This is a contract for the manufacture and certification of one (1) Cover Plate for a 1.5-inch swing check valve, to be built to drawing NS-3983 using ASTM-B369 copper-nickel alloy. The material is designated as SPECIAL EMPHASIS (Level I) for a crucial shipboard system, requiring extensive quality assurance, including a certified quality system (e.g., ISO-9001), material traceability, and specific welding and hydrostatic testing procedures. Final delivery of the material is required on or before 215 days after the effective date of the contract, with certification data due 20 days prior to that delivery. The performance location is not specified, but the contract mandates Government Quality Assurance at source, with inspection typically performed by the Defense Contract Management Agency (DCMA).