This is a contract for the manufacture of a check valve, with inspection and acceptance at a source location to be specified. The performance location is not explicitly stated, but production facility changes require written approval from the Contracting Officer. The description includes detailed requirements for design, quality assurance, and compliance with specific military standards. Vendors must provide specific manufacturer and part number information, and authorized distributors must provide proof of authorization. Invoices and receiving reports must be submitted electronically through the Wide Area Workflow system.