Presolicitation notice from the Department of Defense, Department of the Navy, is seeking a valve assembly and similar replacement parts. These valves are nonpowered and fall under the industry category of VALVES, NONPOWERED (PSC code: 4820). The notice specifies the National Stock Number (NSN) as 7H-4820-017185495, with a total quantity of 31 units. The delivery location is W25G1U, W1A8 DLA Distribution in New Cumberland, PA 17070-5002. The notice states that the government does not own or have rights to the data needed to purchase or contract repair of this part from additional sources. It is also mentioned that it is uneconomical to buy or reverse engineer the part. The government intends to solicit and negotiate with only one source under the authority of FAR 6.302-1. However, all responsible sources may express their interest and capability to respond to the requirement or submit proposals, quotations, or capability statements within 45 days (or 30 days if award is issued under an existing Basic Ordering Agreement). The notice also mentions that the government is not using the policies contained in FAR Part 12 for this solicitation. Interested persons may identify their interest and capability to satisfy the government's requirement with a commercial item within 15 days of this notice. The acquisition may be subject to Free Trade Agreements, as specified in the solicitation.