Butterfly valve
Also called flap valve, it is a kind of regulating valve with simple structure. The butterfly valve is a kind of valve that uses a disc-type opening and closing member to reciprocate about 90° to open, close and adjust the fluid passage. Among them, the soft sealing butterfly valve is suitable for regulating flow on water supply and drainage, gas pipelines such as food, medicine, chemical industry, petroleum, electric power, textile, paper-making, etc...