The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of five units of a low-level control valve, identified by NSN 1R-4820-016611688-E7 and reference number 123SCP9904-1. The procurement is subject to strict source approval requirements, as the item is flight critical and must be acquired from sources specified on a source control drawing, with no adequate technical data available for alternative sourcing. Interested vendors must provide comprehensive documentation to demonstrate their capability to produce or repair the item, and proposals must be submitted with the required source approval information to be considered. For further inquiries, interested parties can contact Katlyn M. Galetto at (215) 697-6549 or via email at KATLYN.M.GALETTO.CIV@US.NAVY.MIL.