The Department of Defense, through the Defense Logistics Agency (DLA Aviation), is seeking quotes for the procurement of four check valves under solicitation number NSN 4820015115491. The requirement specifies delivery to DLA Distribution within 169 days after order, with approved sources listed for reference. These valves are critical components in various defense applications, ensuring proper flow control and system integrity. Interested vendors must submit their quotes electronically, as hard copies of the solicitation are not available, and any inquiries should be directed to the buyer via email at DibbsBSM@dla.mil.