Worcester Controls Model 10 39S Spring Return Pneumatic Actuator 120PSI

The Worcester Controls Model 10 39S Spring Return Pneumatic Actuator (120 PSI) is a heavy-duty rotary actuator designed to automatically operate valves using compressed air while providing a fail-safe spring return function. When air pressure is applied (up to approximately 120 PSI), the actuator rotates the valve to the open or closed position depending on configuration, and when air supply is removed, the internal spring mechanism automatically returns the valve to its original safe position. This spring return feature is essential for safety-critical applications where valves must default to a known position during power or air loss conditions.

Built for industrial reliability, this actuator is commonly used to control quarter-turn valves such as ball, plug, or butterfly valves in process piping systems. It is widely used in industries such as chemical processing, water and wastewater treatment, oil and gas, HVAC systems, and general industrial automation. Its rugged construction allows it to perform consistently in demanding environments where precise and repeatable valve actuation is required. The Model 10 39S is typically mounted directly to compatible valve assemblies and integrates easily into pneumatic control systems for automated flow regulation and shutdown safety.

Key Features:

• Spring return pneumatic rotary actuator
• Fail-safe return position on air loss
• Operates up to 120 PSI air pressure
• Designed for quarter-turn valve automation
• Rugged industrial construction
• Reliable and repeatable valve control
• Direct mount for ball, plug, and butterfly valves

Specifications:

• Brand: Worcester Controls (Flowserve)
• Model: 10 39S
• Type: Spring Return Pneumatic Actuator
• Operating Pressure: Up to 120 PSI
• Function: Rotary valve actuation (quarter-turn)
• Action: Spring return (fail-safe)
• Mounting: Direct valve mount (industry standard)

Applications:

• Chemical processing systems
• Water and wastewater treatment plants
• Oil and gas pipeline systems
• HVAC and industrial airflow control
• Process automation and flow control
• Safety shutdown valve systems