This is a combined synopsis/solicitation for a firm-fixed price purchase order for one new Shutoff Valve, with a requested delivery date of November 1, 2027. The requirement is unrestricted, but contractors are limited to Naval Supply Weapons Systems Support (NAVSUP WSS) approved sources, specifically those with traceability to OEMs PTI Technologies or Eaton Aerospace. All parts must be new, have airworthiness certification (such as FAA 8130), and be accompanied by a Certificate of Conformance. Performance will be in accordance with strict safety and quality specifications, with no deviations or alternate parts permitted.