NSN 1HD 4820-01-549-6678 C1 valve, auto shut-off

The Department of the Navy Naval Supply Systems Command seeks quotations for an automatic shut-off valve (NSN 1HD 4820-01-549-6678, Level One Oxygen Clean), with quotations due May 29, 2026. The procurement is a Request for Quotations on a firm-fixed-price basis with no contract award guaranteed. Five units are requested with delivery required within 400 days to Portsmouth Naval Shipyard in Kittery, Maine.

The valve must comply with Marotta drawing 281250-0011 and be lubricated exclusively with Krytox 240AC. This is a Critical Safety Item (CSI) Level I / Scope of Certification material, requiring oxygen cleaning per MIL-STD-1330, comprehensive material traceability and certification, pressure testing, and intergranular corrosion testing. The contractor must establish quality systems per ISO-9001 or MIL-I-45208 and maintain full material traceability with unique identification markings. Packaging must conform to MIL-STD-2073 with Level B packing for domestic shipment.

The contractor must provide a Certificate of Compliance and submit certification data via WAWF to Portsmouth Naval Shipyard (N39040) prior to shipment. The procurement includes standard FAR and DFARS clauses, cybersecurity requirements (NIST SP 800-171), Buy American provisions, and configuration management provisions requiring contractor notification of engineering changes and variances. The NAICS code is 332919, Other Metal Valve and Pipe Fitting Manufacturing; PSC code is 4820, Valves, Nonpowered. Quotations are submitted to NAVSUP WSS at 5450 Carlisle Pike, Mechanicsburg, PA 17050-2411.