The Swagelok Whitey 131-SR spring return pneumatic actuator operates ball valves and similar quarter-turn devices in process and instrumentation systems. It accepts up to 200 psi air supply to stroke the valve and uses an internal spring to drive automatic return to the fail-safe position once pressure is removed. The compact design mounts directly onto compatible Whitey valves without additional brackets, providing reliable remote or automated control in gas and liquid lines where electrical actuation is impractical.
