The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of a windshield valve, identified by NSN 1R-1680-LLF02K720-P8, with a quantity of one unit required for delivery FOB origin. This item is classified as a commercial/nondevelopmental/off-the-shelf product, and it is critical for flight operations, necessitating government source approval prior to contract award. Interested vendors must provide comprehensive documentation as outlined in the NAVSUP WSS Source Approval Information Brochures, and proposals must be submitted within 45 days of this notice, with the understanding that the government may proceed with award based on fleet support needs if necessary. For further inquiries, interested parties can contact Helen I. Carmelo at (215) 697-1138 or via email at HELEN.I.CARMELO.CIV@US.NAVY.MIL.