The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of 9 units of a flight-critical valve, part number 2030144-101, under the presolicitation notice for NSN 7R-2915-015252326-RQ. Due to the critical nature of this component, which is essential for aircraft and missile fuel systems, the procurement requires government source approval prior to contract award, and only previously approved sources will be considered for this solicitation. Interested vendors must submit detailed technical data and source approval documentation with their proposals, as offers lacking this information will not be evaluated. Proposals must be submitted within 45 days of the notice, and interested parties can contact Patrick J. Kilkenny at (215) 697-2560 or via email at PATRICK.J.KILKENNY2.CIV@US.NAVY.MIL for further information.