The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking to procure three nonpowered valves under the presolicitation notice titled "48--SEAT, VALVE." The procurement involves a specific National Stock Number (NSN 1H-4820-015417527-D4) and requires delivery to the Portsmouth Naval Shipyard in Kittery, Maine. These valves are critical components for various naval applications, and the government intends to negotiate with only one source under FAR 6.302-1, although all responsible sources may express their interest and capability. Interested parties should note that proposals will be considered if submitted within 45 days of the notice publication, and they can contact Noelle M. Smith at (717) 605-3992 or via email at noelle.m.smith10.civ@us.navy.mil for further information.