This is a U.S. Navy procurement for a parts kit (a ball and two seats) for a critical 1.5-inch Hull and Backup Valve, designated as SPECIAL EMPHASIS material due to severe safety risks. The performance location is WSS Mechanicsburg, and the work involves handling CONFIDENTIAL documents and Naval Nuclear Propulsion Information. The proposed delivery schedule requires final material delivery on or before 365 days after the contract effective date. The requirement is set aside for small businesses and carries a national defense priority rating (DPAS DO Rating).