... -10-51259577Application Nantong China-Mining SLVds -0.1 manual single, double flat gate valves are widely used in building ... control dust ideal equipments. Second, characteristics SLVds -0.1 manual single, double flat gate simple structure, light weight, flexible operation, ... .Three, working principle Nantong middlings SLVds -0.1 manual single, double flat gate mainly by the framework, screw nut, ...