Exhibit 99.4

              Instructions to Registered Holder or DTC Participant
                              From Beneficial Owner
                                       for
                    9-3/8% Senior Subordinated Notes due 2011
                                       of
                                  Dresser, Inc.

         The undersigned hereby acknowledges receipt of the Prospectus, dated
_____________________ (the "Prospectus"), of Dresser, Inc., a Delaware
corporation (the "Company"), and the accompanying Letter of Transmittal (the
"Letter of Transmittal") that together constitute the Company's offer to
exchange (the "Exchange Offer") its new 9-3/8% Senior Subordinated Notes due
2011 (the "New Notes"), pursuant to an offering registered under the Securities
Act of 1933, as amended (the "Securities Act"), for a like principal amount of
its issued and outstanding 9-3/8% Senior Subordinated Notes due 2011 (the "Old
Notes"). Capitalized terms used but not defined herein have the meanings
assigned to them in the Prospectus and the Letter of Transmittal.

         This will instruct you as to the action to be taken by you relating to
the Exchange Offer with respect to the Old Notes held by you for the account of
the undersigned.

         The principal amount of the Old Notes held by you for the account of
the undersigned is (fill in amount):

                  $ ____________ principal amount of Old Notes.

         With respect to the Exchange Offer, the undersigned hereby instructs
you (check appropriate box):

         [ ]      To TENDER the following principal amount of Old Notes held by
                  you for the account of the undersigned (insert amount of Old
                  Notes to be tendered, if any):

                  $___________ principal amount of Old Notes.

         [ ]      NOT to TENDER any Old Notes held by you for the account of the
undersigned.

         If the undersigned instructs you to tender the Old Notes held by you
for the account of the undersigned, it is understood that you are authorized:

                  (a) to make, on behalf of the undersigned (and the
         undersigned, by its signature below, hereby makes to you), the
         representations and warranties contained in the Letter of Transmittal
         that are to be made with respect to the undersigned as a beneficial
         owner, including but not limited to the representations that (i) the
         New Notes or book-entry interests therein to be acquired by the
         undersigned (the "Beneficial Owner(s)") in connection with the Exchange
         Offer are being acquired by the undersigned in the ordinary course of
         business of the undersigned, (ii) the undersigned is not participating,
         does not intend to participate, and has no arrangement or understanding
         with any person to participate, in the distribution of the New Notes,
         (iii) if the undersigned is a resident of the State of California, it
         falls under the self-executing institutional investor exemption set
         forth under Section 25102(i) of the Corporate Securities Law of 1968
         and Rules 260.102.10 and 260.105.14 of the California Blue Sky
         Regulations, (iv) if the undersigned is a resident of the Commonwealth
         of Pennsylvania, it falls under the self-executing institutional
         investor exemption set forth under Sections 203(c), 102(d) and (k) of
         the Pennsylvania Securities Act of 1972, Section 102.111 of the
         Pennsylvania Blue Sky Regulations and an interpretive

         opinion dated November 16, 1985, (v) the undersigned acknowledges and
         agrees that any person who is a broker-dealer registered under the
         Securities Exchange Act of 1934, as amended, or is participating in the
         Exchange Offer for the purpose of distributing the New Notes must
         comply with the registration and prospectus delivery requirements of
         the Securities Act in connection with a secondary resale transaction of
         the New Notes or interests therein acquired by such person and cannot
         rely on the position of the staff of the Commission set forth in
         certain no-action letters, (vi) the undersigned understands that a
         secondary resale transaction described in clause (v) above and any
         resales of New Notes or interests therein obtained by such holder in
         exchange for Old Notes or interests therein originally acquired by such
         holder directly from the Company should be covered by an effective
         registration statement containing the selling security holder
         information required by Item 507 or Item 508, as applicable, of
         Regulation S-K of the Commission and (vii) the undersigned is not an
         "affiliate," as defined in Rule 405 under the Securities Act, of the
         Company. Upon a request by the Company, a holder or beneficial owner
         will deliver to the Company a legal opinion confirming its
         representation made in clause (vii) above. If the undersigned is a
         broker-dealer (whether or not it is also an "affiliate") that will
         receive New Notes for its own account pursuant to the Exchange Offer,
         the undersigned represents that the Old Notes to be exchanged for the
         New Notes were acquired by it as a result of market-making activities
         or other trading activities, and acknowledges that it will deliver a
         prospectus meeting the requirements of the Securities Act in connection
         with any resale of such New Notes; however, by so acknowledging and by
         delivering a prospectus, the undersigned does not and will not be
         deemed to admit that is an "underwriter" within the meaning of the
         Securities Act;

                  (b) to agree, on behalf of the undersigned, as set forth in
         the Letter of Transmittal; and

                  (c) to take such other action as necessary under the
         Prospectus or the Letter of Transmittal to effect the valid tender of
         such Old Notes.

                                    SIGN HERE

Name of Beneficial Owner(s):
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Signature(s):
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Name(s):
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                                 (PLEASE PRINT):

Address:
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Telephone Number:
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Taxpayer Identification or Social Security Number:
                                                  -----------------------------

Date:
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