This is a sources sought notice for the spares procurement of a valve regulating (NSN 4820-01-182-9736, P/N 60790-4) for the B-1 platform. The Air Force is conducting market research to identify potential sources and determine if the effort can be competitive or set aside for small businesses. Interested firms must register as interested vendors; there is no solicitation available at this time, and no contract will be awarded from this notice. The successful source must provide new manufacture, including labor, materials, inspection, testing, packaging, and potentially supply chain management and engineering costs. Performance will take place at Tinker AFB, Oklahoma.