Pneumatic powder butterfly valve-Shanghai Yuwang valve is mainly used for opening and closing bins, hoppers and silos containing powder or granular materials. Flange connection is divided into single flange and double flange, valve body material is aluminum alloy, equipped with double-acting actuator or single-acting actuator, the valve uses the gravity of the material to intercept the flow and pneumatically transfer dry materials. It can be installed under hoppers, bins, silos, spirals or other types of conveyors, and connected to pneumatic conveying pipes.
BLF pneumatic powder butterfly valve is an industrial product specially used in powder, granular materials and cement industries. The soft seal formed by the valve body rubber sealing ring makes it very suitable for various applications where powder and granular materials are used, especially for materials with strong abrasiveness. In powder and granular material processing systems that require gravity or pneumatic conveying, butterfly valves are often installed in hoppers, silos, screw conveyor outlets and gas pipelines. According to application requirements, drive handle or cylinder drive kit can be selected separately. It is easy to install and maintain. It is a highly cost-effective powder board and nitrile seal ring coated with wear-resistant polymer materials. There are manual, electric, pneumatic, gear motor driven and other driving devices, which can be exchanged for each other. The double-flange butterfly valve has two identical flange surfaces; the lower part of the single-flange butterfly valve is equipped with an extended connecting ring to install the soft sleeve. 
