The Defense Logistics Agency (DLA) is seeking proposals for the procurement of check valves, specifically NSN 4820011259746, under a Combined Synopsis/Solicitation notice. The requirement includes a quantity of 2 units to be delivered to DLA Distribution within 168 days after order, with approved sources listed as 15187 90090002 and 71905 SS845-2110235 AY.8DA. These valves are critical components in various defense applications, ensuring the proper flow of fluids in military systems. Interested vendors, particularly Service-Disabled Veteran-Owned Small Businesses (SDVOSB), must submit their quotes electronically, as hard copies will not be provided, and inquiries can be directed to DibbsBSM@dla.mil.