FREE-VALVE pneumatic operating double flap disc dump valve s are widely used to transport dry solids between areas with different air pressures.This valve is mainly used in the coal ash pneumatic conveying system of thermal power generation enterprises, as the bin pump feed valve and ash discharge valve. At the same time, it can also be used for cement, mining, paper making, chemical industry and other kinds of dry dust,and other media with wear on the pipeline for opening and closing.
