Keep equipment running with the Pirate Brand Pop-Up Valve Stem. This small, urethane stem fits Pirate Brand, Schmidt Manufacturing, U.S. Filter and Axxiom brands.Forecast Sales is not affiliated with nor is it endorsed by the above manufacturer(s). The product depicted above is not produced or authorized by the above manufacturer(s), with the exception of Forecast Sales/Pirate Brand, RPB Safety, and Bullard.