This requirement is for the procurement of the Check Valve (NSN: 4820-00-711-1917GA; P/N: 204-060-657-001) applicable to the UH-1N aircraft. The Check Valve is an essential component necessary to prevent the back flow of fuel from the main fuel cell to the auxiliary fuel tanks on the UH-1N aircraft. This acquisition will result in a one-time surplus buy contract with a projected period of performance from 8 Sept 2025 through 7 Sept 2026. The contract will require the contractor to deliver the units in accordance with Government approved test requirements and specifications.