Special industrial butterfly valve is characterized by high temperature resistance, high applicable pressure range, large nominal diameter of valve, carbon steel valve body, and metal ring instead of rubber ring for sealing ring of valve plate. The large high-temperature butterfly valve is welded with steel plate and is mainly used for the flue and gas ducts of high-temperature media.

In addition, the pneumatic butterfly valve is small and light, easy to disassemble and repair, and can be installed at any position. Simple and compact structure, small operating torque, and quick 90 ° rotation opening. The flow characteristics tend to be straight, and the regulation performance is good. The connection between the butterfly plate and the valve rod adopts a pin free structure, which overcomes the possible internal leakage point.