent thereto.

                (l) The other parties  hereto  authorize  Escrow Agent,  for any
        securities  held  hereunder,  to use the  services of any United  States
        central   securities   depository  it  reasonably   deems   appropriate,
        including,  without  limitation,  the  Depositary  Trust Company and the
        Federal Reserve Book Entry System.

6.      LIMITED RESPONSIBILITY

        This Agreement  expressly sets forth all the duties of Escrow Agent with
respect  to  any  and  all  matters  pertinent  hereto.  No  implied  duties  or
obligations shall be read into this Agreement against Escrow Agent. Escrow Agent
shall not be bound by the  provisions of any  agreement  among the other parties
hereto except this Agreement.

7.      OWNERSHIP FOR TAX PURPOSES

        Seller  agrees  that,  for  purposes of federal and other taxes based on
income,  Seller will be treated as the owner of the Escrow Fund, and that Seller
will report all income,  if any, that is earned on, or derived from,  the Escrow
Fund as its income in the taxable year or years in which such income is properly
includible and pay any taxes attributable thereto.

8.      NOTICES

        All  notices,  consents,  waivers  and other  communications  under this
Agreement must be in writing and will be deemed to have been duly given when (a)
delivered by hand (with written confirmation of receipt), (b) sent by telecopier
(with written  confirmation of receipt),  or (c) when received by the addressee,
if  sent  by  a  nationally   recognized  overnight  delivery  service  (receipt
requested), in each case to the appropriate addresses and telecopier numbers set
forth below (or to such other  addresses and  telecopier  numbers as a party may
designate by notice to the other parties):

        Seller:

        Valley Systems, Inc.
        Valley Systems of Ohio, Inc.
        11580 Lafayette Drive, NW
        Canal Fulton, Ohio 44614
        Attention: Chief Executive Officer
        Facsimile No.: (330) 854-3444
<PAGE>

        with a copy to:

        Arnall Golden & Gregory, LLP
        2800 One Atlantic Center
        1201 West Peachtree Street
        Atlanta, Georgia 30309
        Attention: Jonathan Golden
        Facsimile No.: (404) 873-8701

        Buyer:

        HydroChem Industrial Services, Inc.
        5956 Sherry Lane
        Suite 930
        Dallas, Texas 75225
        Attention: Chief Executive Officer
        Facsimile No.: (214) 361-4715

        with a copy to:

        Haynes and Boone, LLP
        600 Congress Avenue
        Suite 1600
        Austin, Texas 78701
        Attention: Dennis R. Cassell
        Facsimile No.:  (512) 867-8470


        Escrow Agent:

        Bank One Texas, N.A.
        Attention:
        Facsimile No.:

        with a copy to:

        Attention:
        Facsimile No.:
<PAGE>

9.      JURISDICTION; SERVICE OF PROCESS

        Any action or  proceeding  seeking to enforce any provision of, or based
on any right arising out of, this  Agreement  may be brought  against any of the
parties in the courts of the State of Texas,  County of Dallas, or, if it has or
can acquire  jurisdiction,  in the United States District Court for the Northern
District of Texas,  and each of the parties consents to the jurisdiction of such
courts  (and  of the  appropriate  appellate  courts)  in  any  such  action  or
proceeding and waives any objection to venue laid therein. Process in any action
or proceeding  referred to in the preceding  sentence may be served on any party
anywhere in the world.

10.     COUNTERPARTS

        This  Agreement  may be  executed in one or more  counterparts,  each of
which will be deemed to be an original  and all of which,  when taken  together,
will be deemed to constitute one and the same.

11.     SECTION HEADINGS

        The headings of sections in this Agreement are provided for  convenience
only and will not affect its construction or interpretation.

12.     WAIVER

        The rights and remedies of the parties to this  Agreement are cumulative
and  not  alternative.  Neither  the  failure  nor any  delay  by any  party  in
exercising any right,  power, or privilege under this Agreement or the documents
referred to in this Agreement will operate as a waiver of such right,  power, or
privilege,  and no single or  partial  exercise  of any such  right,  power,  or
privilege will preclude any other or further  exercise of such right,  power, or
privilege  or the  exercise of any other  right,  power,  or  privilege.  To the
maximum extent permitted by applicable law, (a) no claim or right arising out of
this Agreement or the documents  referred to in this Agreement can be discharged
by one party,  in whole or in part, by a waiver or  renunciation of the claim or
right  unless in writing  signed by the other  party;  (b) no waiver that may be
given by a party will be applicable except in the specific instance for which it
is given;  and (c) no  notice  to or demand on one party  will be deemed to be a
waiver of any  obligation of such party or of the right of the party giving such
notice or demand to take further  action without notice or demand as provided in
this Agreement or the documents referred to in this Agreement.

13.     EXCLUSIVE AGREEMENT AND MODIFICATION

        This Agreement  supersedes all prior  agreements  among the parties with
respect to its subject matter and constitutes (along with the documents referred
to in this  Agreement)  a complete and  exclusive  statement of the terms of the
agreement between the parties with respect to its subject matter. This Agreement

<PAGE>


may not be amended  except by a written  agreement  executed  by the Buyer,  the
Seller and the Escrow Agent.

14.     GOVERNING LAW

        This  Agreement  shall be  governed  by the laws of the  State of Texas,
without regard to conflicts of law principles.

                                   * * * * * *

<PAGE>


        IN WITNESS  WHEREOF,  the  parties  have  executed  and  delivered  this
Agreement as of the date first written above.


HYDROCHEM INDUSTRIAL                   VALLEY SYSTEMS, INC.
SERVICES, INC.


By:______________________________      By:______________________________________
   B. Tom Carter, Jr.                     Ed Strickland
   Chairman of the Board and              President and Chief Executive Officer
   Chief Executive Officer


BANK ONE TEXAS, N.A.                   VALLEY SYSTEMS OF OHIO, INC.


By:______________________________      By:______________________________________
                                          Ed Strickland
Name:____________________________         President and Chief Executive Officer
Officer:_________________________
Title:___________________________



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