VALVE,CHECK
This is a Navy requirement for a complete 4-inch swing check valve assembly built to Emerson Crosby Drawing DS-B-90380, Revision E, Interim Change 3, designated SPECIAL EMPHASIS material for a crucial shipboard system. The contractor must provide certified materials and testing, including chemical/mechanical analysis, hydrostatic and seat tightness pressure tests, radiography, dye/liquid penetrant, ultrasonic inspection, and weldability testing, with welding/brazing procedures and qualifications approved before production or repair welding. If the offeror is not the OEM, it must identify the OEM and submit a signed distributor letter of authorization, and it must identify any packaging facility different from its own address. Award will be a DX-rated DPAS order requiring bilateral acceptance, configuration control, waiver/deviation and ECP submissions, and a one-year warranty from delivery. New welding procedure qualification requires at least 72 hours’ advance notice to DCMA, and Data Item A001 (Inspection and Test Plan) may be waived if already on file at NAVSUP WSS Mechanicsburg.