Economical and highly reliable, the valves feature a PVC body and disc with EPDM liner, and are available in 2- to 8-inch sizes. Unlike other plastic butterfly valves, the valves are constructed from a one-piece body that incorporates fully supported flanged boltholes to prevent stressing of the mating pipe flanges. A blowout-proof 316 SS shaft and a full body liner assure positive sealing of the liner to the valve body. A solid integral ISO 5211 mounting pad assures smooth operation with a lever handle, gear or actuator. Available options include gear operators, electric or pneumatic actuators, actuator mounts, and stem extensions.