Pneumatic powder butterfly valve is used in workbin or bin that contain powdery or granular material, they control the powdery and granular material of pipe in the bottom of workin or bin.

The single flange powder butterfly valve has top flange and folding parts, it is suitable for flexible bushing. The double flange butterfly valve has the same flanges in two ends, manufactured by gravity casting that better than pressure casting, are characterized by high wear resistance, less components, light weight,