FOURTH CONSENT AND WAIVER UNDER THE SENIOR UNSECURED TERM LOAN AGREEMENT Dated as of September 29, 2005

Exhibit 4.2

EXECUTION COPY

FOURTH CONSENT AND WAIVER UNDER THE SENIOR UNSECURED

TERM LOAN AGREEMENT

Dated as of September 29, 2005

FOURTH CONSENT AND WAIVER UNDER THE SENIOR UNSECURED TERM LOAN AGREEMENT, dated as of September 29, 2005 (this “Consent”), among DRESSER, INC., a Delaware corporation (the “Borrower”), the Guarantors (as defined below), the Lenders listed on the signature pages hereto and XXXXXX XXXXXXX SENIOR FUNDING, INC. (“MSSF”), as Administrative Agent.

W I T N E S S E T H:

WHEREAS, the Borrower, the Guarantors, the Lenders party thereto and the Agents have entered into a Senior Unsecured Term Loan Agreement dated as of March 1, 2004, as modified by the Consent and Waiver dated as of March 18, 2005, the Second Consent and Waiver dated as of May 27, 2005 and the Third Consent and Waiver dated as of July 14, 2005 (the “Term Loan Agreement”; capitalized terms used herein but not defined shall be used herein as defined in the Term Loan Agreement).

WHEREAS, the Borrower desires to modify the Term Loan Agreement in certain respects and to waive certain Defaults and Events of Default under the Credit Agreement, in each case as provided herein;

WHEREAS, the Required Lenders have agreed, subject to the terms and conditions hereinafter set forth, to modify the Term Loan Agreement in response to the Borrower’s request as set forth below;

NOW, THEREFORE, in consideration of the premises and for other good and valuable consideration (the receipt and sufficiency of which is hereby acknowledged), the parties hereto hereby agree as follows:

SECTION 1. Consent. Notwithstanding anything to the contrary set forth in the Term Loan Agreement, the Required Lenders hereby consent to (a) the extension of the delivery date specified for the audited financial statements for the Fiscal Year ended December 31, 2004 and the other material with respect to such Fiscal Year required by Section 5.01(b) of the Term Loan Agreement to no later than November 14, 2005 (the “10K Extended Delivery Date”), it being understood and agreed that if the Borrower fails to deliver such audited financial statements and other materials on or before the 10K Extended Delivery Date, and a notice of Default with respect to such failure is delivered to the Borrower by the Administrative Agent or the Lenders holding of at least 25% of the outstanding principal amount of the Senior Unsecured Obligations pursuant to Section 6.01(c) of the Term Loan Agreement, such failure shall constitute an Event of Default for all purposes under the Loan Documents and (b) the extension of the delivery date specified for the material required by Section 5.01(b) with respect to each of the fiscal quarters ended March 31, 2005 and June 30, 2005 to no later than November 14, 2005

(the “10Q Extended Delivery Date”), it being understood and agreed that if the Borrower fails to deliver the materials required by Section 5.01(b) with respect to each of the fiscal quarters ended March 31, 2005 and June 30, 2005 by the 10Q Extended Delivery Date, and a notice of Default with respect to such failure is delivered to the Borrower by the Administrative Agent or the Lenders holding of at least 25% of the outstanding principal amount of the Senior Unsecured Obligations pursuant to Section 6.01(c) of the Term Loan Agreement, such failure shall constitute an Event of Default for all purposes under the Loan Documents. Notwithstanding the foregoing, it is further understood and agreed that the Borrower shall deliver to the Lenders all financial statements for each of the fiscal quarters ended March 31, 2005 and June 30, 2005 that are provided to the “Lenders” under the Existing Credit Agreement at the same time as such financial statements are delivered under the Existing Credit Agreement, and if the Borrower fails to do so, and a notice of Default with respect to such failure is delivered to the Borrower by the Administrative Agent or the Lenders holding of at least 25% of the outstanding principal amount of the Senior Unsecured Obligations pursuant to Section 6.01(c) of the Term Loan Agreement, such failure shall constitute an Event of Default for all purposes under the Loan Documents.

SECTION 2. Waiver. The Lenders holding not less than a majority in aggregate principal amount of the then outstanding Senior Unsecured Obligations hereby waive any Default or Event of Default in respect of the provisions of Sections 3.01(a)(iv), 3.01(c), 4.01(f), 4.01(g), 4.01(h), 4.01(j), 5.01(b) and 5.01(c) of the Term Loan Agreement and any related or substantially comparable provision of any Loan Document, in each case consisting of, resulting from or relating in any respect to (i) the re-audit, revision or restatement of any financial statement delivered prior to the date of this Consent and Waiver by the Borrower or any of its Subsidiaries (including, without limitation, any misstatement therein or in any certificate, representation or warranty relating thereto, or any error, defect or deficiency in accounting procedures or in the application of accounting principles reflected thereby or relating thereto), (ii) any failure to deliver any such financial statement when or as required, except as required by Section 1 above, (iii) any failure to comply with any obligation that became required to be performed or observed under any of such provisions by reason of the occurrence of any such Default or Event of Default or (iv) any misstatement as to the absence of any such Default or Event of Default.

SECTION 3. Conditions to Effectiveness. This Consent shall become effective as of the first date set forth above (the “Effective Date”) when each of the conditions set forth in this Section 3 to this Consent shall have been fulfilled to the satisfaction of the Administrative Agent.

(i) Execution of Counterparts. The Administrative Agent shall have received counterparts of this Consent, duly executed and delivered on behalf of each of (a) the Borrower and each Guarantor, (b) the Administrative Agent and (c) the Required Lenders, or as to any of the foregoing parties, advice reasonably satisfactory to the Administrative Agent that each of the foregoing parties has executed a counterpart of this Consent.

(ii) Payment of Fees and Expenses. The Borrower shall have paid, on or before September 30, 2005, (a) to the Administrative Agent, for the benefit of each Lender executing this Consent on or before September 28, 2005, a fee equal to 0.05% of

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the aggregate Commitments and Advances of each such Lender and (b) all expenses (including the fees and expenses of Shearman & Sterling LLP) incurred in connection with the preparation, negotiation and execution of this Consent and other matters relating to the Term Loan Agreement from and after the last invoice to the extent invoiced.

The Administrative Agent will notify the Borrower when this Consent has become effective as set forth above, and such notice shall be conclusive and binding upon the Lenders.

SECTION 4. Representations and Warranties. Each Borrower hereby represents and warrants that as of the date hereof no Default has occurred and is continuing or would result from the effectiveness of this Consent.

SECTION 5. Reference to and Effect on the Transaction Documents. (a) On and after the effectiveness of this Consent, each reference in the Term Loan Agreement to “hereunder”, “hereof” or words of like import referring to the Term Loan Agreement, and each reference in the other transaction documents to the “Credit Agreement”, “thereunder”, “thereof” or words of like import referring to the Term Loan Agreement, shall mean and be a reference to the Term Loan Agreement as modified by this Consent.

(b) The Term Loan Agreement, the Notes and each of the other Loan Documents, as specifically amended by this Consent, are and shall continue to be in full force and effect and are hereby in all respects ratified and confirmed.

(c) The execution, delivery and effectiveness of this Consent shall not, except as expressly provided herein, operate as a waiver of any right, power or remedy of any Lender or any Agent under any of the Loan Documents, nor constitute a waiver of any provision of any of the Loan Documents.

SECTION 6. Execution in Counterparts. This Consent may be executed in any number of counterparts and by different parties hereto in separate counterparts, each of which when so executed shall be deemed to be an original and all of which taken together shall constitute but one and the same agreement. Delivery of an executed counterpart of a signature page to this Consent by telecopier shall be effective as delivery of a manually executed counterpart of this Consent.

SECTION 7. Governing Law. This Consent shall be governed by, and construed in accordance with, the laws of the State of New York, and shall be subject to the jurisdictional and service provisions of the Term Loan Agreement, as if this were a part of the Term Loan Agreement.

SECTION 8. Entire Agreement; Modification. This Consent constitutes the entire agreement of the parties hereto with respect to the subject matter hereof, there being no other agreements or understandings, oral, written or otherwise, respecting such subject matter, any such agreement or understanding being superseded hereby, shall be binding upon and inure to the benefit of the parties hereto and their respective successors and assigns, and may not be amended, extended or otherwise modified, except in a writing executed in whole or in counterparts by each party hereto.

[Signatures follow.]

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IN WITNESS WHEREOF, the parties hereto have caused this Consent to be executed and delivered by their respective authorized officers as of the day and year first above written.

DRESSER, INC., as Borrower
By:				/S/    XXXXX X. XXXXXXX
		Name:		Xxxxx X. Xxxxxxx
		Title:		Executive Vice President and Chief Financial Officer

THE GUARANTORS

DRESSER INTERNATIONAL, INC.
By:		/s/    XXXXX X. XXXXXXX
		Name: Title:		Xxxxx X. Xxxxxxx Executive Vice President
DRESSER RE, INC.
By:		/s/    XXXXX X. XXXXXXX
		Name: Title:		Xxxxx X. Xxxxxxx Executive Vice President
DRESSER RUSSIA, INC.
By:		/s/    XXXXX X. XXXXXXX
		Name: Title:		Xxxxx X. Xxxxxxx Executive Vice President
LVF HOLDING CORPORATION
By:		/s/    XXXXX X. XXXXXXX
		Name: Title:		Xxxxx X. Xxxxxxx Executive Vice President
DRESSER ENTECH, INC.
By:		/s/    XXXXX X. XXXXXXX
		Name: Title:		Xxxxx X. Xxxxxxx Executive Vice President
RING-O VALVE, INCORPORATED
By:		/s/    XXXXX X. XXXXXXX
		Name: Title:		Xxxxx X. Xxxxxxx Executive Vice President

DRESSER CHINA, INC.
By:				/S/    XXXXX X. XXXXXXX
		Name: Title:		Xxxxx X. Xxxxxxx Executive Vice President

XXXXXX XXXXXXX SENIOR FUNDING, INC., as Administrative Agent
By:		/s/    XXXXXX XXXXXX
		Name:		Xxxxxx Xxxxxx
		Title:		Vice President

XXXXXX XXXXXXX & CO. INCORPORATED, as Collateral Agent
By:		/s/    XXXXXX XXXXXX
		Name:		Xxxxxx Xxxxxx
		Title:		Managing Director

LENDERS
FRANKLIN FLOATING RATE DAILY ACCESS FUND
By:				/s/    XXXXXXX XXX
		Name:		Xxxxxxx Xxx
		Title:		Vice President

LENDERS
Franklin Floating Rate Master Series
By:				/s/    XXXXXXX XXX
		Name:		Xxxxxxx Xxx
		Title:		Vice President

LENDERS
Venture III CDO Limited
By		its investment advisor, MJX Asset Management LLC
By:				/s/    XXX XXXXXXX
		Name:		Xxx Xxxxxxx
		Title:		Managing Director

LENDERS

OAK HILL SECURITIES FUND II, L.P.

By:

Oak Hill Securities GenPar II, L.P. its General Partner

By:

Oak Hill Securities MGP II, Inc., its General Partner

By:

/s/    XXXXX X. XXXXX

Name:

Xxxxx X. Xxxxx

Title:

Vice President

OAK HILL SECURITIES FUND, L.P.

By:

Oak Hill Securities GenPar, L.P. its General Partner

By:

Oak Hill Securities MGP, Inc., its General Partner

By:

/s/    XXXXX X. XXXXX

Name:

Xxxxx X. Xxxxx

Title:

Vice President

OAK HILL CREDIT PARTNERS I, LIMITED

By:

Oak Hill CLO Management I, LLC As Investment Manager

By:

/s/    XXXXX X. XXXXX

Name:

Xxxxx X. Xxxxx

Title:

Authorized Person

OAK HILL CREDIT PARTNERS III, LIMITED

By:

Oak Hill CLO Management III, LLC As Investment Manager

By:

/s/    XXXXX X. XXXXX

Name:

Xxxxx X. Xxxxx

Title:

Authorized Person

OAK HILL ADVISORS

By:

/s/    XXXXX X. XXXXX

Name:

Xxxxx X. Xxxxx

Title:

Authorized Person

LENDERS
Sankaty Advisors, LLC as Collateral Manager for XXXXX POINT CLO, LTD., as Term Lender
By:				/s/    XXXXXXX XXXXX
		Name:		XXXXXXX XXXXX
		Title:		SR. VICE PRESIDENT

LENDERS
Sankaty Advisors, LLC as Collateral Manager for Prospect Funding I, LLC as Term Lender
By:				/S/    XXXXXXX XXXXX
		Name:		XXXXXXX XXXXX
		Title:		SR. VICE PRESIDENT

LENDERS
WINGED FOOT FUNDING TRUST
By:				/s/    M. XXXXXXXX XXXXXXX
		Name:		M. Xxxxxxxx Xxxxxxx
		Title:		Authorized Agent

LENDERS
ULT CBNA Loan Funding LLC, for itself or as agent for ULT CFPI Loan Funding LLC
By:		`		/s/    XXXXX XXXXXXX
		Name:		Xxxxx Xxxxxxx
		Title:		As Attorney-in-Fact

LENDERS
SENIOR DEBT PORTFOLIO
By:		Boston Management and Research
		as Investment Advisor
		[Print Name of Financial Institution]

By:				/s/      XXXXXXX X. XXXXXXX
		Name:		Xxxxxxx X. Xxxxxxx
		Title:		Vice President

LENDERS
XXXXX XXXXX SENIOR INCOME TRUST
BY:		XXXXX XXXXX MANAGEMENT
		AS INVESTMENT ADVISOR
		[Print Name of Financial Institution]

By:				/s/      XXXXXXX X. XXXXXXX
		Name:		Xxxxxxx X. Xxxxxxx
		Title:		Vice President

LENDERS
XXXXX XXXXX INSTITUTIONAL SENIOR LOAN FUND
BY:		XXXXX XXXXX MANAGEMENT
		AS INVESTMENT ADVISOR
		[Print Name of Financial Institution]

By:				/s/      XXXXXXX X. XXXXXXX
		Name:		Xxxxxxx X. Xxxxxxx
		Title:		Vice President

LENDERS
XXXXX XXXXX CDO III, LTD.
BY:		XXXXX XXXXX MANAGEMENT
		AS INVESTMENT ADVISOR
		[Print Name of Financial Institution]

By:				/s/      XXXXXXX X. XXXXXXX
		Name:		Xxxxxxx X. Xxxxxxx
		Title:		Vice President

LENDERS
COSTANTINUS XXXXX XXXXX CDO V, LTD.
BY:		XXXXX XXXXX MANAGEMENT
		AS INVESTMENT ADVISOR
		[Print Name of Financial Institution]

By:				/s/      XXXXXXX X. XXXXXXX
		Name:		Xxxxxxx X. Xxxxxxx
		Title:		Vice President

LENDERS
XXXXX XXXXX CDO VI, LTD.
BY:		XXXXX XXXXX MANAGEMENT
		AS INVESTMENT ADVISOR
		[Print Name of Financial Institution]

By:				/s/      XXXXXXX X. XXXXXXX
		Name:		Xxxxxxx X. Xxxxxxx
		Title:		Vice President

LENDERS
XXXXXXX & CO
BY:		BOSTON MANAGEMENT AND RESEARCH
		AS INVESTMENT ADVISOR
		[Print Name of Financial Institution]

By:				/S/     XXXXXXX X. XXXXXXX
		Name:		Xxxxxxx X. Xxxxxxx
		Title:		Vice President

LENDERS
THE NORINCHUKIN BANK, NEW YORK BRANCH,
through State Street Bank and Trust Company N.A. as
Fiduciary Custodian
By:		Xxxxx Xxxxx Management, Attorney-in-fact
		[Print Name of Financial Institution]

By:				/s/      XXXXXXX X. XXXXXXX
		Name:		Xxxxxxx X. Xxxxxxx
		Title:		Vice President

LENDERS
XXXXX XXXXX
VT FLOATING-RATE INCOME FUND
BY:		XXXXX XXXXX MANAGEMENT
		AS INVESTMENT ADVISOR
		[Print Name of Financial Institution]
By:				/s/    XXXXXXX X. XXXXXXX
		Name:		Xxxxxxx X. Xxxxxxx
		Title:		Vice President

LENDERS
XXXXX XXXXX
LIMITED DURATION INCOME FUND
BY:		XXXXX XXXXX MANAGEMENT
		AS INVESTMENT ADVISOR
		[Print Name of Financial Institution]
By:				/s/    XXXXXXX X. XXXXXXX
		Name:		Xxxxxxx X. Xxxxxxx
		Title:		Vice President

LENDERS
TOLLI & CO.
BY:		XXXXX XXXXX MANAGEMENT
		AS INVESTMENT ADVISOR
		[Print Name of Financial Institution]
By:				/s/    XXXXXXX X. XXXXXXX
		Name:		Xxxxxxx X. Xxxxxxx
		Title:		Vice President

LENDERS
XXXXX XXXXX SENIOR
FLOATING-RATE TRUST
BY:		XXXXX XXXXX MANAGEMENT
		AS INVESTMENT ADVISOR
		[Print Name of Financial Institution]
By:				/s/    XXXXXXX X. XXXXXXX
		Name:		Xxxxxxx X. Xxxxxxx
		Title:		Vice President

LENDERS
XXXXX XXXXX FLOATING-RATE
INCOME TRUST
BY:		XXXXX XXXXX MANAGEMENT
		AS INVESTMENT ADVISOR
		[Print Name of Financial Institution]
By:				/s/    XXXXXXX X. XXXXXXX
		Name:		Xxxxxxx X. Xxxxxxx
		Title:		Vice President

LENDERS
Sankaty Advisors, LLC as Collateral
Manager for Prospect Funding I,
LLC as Term Lender
[Print Name of Financial Institution]
By:				/s/    XXXXXXX XXXXX
		Name:		XXXXXXX XXXXX
		Title:		SENIOR VICE PRESIDENT

LENDERS
Credit Industriel et Commercial
By:				/s/    XXXXXXX XXXX
		Name:		Xxxxxxx Xxxx
		Title:		Vice President
By:				/s/    XXXXXX XXXXXX
		Name:		Xxxxxx Xxxxxx
		Title:		Vice President

LENDERS
Metropolitan Life Insurance Company
[Print Name of Financial Institution]
By:				/s/    XXXXX X. XXXXXXX
		Name:		Xxxxx X. Xxxxxxx
		Title:		Director

LENDERS
Citicorp Insurance & Investment Trust
[Print Name of Financial Institution]
As managed by Metropolitan Life Insurance Company
By:				/s/    XXXXX X. XXXXXXX
		Name:		Xxxxx X. Xxxxxxx
		Title:		Director