The Department of Defense, through the Defense Logistics Agency (DLA Aviation), is seeking quotes for the procurement of 53 units of the NSN 4820015591959 Stop-Check Valve. This solicitation is part of a Combined Synopsis/Solicitation and aims to fulfill specific military requirements for valve components critical to various defense applications. Interested vendors must submit their quotes electronically, as hard copies of the solicitation are not available, and all responsible sources are encouraged to participate. For inquiries, potential bidders can contact the DLA via email at DibbsBSM@dla.mil, and the delivery is expected to be made to DLA Distribution San Diego within 146 days after award.