The Department of Defense, through the NAVSUP Weapon Systems Support office, is seeking proposals for the repair or modification of a flight-critical gate valve, identified by NSN 7R-4820-015079115-RQ, with a quantity of one unit required for delivery FOB origin. This procurement necessitates government source approval prior to contract award, as the technical data available does not support full and open competition, meaning only previously approved sources will be considered. The valve is essential for operational readiness, and interested vendors must submit comprehensive documentation as outlined in the NAVSUP Source Approval Information Brochures to be eligible for consideration. For further inquiries, potential bidders can contact Nadia Govorushko at (215) 697-2813 or via email at NADIA.GOVORUSHKO@NAVY.MIL.