Special Features: The valve, which is also named separating material machine, is widely used in building material, metallurgy, mining, light industry and food industries etc. It is the ideal equipment to change flow direction of solid crystal and powder material in transportation system. The valve is welded in fine steel and equipped with different actuators according to the different demands. It has the features of lightweight, antifriction, definite indicating direction, handy switching and flexible operation etc. Type is side three-way liuzi, type is face three-way liuzi, type is four-way liuzi. The driving types are five: S denotes manual, D denotes electric, Z denotes automatic, Q denotes pneumatic and Y denotes electric hydraulic