The Air Torque PT400S12H is a spring-return pneumatic valve actuator that delivers 90-degree rotation for quarter-turn valves, operated by clean compressed air up to 120 psi and returning to the rest position when supply is removed. It includes a built-in solenoid valve with a 4 mm orifice and a flow capacity (Qn) of 400 L/min, enabling quick actuation. An 8 mm internal air passage supports reliable operation, and the PT400S12H is part of the PT400 family designed for valve control in industrial piping systems. Typical applications include actuation of ball and butterfly valves in process lines and other automation tasks requiring compact, repeatable pneumatic control.
