... ash, mud slag, coal slurry, pulp, sewage of solid, liquid-solid ,gas-solid two-phase medium conveying system in the pipeline switching ... valve features:1, seal by structural ceramics, can prevent solid grain scour, wear to seal face,ensure valve seal ... gearHydraulic cylindersOther actuators available Zhongcheng is one of the chinese leading manufacturers of industrial steel valves.Our valves are ...