The Department of Defense, through the Defense Logistics Agency (DLA Aviation), is seeking offers for the procurement of 62 check valves (NSN: 4820-015147193) from qualified suppliers. This presolicitation notice indicates that the procurement is unrestricted, with Lockheed Martin Corp identified as an approved source for the required part number 697998-3. These check valves are critical components for military or defense operations, and the contract stipulates delivery terms of FOB-origin with inspection and acceptance at the origin, expected within 142 days after receipt of order. Interested offerors must submit a completed solicitation package, as electronic submissions are not accepted, and the solicitation will be available on the DLA Internet Bid Board System (DIBBS) starting March 27, 2025. For further inquiries, potential bidders can contact Virginia Rhodes at virginia.rhodes@dla.mil.