Dust pneumatic butterfly valve manufacturer butterfly valve dust is one of the world's most widely used device for closing bins, hoppers and have powder particles materials for industrial products. Die-cast body is made of lightweight aluminum alloy, the disc is lined with wear-resistant steel core polymer material, soft and wear-resistant rubber ring seal structure formation makes it ideal for a variety of powder granular materials applications, especially for highly abrasive materials. In need of gravity blanking or pneumatic conveying of powder particles in the material handling system, usually installed in hoppers, silos, screw conveyor outlet and pneumatic conveying pipeline. Such multi-disc valve housing co-cast aluminum (part caused by the size of the series cast iron butterfly valve housing). Switch plate with cast steel (part size series of rotating disk made of cast iron,) covered with wear-resistant polymer material. Such butterfly valve can be manual or pneumatic, electric or compressed air driven or gear motor drive, the drive can be mutually exchanged.