Asahi/America’s Type-57AT butterfly valve for commercial applications meets the pressure and temperature guidelines in ASTM F2389 for up to 12”. It also integrates into Asahi/America’s Asahitec PP-RCT piping systems for plumbing and HVAC applications, Asahi/America notes. The Type-57AT’s polypropylene body and disc are injection molded for durability, and the 316 stainless steel stem is non-wetted, the company says. For high cycle life and smooth torque, the seat and disc bushings have been fitted with dual O-ring seals. It is available in both wafer and lugged styles.