Document:

<PAGE>
                                                                     EXHIBIT 4.3

                              AMENDMENT NUMBER TWO
                       TO THE ALLIANCE GAMING CORPORATION
                          2001 LONG-TERM INCENTIVE PLAN

        WHEREAS, the Company has adopted the Alliance Gaming Corporation 2001
Long Term Incentive Plan (the "Plan") which plan was approved by the
shareholders of the Company on December 11, 2001; and

        WHEREAS, the Company has determined that various technical amendments
should be made to the Plan; and

        WHEREAS, the Company is authorized to amend the Plan pursuant to Section
17 thereof.

        NOW, THEREFORE, the Plan is hereby amended as follows:

        1.     Section 4 of the Plan is hereby amended by replacing existing
Section 4 in its entirety with the following:

                      "4. ELIGIBILITY Awards may be granted under the Plan to
               paid consultants, directors and employees of the Company or a
               Subsidiary designated by the Board or the Committee, provided
               that Incentive Stock Options may be awarded only to regular
               full-time employees of the Company or a Subsidiary (including
               employees who serve as officers or directors). As used in the
               Plan, "paid consultant" means a natural person who is an
               independent contractor retained to perform continuing and
               substantial services for the Company or any subsidiary, and
               designated as a paid consultant by the Board or the Committee,
               except that no individual shall be designated a "paid consultant"
               for purposes of this Plan if such individual is engaged in
               promoting or maintaining a market in the securities of the
               Company, or in any other capacity that would result in the Form
               S-8 registration statement being ineffective as to any Awards
               made to such individual. Any person granted an Award under the
               Plan (a "Grantee") remains eligible to receive one or more
               additional grants thereafter, notwithstanding that options or
               Stock Appreciation Rights previously granted to such person
               remain unexercised in whole or in part, or that the applicable
               restrictions on any restricted stock issued to such person have
               not lapsed."

        2.     The Plan is further amended by adding the following paragraph to
the end of existing Section 10:

               "Incentive Stock Options. Notwithstanding anything herein to the
               contrary or the provisions of any employment agreement, no
               Incentive Stock Option shall be

<PAGE>

               exercisable after the date that is (a) in the case of the
               Grantee's termination of employment for any reason other than
               death or disability, three months following such termination of
               employment, or (b) in the case of the Grantee's termination of
               employment due to death or Total and Permanent Disability (as
               defined in Code section 22(e)(3)), twelve months following such
               termination of employment."

        3.     The Plan is further amended by adding the following sentence to
the end of existing Section 12 thereof:

               "Notwithstanding the foregoing, to the extent that the aggregate
               fair market value of stock (determined at the time of grant of
               the option) for which Incentive Stock Options first become
               exercisable by a Grantee during a calendar year (under all option
               plans of the Company) exceeds $100,000, such Options shall be
               treated as Options that are not Incentive Stock Options."

        Executed this 9th day of January, 2002, to be effective as of the date
hereof.

                                         ALLIANCE GAMING CORPORATION

                                         By: /s/ Mark Lerner
                                             -----------------------------------
                                             Mark Lerner
                                             Senior Vice President and Secretary<PAGE>
                                                                   EXHIBIT 10.33

                          TWELFTH AMENDMENT AND WAIVER

                                       TO

                      AMENDED AND RESTATED CREDIT AGREEMENT

           THIS TWELFTH AMENDMENT AND WAIVER TO AMENDED AND RESTATED CREDIT
AGREEMENT (the "AGREEMENT") is being executed and delivered as of September 30,
2001, by and among Waterlink, Inc., a Delaware corporation (the "COMPANY"), the
"Banks" party to and as defined in the "Credit Agreement" referred to below (the
"BANKS") and Bank of America, N.A. in its capacities as "Agent" for the Banks
under the Credit Agreement and "Collateral Agent" for the Banks pursuant to the
Collateral Documents (the "AGENT"). Capitalized terms used herein and not
defined herein shall have the meanings ascribed to such terms as set forth in
the Credit Agreement referred to and defined below.

                              W I T N E S S E T H:

           WHEREAS, the Company, the Banks and the Agent are parties to that
certain Amended and Restated Credit Agreement dated as of June 27, 1997, as
amended and restated as of February 11, 2000, as further amended (the "CREDIT
AGREEMENT"), pursuant to which the Banks have agreed, subject to the terms and
conditions set forth therein, to extend credit to the Company;

           WHEREAS, the Company (i) has failed to make the Scheduled Repayments
of principal due and payable with respect to the Term Loans on August 31, 2001
and on the Term Maturity Date resulting in Events of Default under SECTION
9.01(a) of the Credit Agreement, (ii) has failed to repay the aggregate
outstanding principal amount of the Revolving Loans on the Revolving Termination
Date, in each case resulting in Events of Default under SECTION 9.01 (a) of the
Credit Agreement, (iii) failed to cause to be executed and delivered on or
before June 15, 2001 blocked account and lockbox account agreements with respect
to each depository, collection and concentration account maintained by the
Company as required by SECTION 7.14(e) resulting in an Event of Default under
SECTION 9.01(c) and (iv) failed to diligently pursue, and take material steps
toward achieving, sales or other dispositions of all or substantially all of its
Remaining Business Units other than its Pure Water business unit as required by
SECTION 7.16 resulting in an Event of Default under SECTION 9.01(c)
(collectively, the "EXISTING DEFAULTS"); and

           WHEREAS, the Company has requested that the Banks waive the Existing
Defaults and extend the Term Maturity Date and Revolving Termination Date and,
subject to the terms and conditions of this Agreement, the Banks have agreed to
such requests.

           NOW, THEREFORE, in consideration of the foregoing premises, the terms
and conditions stated herein and other valuable consideration, the receipt and
sufficiency of which is hereby acknowledged by the Company, the Banks and the
Agent, such parties hereby agree as follows:

<PAGE>

           SECTION 1. AMENDMENT TO CREDIT AGREEMENT. Subject to the satisfaction
of each of the conditions set forth in SECTION 3 of this Agreement, the Credit
Agreement is hereby amended as follows (unless otherwise specified, section,
article, exhibit and schedule references refer to sections, articles, exhibits
and schedules of the Credit Agreement):

           (a) SECTION 1.01 is amended to delete, in its entirety, CLAUSE (ii)
of the second PROVISO of the definition of "APPLICABLE MARGIN" and to replace
such clause with the following provisions:

         (ii) effective from April 30, 2001 to September 30, 2001, the
         Applicable Margin shall be, notwithstanding the Level in effect at any
         time, 3.00% with respect to Base Rate Loans, and (iii) effective from
         and after October 1, 2001, the Applicable Margin shall be,
         notwithstanding the Level in effect at any time, 3.50% with respect to
         Base Rate Loans.

           (b) SECTION 1.01 is amended to delete the definition of "INTEREST
COVERAGE RATIO" and to replace such definition with the following definition:

                      "INTEREST COVERAGE RATIO" means, with respect to any
           period, the ratio of EBITDA to Consolidated Interest Expense.

           (c) SECTION 1.01 is further amended to delete the date "October 1,
2001" set forth in each of the definitions of "LIQUIDITY DATE," "REVOLVING
TERMINATION DATE," "SWING LINE TERMINATION DATE" and "TERM MATURITY DATE" and to
replace each such date with the date "January 15, 2002."

           (d) SECTION 1.01 is further amended to add the following new
definitions in their respective alphabetical locations:

                      "TWELFTH AMENDMENT" means the Twelfth Amendment and Wavier
           to this Agreement dated as of October 1, 2001.

                      "TWELFTH AMENDMENT EFFECTIVENESS DATE" means the date upon
           which the Agent advised the Company that the Twelfth Amendment has
           become effective.

           (e) SECTION 1.01 is further amended to delete the definition of
"EBITDA" in its entirety and to replace such definition with the following
definition:

                      "EBITDA" means, for any period of determination for the
           Company and its Subsidiaries, determined in accordance with GAAP, the
           sum of, without duplication, (a) Net Income for such period, plus (b)
           all amounts treated as expenses for depreciation and interest and the
           amortization of intangibles of any kind to the extent included in the
           determination of such Net Income, plus (c) all accrued taxes on or
           measured by income to the extent included in the determination of
           such Net Income; PROVIDED, HOWEVER, that Net Income shall be computed
           for these purposes without giving effect to (i) extraordinary losses
           or extraordinary gains, (ii) gains or losses with respect to the sale
           or other disposition of all or substantially all, or any substantial
           part, of any of the Remaining Business Units, (iii) charges, not to
           exceed $2,400,000 in the aggregate, for downsizing of the Company's
           corporate staff (including severance obligations) and closing its

                                       2
<PAGE>

           Cleveland, Ohio corporate offices, or (iv) bank fees incurred
           pursuant to or in connection with this Agreement (other than
           Commitment Fees and fees charged hereunder with respect to Letters of
           Credit).

           (f) SECTION 2.04 is amended to delete both references in such section
to the term "Swing Line Termination Date" and to replace such references with
references to the term "Twelfth Amendment Effective Date."

           (g) SECTION 2.09(b) is amended to add the following provision to the
end of CLAUSE (II) thereof:

           ; PROVIDED, HOWEVER, THAT, if the Company shall consummate a
           Disposition of the Company's Pure Water business unit on or before
           the Company's payment of the Scheduled Repayment due November 30,
           2001 (subject to the written approval of the requisite Banks as
           provided in this Agreement), the Net Proceeds with respect to such
           Disposition shall be applied first to prepay such Scheduled Repayment
           and otherwise shall be applied pursuant to the foregoing provisions.

           (h) SECTION 2.10(a)(i) is deleted in its entirety and replaced with
the following provision:

           On each date set forth below, the Company shall be required to repay
           the principal amount (or such other amount after giving effect to any
           prepayments permitted or required pursuant to this Agreement) of the
           Term Loans as is set forth opposite such date (each, a "Scheduled
           Repayment"):

                                    Date                          Amount

                           October 31, 2001                        $50,000
                           November 30, 2001                    $2,000,000
                           December 31, 2001                       $50,000
                           Term Maturity Date                  $11,067,250.06

           (i) SECTION 2.11(b) is amended to delete the PROVISO at the end of
such section and to replace such PROVISO with the following provision:

           ; PROVIDED, HOWEVER, that, on the Interest Payment Date occurring on
           May 31, 2001 and on each Interest Payment Date occurring thereafter
           through and including the first Interest Payment Date occurring on or
           after the date on which the outstanding principal balance of the Term
           Loans are repaid in full, the Company shall be obligated to make cash
           payments of interest accrued hereunder with respect to each Loan as
           if such Loans only accrued interest at a per annum rate equal to the
           Base Rate plus 2.00%, with the remaining interest actually accruing
           hereunder with respect to such Loans being due and payable in full in
           cash on the each Liquidity Date occurring after May 31, 2001, on the
           Revolving Termination Date and on the date of acceleration of the
           Company's obligations under SECTION 9.02, in each case to the extent
           such remaining interest has been accrued and is unpaid through each
           such date.

                                       3
<PAGE>

           (j) SECTION 2.12(d) and SECTION 2.12(e) are deleted in their entirety
and replaced with the following provision:

                      (d) TWELFTH AMENDMENT FEE. On the earliest to occur of the
           first Liquidity Date following the Twelfth Amendment Effectiveness
           Date, the acceleration of the Company's obligations pursuant to
           SECTION 9.02, and the Revolving Termination Date, the Company shall
           pay to the Agent in cash or other immediately available funds, for
           distribution to each Bank based on its Pro Rata Share, an amendment
           fee in an aggregate amount equal to 0.50% of the sum of the aggregate
           Revolving Loan Commitments plus the aggregate outstanding principal
           balance of the Term Loans as of November 15, 2001, unless such
           Liquidity Date shall have occurred on or prior to November 15, 2001
           in which case such sum and fee shall be computed as of such Liquidity
           Date (and after giving effect to any reduction of such sum occurring
           on such Liquidity Date).

           (k) SECTION 7.14(e) is deleted in its entirety and replaced with the
following provision:

                      (e) On or before June 15, 2001, the Company will execute
           and deliver, and cause to be executed and delivered, in favor of the
           Agent and the Banks, blocked account and lockbox account agreements,
           in form and substance acceptable to the Agent, with respect to each
           depository, collection and concentration account maintained by the
           Company and each of the Domestic Subsidiaries (other than those
           accounts maintained by Domestic Subsidiaries comprising the Company's
           Pure Water business unit (as to which accounts the Company shall use
           all reasonable efforts to promptly obtain such agreements and in any
           event on or before November 30, 2001) and other than those determined
           by the Agent to be immaterial), pursuant to which the Agent would
           have the right, following the occurrence and during the continuation
           of any Event of Default, to require that all collections received by
           the depositories with respect to such accounts shall be maintained in
           such accounts or transferred (on a daily basis) to the Agent, for
           application to Loans, L/C Obligations and other obligations of the
           Company or the Domestic Subsidiaries pursuant to this Agreement or
           the other Loan Documents, in any such case pursuant to the Agent's
           exclusive instructions.

           (l) SECTION 7.16 is deleted in its entirety and replaced with the
following provision:

                      7.16 STRATEGIC ALTERNATIVE PROCESS. The Company shall
           diligently pursue, and take material steps toward achieving, sales or
           other dispositions of all or substantially all of its Pure Water
           business unit, including, without limitation, by preparing and
           distributing offering materials with respect to the sale of such Pure
           Water business unit, facilitating advisors of the Company in making
           contact with potential purchasers in their due diligence processes
           with respect thereto, and preparing and negotiating transaction
           documents with respect thereto. The Company shall provide the Agent
           with bi-weekly written reports (in form and scope acceptable to the
           Agent), with the first of such reports due on June 30, 2001,
           describing the status of its progress in pursuing, and actions it has

                                       4
<PAGE>

           taken and is planning on taking toward achieving, sales or other
           dispositions of all or substantially all of its Pure Water business
           unit.

           (m) ARTICLE VII is further amended to add the following new section
to the end of such article:

                      7.17. REFINANCING STATUS REPORTING. On the 15th and 30th
           calendar day of each calendar month ending after the Twelfth
           Amendment Effectiveness Date (or if any such day is not a Business
           Day, on the next succeeding Business Day), the Company will provide
           the Agent and each Bank with a detailed written explanation of the
           status of the Company's efforts to refinance or repay the Loans and
           other obligations to the Banks in full, and on the 30th calendar day
           of each such calendar month (or next Business Day if such day is not
           a Business Day), the Company will host a telephone conference call
           with the Banks to provide the Banks with an oral explanation of the
           status of such efforts. One or more members of the Company's senior
           management and board of directors shall participate in each such
           teleconference.

                      7.18. ASSET BASED MONITORING PROVISIONS. At any time
           following the consummation of the Company's Disposition of its Pure
           Water business unit (and subject to written consent thereto by the
           Banks required to approve such Disposition pursuant to this
           Agreement), at the Majority Banks' option, the Borrower shall execute
           and deliver an amendment to this Agreement, in form, scope and
           substance acceptable to the Majority Banks and the Agent and the
           Company, providing for the Banks' financial accommodations and
           outstandings hereunder to be treated and monitored in a manner
           consistent with the Agent's customary practices for asset-based
           loans, which amendment would provide (a) a limitation upon the
           aggregate amount of Loans and L/C Obligations permitted to remain
           outstanding hereunder based on the realizable value of the Company's
           eligible Collateral plus an amount to be agreed upon over and above
           such realizable value, and subject to discretionary eligibility
           criteria, advance rates, reserves, and appropriate over advance
           amounts, (b) a requirement that all cash collections and other
           receipts of the Company be deposited into one or more blocked
           accounts and concentration accounts subject to agreements in favor of
           the Agent and with respect to which all available balances would be
           wired directly to the Agent on a daily basis for application to the
           outstanding Loans and L/C Obligations (which may be reborrowed as
           Revolving Loans subject to the terms and conditions of the Agreement
           as so amended), and (c) periodic borrowing base and other Collateral
           reporting.

           (n) SECTIONS 8.16 and 8.17 are deleted in their entirety and replaced
with the following provisions:

                      8.16. INTEREST COVERAGE RATIO. The Company shall not
           permit its Interest Coverage Ratio, for any three calendar month
           period ending on the last day of any calendar month ending on or
           after October 31, 2001, to be less than 1.25 to 1.00.

           (o) EXHIBIT C is deleted in its entirety and replaced with the
exhibit attached hereto as ANNEX 1 to this Agreement.

                                       5
<PAGE>

                  SECTION 2. WAIVER. Subject to the satisfaction of the
conditions set forth in SECTION 3 of this Agreement, the Banks hereby waive each
of the Existing Defaults.

                  SECTION 3. EFFECTIVENESS OF THE AMENDMENT AND WAIVER;
CONDITIONS PRECEDENT. The provisions of SECTIONS 1 and 2 of this Agreement shall
become effective as of the date hereof upon the Agent's receipt of each of the
following:

                  (a) originally-executed (or facsimiles of originally-executed)
         counterparts of this Agreement executed and delivered by duly
         authorized officers of the Company, each Guarantor and each of the
         Banks;

                  (b) evidence satisfactory to the Agent that the subordinated
         notes described in Annex A to the Tenth Amendment have been modified,
         in a manner acceptable to the Agent, to extend the maturity date and
         all remaining principal payments due thereunder to a date not earlier
         that January 31, 2002; and

                  (c) payment in full of the fees and expenses described in
         SECTION 6(c) hereof, to the extent invoices with respect thereto are
         delivered to the Company prior to the satisfaction of the other
         conditions described in this section.

                  SECTION 4. REPRESENTATIONS AND WARRANTIES. The Company and
each Guarantor hereby represents and warrants that (a) this Agreement
constitutes its legal, valid and binding obligation, enforceable against each
such party in accordance with its terms and (b) there is no consent, approval or
other requirement known to the Company or such Guarantor which could reasonably
be expected to impair or materially delay the Company's or such Guarantor's
ability to perform its obligations under this Agreement or the Credit Agreement
as proposed to be amended hereby and (c) after giving effect to the provisions
of SECTION 2 hereof, no Default or Event of Default will be continuing.

                  SECTION 5. REAFFIRMATION, RATIFICATION AND ACKNOWLEDGMENT. (a)
The Company and each of the Guarantors hereby (i) ratifies and reaffirms all of
its payment and performance obligations, contingent or otherwise, and each grant
of security interests and liens in favor of the Agent, under each Loan Document
to which it is a party, (ii) agrees and acknowledges that such ratification and
reaffirmation is not a condition to the continued effectiveness of such Loan
Documents, and (iii) agrees that neither such ratification and reaffirmation,
nor the Agent's nor any Banks' solicitation of such ratification and
reaffirmation, constitutes a course of dealing giving rise to any obligation or
condition requiring a similar or any other ratification or reaffirmation from
the Company or the Guarantors with respect to any subsequent modifications
consent or waiver with respect to the Credit Agreement or other Loan Documents.
The Credit Agreement and each other Loan Document is in all respects hereby
ratified and confirmed and, except as is expressly set forth in SECTION 2
hereof, neither the execution, delivery nor effectiveness of this Agreement
shall operate as a waiver of any Default or Event of Default (whether or not
known to the Agent, the Collateral Agent or any Bank) or any right, power or
remedy of the Agent, the Collateral Agent or any Bank of any provision contained
in the Credit Agreement or any other Loan Document, whether as a result of any
Default or Event of Default or otherwise. This Agreement shall constitute a
"Loan Document" for purposes of the Credit Agreement.

                                       6
<PAGE>

                  (b) The Company and each of the Guarantors hereby acknowledges
and confirms that (i) it does not have any grounds, and hereby agrees not to
challenge (or to allege or to pursue any matter, cause or claim arising under or
with respect to), in any case based upon acts or omissions of the Agent or any
of the Banks occurring prior to the date hereof or facts otherwise known to it
as of the date hereof, the effectiveness, genuineness, validity, collectibility
or enforceability of the Credit Agreement or any of the other Loan Documents,
the Obligations, the Liens securing such Obligations, or any of the terms or
conditions of any Loan Document (it being understood that such acknowledgement
and confirmation does not preclude the Company or the Guarantors from
challenging the Agent's or any Bank's interpretation of any term or provision of
the Credit Agreement or other Loan Document) and (ii) it does not possess (and
hereby forever waives, remises, releases, discharges and holds harmless the
Banks, the Agent and their respective affiliates, stockholders, directors,
officers, employees, attorneys, agents and representatives and each of their
respective heirs, executors, administrators, successors and assigns
(collectively, the "INDEMNIFIED PARTIES") from and against, and agrees not to
allege or pursue) any action, cause of action, suit, debt, claim, counterclaim,
cross-claim, demand, defense, offset, opposition, demand and other right of
action whatsoever, whether in law, equity or otherwise (which it, all those
claiming by, through or under it, or its successors or assigns, have or may
have) against the Indemnified Parties, or any of them, by reason of, any matter,
cause or thing whatsoever, with respect to events or omissions occurring or
arising on or prior to the date hereof and relating to the Credit Agreement or
any of the other Loan Documents (including, without limitation, with respect to
the payment, performance, validity or enforceability of the Obligations, the
Liens securing the Obligations or any or all of the terms or conditions of any
Loan Document) or any transaction relating thereto; PROVIDED, HOWEVER, THAT
neither the Company nor any Guarantor hereby releases or holds harmless any
Indemnified Party for actions or omissions by any such Indemnified Party
constituting, or losses or expenses directly resulting from, the gross
negligence or willful misconduct of such Indemnified Party.

                  SECTION 6. MISCELLANEOUS.

                  (a) EXECUTION IN COUNTERPARTS; GOVERNING LAW This Agreement
may be executed in any number of counterparts and by different parties hereto in
separate counterparts, each of which when so executed and delivered shall be
deemed to be an original and all of which when taken together shall constitute
but one and the same instrument. This Agreement shall be governed by and
construed in accordance with the laws of the State of Illinois.

                  (b) SECTION TITLES. The section titles contained in this
Agreement are and shall be without substance, meaning or content of any kind
whatsoever and are not a part of the agreement between the parties hereto.

                  (c) AGENT'S EXPENSE. The Company hereby agrees to promptly
reimburse the Agent for all reasonable out-of-pocket expenses, including,
without limitation, attorneys' and paralegals fees, field exam fees and expenses
and consultants fees and expenses, it has heretofore or hereafter incurred or
incurs in connection with the preparation, negotiation, administration and
execution of the Loan Agreement, this Agreement or any document, instrument,
agreement delivered pursuant to the Loan Agreement or this Agreement.

                                     * * * *

                                       7
<PAGE>

                  IN WITNESS WHEREOF, the parties hereto have caused this
Agreement to be executed by their respective officers thereunto duly authorized
as of the date first above written.

WATERLINK, INC.
WATERLINK MANAGEMENT, INC.
WATERLINK SEPARATIONS, INC.
WATERLINK BIOLOGICAL WASTEWATER SYSTEMS, INC.
WATERLINK TECHNOLOGIES, INC.
BARNEBEY & SUTCLIFFE CORPORATION (a/k/a Barnebey Sutcliffe Corporation)
C'TREAT OFFSHORE, INC. (f/k/a Chemitreat Services, Inc.)
WATERLINK N.S., INC.

By: /s/ Mark E. Brody
    ------------------
Name:
Title: Chief Financial Officer

                                SIGNATURE PAGE TO
                          TWELFTH AMENDMENT AND WAIVER
                         Dated as of September 30, 2001

<PAGE>

                           BANK OF AMERICA, N.A., as Agent and Collateral
                           Agent

                           By: /s/ Kristine D. Hyde
                               ---------------------------------------------

                           Title: Vice President
                                  ------------------------------------------

                           BANK OF AMERICA, N.A., Individually as a Bank and as
                           Issuing Bank

                           By: /s/ Thomas E. Czerwinski
                               ---------------------------------------------

                           Title: Vice President
                                  ------------------------------------------

                           COMERICA BANK

                           By: /s/ Preeti Sarnaik
                               ---------------------------------------------

                           Title: Assistant Vice President
                                  ------------------------------------------

                           FIFTH THIRD BANK, CENTRAL OHIO

                           By: /s/ David Peura
                               ---------------------------------------------

                           Title: Assistant Vice President
                                  ------------------------------------------

                           HARRIS TRUST AND SAVINGS BANK

                           By: /s/ Michael J. Johnson
                               ---------------------------------------------

                           Title: Managing Director
                                  ------------------------------------------

                           PNC BANK, NATIONAL ASSOCIATION

                           By: /s/ James B. Horan
                               ---------------------------------------------

                           Title: Vice President
                                  ------------------------------------------

                           UNION BANK OF CALIFORNIA, N.A.

                           By: /s/ Christiana Creekpaum
                               ---------------------------------------------

                           Title: Vice President
                                  ------------------------------------------

                                SIGNATURE PAGE TO
                          TWELFTH AMENDMENT AND WAIVER
                         Dated as of September 30, 2001

<PAGE>

                                                                         ANNEX 1
                                                                         -------

                             Compliance Certificate
                             ----------------------

                                    Attached.

<PAGE>

                                    EXHIBIT C

                         FORM OF COMPLIANCE CERTIFICATE
                         ------------------------------

Bank of America, N.A., as Agent
for the Banks party to the Credit
Agreement referred to below
231 South LaSalle Street
Chicago, Illinois  60697

Attention:  ________________

Ladies and Gentlemen:

                  This certificate is furnished to you by Waterlink, Inc. (the
"COMPANY"), pursuant to Section 7.02(b) of that certain Amended and Restated
Credit Agreement, dated as of June 27, 1997 and as amended and restated as of
May 19, 1998, among the Company, the financial institutions party thereto (the
"BANKS"), and Bank of America National Trust and Savings Association, as agent
for such Banks (as the same has been heretofore and may be hereafter further
amended, restated, supplemented or otherwise modified from time to time, the
"CREDIT AGREEMENT"), concurrently with the delivery of the financial statements
required pursuant to Section 7.01 of the Credit Agreement. Terms not otherwise
defined herein are used herein as defined in the Credit Agreement.

                  The undersigned, on behalf of the Company, hereby certifies
that:

                  (A) no Default or Event of Default has occurred and is
continuing, except as described in Attachment 1 hereto;

                  (B) the financial data and computations set forth in Schedule
1 below, evidencing compliance with the covenants set forth in Sections 8.01(i)
and (j), 8.05(d), (f) and (g), 8.15, 8.17 and 8.20 of the Credit Agreement, are
true and correct as of _____________, ____(1) (the "COMPUTATION DATE"); and

                  (C) if the financial statements of the Company being
concurrently delivered were not prepared in accordance with GAAP, Attachment 2
hereto sets forth any derivations required to conform the relevant data in such
financial statements to the computations set forth below.

--------------------------
(1) The last day of the accounting period for which financial statements are
being concurrently delivered.

<PAGE>

                  The foregoing certifications, together with the computations
set forth in Schedule 1 hereto and the financial statements delivered with this
Compliance Certificate in support hereof, are made and delivered as of this
_____ day of _____________, _____.

                                        WATERLINK, INC.

                                        By: _____________________________
                                              Name: _______________________
                                              Its:__________________________(2)

---------------------------
(2) To be executed by a Responsible Officer of the Company.

                                       2
<PAGE>

                                   SCHEDULE 1
                                   ----------

                                  COMPUTATIONS
                                  ------------

I.       Section 8.01 Liens
         ------------------

A.       Clause (i)
         ----------

<TABLE>
<S>                                                                             <C>
1. Aggregate amount of obligations permitted to be secured:                     $1,000,000

2. Actual amount of obligations secured as of the date of determination:        $________

B.       Clause (j)
         ----------

1. Aggregate amount of obligations permitted to be secured:                     $1,000,000

2. Actual amount of obligations secured as of the date of determination:        $________

II.      Section 8.05 Indebtedness
         -------------------------

A.       Clause (d)
         ----------

1. Aggregate principal amount of Indebtedness permitted:                        $2,000,000

2. Actual amount of Indebtedness as of the date of determination
(including Indebtedness securing Liens permitted pursuant
         to Section 8.01(i) and (j)):                                           $________

B.       Clause (f)
         ----------

1. Aggregate principal amount of Indebtedness permitted:                        $6,500,000

2. Actual amount of Indebtedness as of the date of determination:               $________

</Table>

<PAGE>

<TABLE>
<S>     <C>                                                                     <C>
B.       Clause (g)
         ----------

1. Aggregate principal amount of Indebtedness permitted:                        $10,000,000

2. Actual amount of Indebtedness as of the date of determination:               $_________

III.     Section 8.15 Collateral Value to Debt Ratio
         -------------------------------------------

1.       Date of Determination: ____________, ____.

2.  Required:                                                                   0.50 to 1.00

3.  Actual:

         (a)      net accounts receivable                     $____________

         (b)      inventory                                   $____________

         (c)      costs in excess of billings                 $____________

         (d)      sum of (a) through (c)                      $____________

         (e)      outstanding Loans                           $____________

         (f)      L/C Obligations in excess of $465,072       $____________

         (g)      sum of (e) and (f)                          $____________

         (h)      ratio of (d) to (g)                                           ____ to 1.00.

IV.      Section 8.17 Interest Coverage Ratio
         ------------------------------------

1.       Three months ending: ____________, ____.

2.  EBITDA for such period:                                                     $__________

3.  Consolidated Interest Expense for such period:                              $__________

4.  Ratio of (2) to (1):                                                        ___  to 1.00

5.  Required:                                                                   1.25 to 1.00
</TABLE>

                                       2
<PAGE>

                                  ATTACHMENT 1
                                  ------------

                DESCRIPTION OF ANY DEFAULTS OR EVENTS OF DEFAULT
                ------------------------------------------------

<PAGE>

                                  ATTACHMENT 2
                                  ------------

           DERIVATIONS REQUIRED TO CONFORM RELEVANT DATA IF FINANCIAL
              STATEMENTS WERE NOT PREPARED IN ACCORDANCE WITH GAAP
              ----------------------------------------------------

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00033-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00033-of-00352.parquet"}]]