Stainless steel pneumatic butterfly valve is a kind of high-performance and long-life butterfly valve, which is mainly composed of pneumatic actuator and stainless steel butterfly valve. The valve body and disc plate are made of stainless steel, with the characteristics of high temperature resistance, corrosion resistance and high pressure resistance The stainless steel pneumatic butterfly valve can be divided into flange, wafer type or welding type according to different connection modes. It is not only applicable to the two position switch off control, but also can be equipped with a valve positioner to realize the proportional adjustment of medium flow, temperature, pressure and other parameters Stainless steel pneumatic butterfly valve can be widely used in high temperature, high pressure, low temperature, fire protection and other pipelines for switching off or adjustment.