The Air Force is conducting market research via a Sources Sought notice to identify potential sources for the new manufacture of a butterfly valve (NSN 4810-01-039-0459TP, P/N 398654-1-4) for the C-130 platform. This is not a solicitation; no contract will be awarded from this notice, and interested parties must register as interested vendors to participate in market research. Potential sources must be capable of supplying all labor, materials, and equipment for manufacturing, inspection, testing, packaging, and shipping, and may also handle supply chain management and nonrecurring engineering costs. The estimated spares requirement is 79 units, and the applicable NAICS size standard is 1,250 employees. Performance of services would be at Tinker AFB, Oklahoma 73145.