SS CS Heavy Pneumatic Actuator for Emergency Shut Down Valves - 25% Safety Factor, Multiple Torque Configurations

Name: SS CS Heavy Pneumatic Actuator for Emergency Shut Down Valves - 25% Safety Factor, Multiple Torque Configurations
Brand: Veson Valve Ltd.

Heavy-duty pneumatic actuator designed for emergency shut down valves with stainless steel and carbon steel construction. Features rack and pinion or scotch yoke designs, suitable for both on-off and modulating services. Includes comprehensive torque specifications with 25% safety factor for reliable industrial operation.

Place of Origin China

Color Red

Media Air Pneumatic

Material SS CS

Standard ISO5211 、ISO5210-DIN3337

Model Number VSF

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Product Description

SS CS Heavy Pneumatic Actuator for Emergency Shut Down Valves

Heavy-duty pneumatic actuator designed specifically for emergency shut down valve applications. Built with stainless steel and carbon steel construction for maximum durability and corrosion resistance in demanding industrial environments.

Key Torque Specifications

Proper actuator sizing requires understanding these critical torque parameters:

Break Torque (Opening Torque): Required to initiate valve movement from closed position

Running Torque (Mid-Stroke Torque): Maintains valve movement between positions

Seating Torque (Closing Torque): Required to fully seat valve in closed position

Maximum Allowable Stem Torque (MAST): Critical limit to prevent stem damage

Actuator Types & Configurations

Single Acting (Spring Return)

Fail Open or Fail Closed operation with internal spring return mechanism. Automatically returns to initial position upon air supply loss.

Double Acting (Direct Acting)

Requires air supply for both opening and closing operations. Maintains position during air supply interruption.

Technical Considerations

Critical Sizing Factors: Valve manufacturer torque specifications, media type flowing through valve, required safety factors (typically 25%), and actual air supply pressure at valve location.

Note: Always verify actual air pressure at valve location, as compressor pressure settings may differ from actual supply pressure.

Design & Performance Features

Rack and Pinion design provides constant torque output throughout stroke

Scotch Yoke design offers reduced torque in mid-stroke positions

Suitable for both On-Off service and Modulating (Throttling) applications

Engineered for reliable operation in emergency shut down scenarios