The Department of Defense, through the Defense Logistics Agency, is seeking potential vendors for the procurement of linear valves (NSN 4810-00-818-0440HS) required for the maintenance of KC-135 aircraft at Tinker Air Force Base, Oklahoma. This Sources Sought Synopsis aims to assess the market for competitive sourcing options, including opportunities for small businesses such as Small Disadvantaged and Women-Owned Small Businesses. The procurement of these valves is critical for ensuring the operational readiness and maintenance of the KC-135 aircraft, which plays a vital role in air refueling missions. Interested vendors are encouraged to submit their business information to the designated Air Force email, as this is a preliminary market research step and does not guarantee a contract or funding.