The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of five air shutoff valves (NSN 7R-1680-015612426-E7) under a presolicitation notice. The contract will be negotiated with a single source, and the delivery terms are FOB Origin, indicating that the buyer will take responsibility for the goods once they are shipped. These valves are critical components for various aircraft systems, highlighting their importance in maintaining operational readiness and safety. Interested parties should direct inquiries to Karli D. Collins at (215) 697-4313 or via email at KARLI.COLLINS@NAVY.MIL, with proposals due within 45 days of the notice publication.