Asahi DP79PSNST Air To Spring Actuator 4.5 Inch Bolt Pattern

The Asahi/America DP79PSNST Air-to-Spring Actuator delivers spring-return actuation from a compact 4.5-inch bolt-pattern footprint, a member of the Series 79 family of pneumatic actuators. This single-acting model uses compressed air to move the output and relies on an internal return spring when air is removed, making it suitable for fail-safe valve control and other automation tasks. Designed for mounting on equipment with a 4.5" bolt circle, it provides a standardized outdrive interface that supports quick replacement and straightforward integration with compatible valves and actuated accessories. The DP79PSNST follows the 80–120 psi supply range typical of Series 79 air-to-spring variants, enabling reliable operation across common plant air systems while preserving a compact form factor. Typical applications include industrial valve actuation in chemical processing, water treatment, and general process automation where a reliable spring return is required for safety or default-position control. For precise torque, travel, porting, and mounting details tied to your Spring Set and installation, refer to official Asahi/America Series 79 documentation specific to DP79PSNST.