ZSHOF Series of "O" Shut-off Ball Valve Lined F have full bore ball valve structure. Using special molding process, the inner wall of the valve body and ball core lined fluorine plastic have ability to resistant corrosion by acid, alkaline fluid, it mainly uses for cutting off and switching on corrosive fluid in the pipeline, and also can be used for flow regulation and control purpose; Ball body and stem are integrated design, which eliminating the angular difference; Connection spaces between main and auxiliary valve, as well as valve and packing, have metal limiting structure performance, so that the valve seat sealing ring is reasonable pre-loaded and space limited to maintain the stability torque; Actuator uses the high performance double pinion structure, with high transmission efficiency, impact structure, electronic type electric actuator could also being chosen if needed.