Worcester Controls 1039SN120AR5 Pneumatic Actuator

The Worcester Controls 1039SN120AR5 Pneumatic Actuator is a rugged rack-and-pinion rotary actuator designed for 90-degree, quarter-turn valve automation in industrial process systems, offering reliable pneumatic flow control in chemical processing facilities, water treatment plants, and manufacturing lines. Part of Series 39, it uses pneumatic spring return actuation and operates at up to 120 psi (air supply 40–120 psi) for rapid, repeatable valve positioning. Its corrosion‑resistant aluminum housing houses a stainless steel guide rod and fasteners, with ISO 5211 and NAMUR mounting compatibility to fit a wide range of ball valves, butterfly valves, and dampers. The unit provides adjustable travel stops and modular accessory mounting, and is designed for up to approximately 5 million cycles before overhaul under normal operating conditions. Applications include valve automation, retrofit, and process upgrades in industrial process automation, steam systems, and compressed-air setups. Common replacements include Flowserve Worcester F39 Pneumatic Actuator, Bray Pneumatic Rotary Actuator, and Asco Rack and Pinion Pneumatic Actuator.