... safety valves,slurr valves ,diaphragm valves ,check valves,and gate valves. The nominal diameter is DN40--DN 4000mm with the ... metal compensators and mufflers Structural features Air operate Fan Shape Gate Valve Welded quality steel, the valve open and flexible, ... long life and other characteristics. Scope Air operate Fan Shape Gate Valve Widely used in mining, metallurgy, building materials, electric ...