The Department of Defense, through the Defense Logistics Agency (DLA Aviation), is seeking quotes for the procurement of three units of the Valve Assembly, Relief (NSN 1560-01-472-0353). This solicitation is a source-controlled drawing item, and interested vendors must meet the specifications outlined in the associated drawing, with approved sources including 0R293 and 55820. The items are critical components in aerospace applications, emphasizing the importance of compliance with military standards. Quotes must be submitted electronically, and any inquiries should be directed to the buyer via email at DibbsBSM@dla.mil, with a delivery deadline set for 170 days after award.