Swagelok 133 Pneumatic Spring Return Actuator

Swagelok 133 Series Pneumatic Spring Return Actuator is an air-powered device designed to actuate 3/4" sanitary valve assemblies, delivering reliable, repeatable control in hygienic process piping. The unit uses compressed air to move the valve to the commanded position and incorporates an internal return spring that automatically drives the valve back to its default position when air pressure is removed, providing a fail-safe in automated control schemes. As part of Swagelok's sanitary actuator lineup, it is designed for cleanability and leak-tight performance in environments that require hygienic standards. The actuator mounts to compatible 3/4" sanitary valves, enabling straightforward integration with standard plant air supplies and control logic to enable remote or automated valve positioning. This combination of precise actuation and fail-safe return supports reliable shutoff and process integrity in continuous operations and critical stop scenarios.