... kinds of pneumatic angle seat valve,pneumatic&electrical valve,pneumatic & electrical actuator,solenoid valve,diaphragm valve and so on.the ... pneumatic & electrical actuators,various pneumatic &electrical ball & butterfly valves,and all kinds of control valves more than ten ... NBRActuator Material:aluminum alloy4)Pictures Pneumatic actuator, Valve actuator,AT Series actuator,Double acting and single acting ...