PARTS KIT,VALVE

The U.S. Navy is seeking a parts kit for a 4-inch hull and backup valve, consisting of one ball and two mating seats. The parts must meet specific material and testing requirements, including quantitative chemical and mechanical analysis. The contractor must also provide certification data and comply with various quality assurance requirements. The contract includes provisions for government inspection, testing, and acceptance of the parts. Key requirements include: * The ball must be made of SAE-AMS-6931 material or centrifugally cast 6AL-4V, ASTM-B367, Grade C-5. * The seats must be made of MD71-GG Mearthane (Graphite Filled Urethane) material. * The parts must undergo various tests, including hydrostatic testing and non-destructive testing. * The contractor must provide certification data, including material certification test reports and objective quality evidence. * The contractor must comply with quality assurance requirements, including maintaining a quality system in accordance with ISO-9001 and providing inspection records.