LTFW PART DESCRIPTIONS.xlsx

This is a parts specification document that lists seven butterfly valve seat assemblies required for the USNS LUCY STONE (T-AO 209) Long-Term Fixture and Wear (LTFW) program. The parts are identified by part numbers ranging from 104-37659-90 through 104-22516-90, with sizes spanning 2.5 inches to 16 inches in diameter. Each valve features Viton seals with material specifications including FKM, EPDM, or VMQ elastomers rated at 250 PSI, except for one self-actuating check valve rated at 3000 PSI. Lever mechanisms are constructed from either ductile iron or stainless steel per the specifications listed for each part number.

The specification document supports a Department of the Navy Military Sealift Command solicitation (N3220526Q7050) for butterfly valve seat procurement. Interested contractors should note that detailed technical drawings are available in attached documents and should be viewed at 66% magnification or higher for clarity. Per the solicitation instructions, contractors must submit quotes using separate forms rather than within the solicitation document itself.