The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking to procure four pilot-operated valves under a presolicitation notice. The procurement involves the National Stock Number (NSN) 7H-4820-012282829-PP, with a total quantity of four units required for delivery on a Free on Board (FOB) origin basis. These valves are critical components in various naval applications, and the government intends to negotiate with only one source due to the unique nature of the item, which cannot be economically reverse-engineered or sourced from additional suppliers. Interested parties are encouraged to express their interest and capability to respond to this requirement by contacting Joshua Eshleman at (717) 605-6055 or via email at joshua.j.eshleman@navy.mil, with proposals due within 45 days of the notice publication.