The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the repair and modification of stack valve assemblies. The procurement involves a quantity of five units of National Stock Number (NSN) 7R-1720-011569285-EY, with delivery terms set to FOB Origin. These stack valve assemblies are critical components used in aircraft launching equipment, underscoring their importance in maintaining operational readiness for naval aviation. Interested contractors should direct inquiries to Brian T. Kent at (215) 697-0000 or via email at BRIAN.T.KENT.CIV@US.NAVY.MIL, as all contractual documents will be considered issued upon transmission by the government.