The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is soliciting proposals for the procurement of fluid valves under the title "16--VALVE, FLUID UNIT." This solicitation requires vendors to provide items that necessitate government source approval prior to award, and interested parties must submit their proposals along with the necessary documentation as outlined in the NAVSUP WSS source approval brochure. The goods are critical components for aircraft hydraulic systems, emphasizing their importance in maintaining operational readiness and fleet support. Proposals must be submitted via email to Owen M. McNamara at owen.m.mcnamara2.civ@us.navy.mil by the specified due date, with the procurement process adhering to FAR Part 12 guidelines for spares buy.