Flowserve MKII control valve to replace obsolete Fischer control valve on Complex-41 GN2

Description: NASA/NSSC intends to award a sole-source contract to FLOWSERVE US COMPANY for one Flowserve MkII 1-inch control valve to replace an obsolete Fischer valve serving the Complex-41 GN2 meter station. The valve must handle 7,000 PSIG, regulate downstream pressure to 4,000–4,500 PSIG, and provide flow up to 6,800 SCFM, with specified materials, positioner, and actuator requirements. This special notice invites written capability submissions for consideration of whether to compete the procurement; responses are due October 27, 2026, at 3:00 p.m. CDT.