has one-piece; 2 to 8 in.; PVC, CPVC, PPL, or PVDF plastic body with CPVC, PPL, or PVDF discs. BYB Series lever-operated valves are designed to replace metal valves in industrial piping systems. They are offered with choice of FPM, Nitrile, or EPDM full face liners and have Type 410 SS stem completely isolated from process stream. Also available, 14 to 24 in. sizes add high-torque gear box. Options include gear boxes on 2-8 in. sizes and electric/pneumatic actuation.