Hard sealed butterfly valve

Iron chain drive switch flange butterfly valve multi-level three eccentric hard seal remote chain switch high temperature resistant butterfly valve is made of stainless steel or carbon steel. The worm gear box is driven by a chain and can be remotely pulled to switch between high and low butterfly valves. Chain butterfly valves can better control the opening and closing of valves in high places where electric or pneumatic actuators cannot operate, meeting the requirements of the operating environment.