The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is soliciting quotes for the procurement of valve components identified by NSN: 7RH 1660 016686580 and part number: 423785-2, with a total quantity of six units required. This solicitation emphasizes the necessity for government source approval prior to award, indicating that potential suppliers must submit detailed information as outlined in the NAVSUP WSS Source Approval Brochure, which is available online. The items are critical for aircraft air conditioning, heating, and pressurizing systems, underscoring their importance in maintaining operational readiness. Interested vendors must submit their quotes via email to Anthony Boselli at ANTHONY.BOSELLI@NAVY.MIL by the specified due date, and any proposals lacking the required source approval documentation will not be considered for award.