The Air Force intends to award a brand-name purchase order for 300 Circle Seal check valves from Circle Seal Controls, with no competitive solicitation planned. Interested firms must respond within five business days of this notice to indicate their capability and business type. The NAICS code is 332911, with a size standard of 750 employees. No budget amount or performance location is specified. This notice is not a request for proposals, and the government may proceed without competition.