Dust butterfly valve is a special design of side by the company to push the cylinder andaluminum alloy butterfly valve. Butterfly valve body by a high pressure aluminum alloy body,deformation wear aprons, polymer composite butterfly valve. lt is an ideal product for closinghopper hopper and a powdery or granular material silo, is widely used in cement concrete mixingstation transmission steel gravity dust etc Because of the special structure of the valve and theuse of engineering materials, it is always a very ecanamical and efficient selection.