The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support MECH, is seeking to procure three regulating valves (NSN 7H-4820-012585123) under a presolicitation notice. The procurement is intended for supplies that will be solicited and negotiated with only one source, as the Government does not own the data or rights necessary to purchase or contract repair from additional sources, making it uneconomical to reverse engineer the part. These valves are critical components for various defense applications, and the Government is open to receiving proposals, quotations, or capability statements from all responsible sources within 45 days of the notice publication. Interested parties can contact Robert Langel at (717) 605-3353 or via email at ROBERT.H.LANGEL.CIV@US.NAVY.MIL for further details.