Butterfly valves are available in sizes DN25 to DN1200 and pressure ratings PN10/16 or ANSI 150lbs. Bodies are made of GGG40 or stainless steel, and the valves are also made of stainless steel for corrosion resistance. They can be coated with PTFE for use in chemically aggressive media. Seals, such as EPDM, NBR, Viton, and PTFE, are selected depending on the application. They can be operated manually with a handwheel or gearbox or automated with an electric or pneumatic actuator.
