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Pneumatic Actuators for ¼ Turn Valves

FDPP PDF File ImageCatalog pages for Scotch Yoke ¼ Turn Pneumatic Actuators


Pneumatic Actuator for Harsh Outdoor EnvironmentsScotch Yoke pneumatic actuators are designed for ¼ turn valve applications and capable of high torque output required by plug, ball and butterfly valves.  These pneumatic valve actuators are available in both double acting and spring return versions covering a torque range up to 2,212,500 in-lbs! 

Less costly than rack and pinion style actuators, Scotch Yoke style actuators typically output higher torque.  Scotch Yoke pneumatic actuators output a non-linear torque, which is well suited for butterfly valve applications but not advantageous for ball valves used for proportional flow control. Although Scotch Yoke style pneumatic actuators are physically larger than rack and pinion designs, they have fewer components and are more reliable.  Thus Scotch Yoke style actuators are typically used for large butterfly valves to minimize actuator cost and maximize reliability.

Scotch Yoke pneumatic actuators have an interchangeable and modular design to simplify maintenance.  Their weatherproof enclosure is made from ductile iron or fabricated from carbon steel, providing a superior strength-to-weight ratio. Scotch Yoke actuators provide reliable performance in the harshest environments.

 

Features and Options:


Air or spring actuate piston valve actuatorAnother style of pneumatic piston actuation, a cylinder style called the Airmax, is a simplified version for less demanding applications and for extremely cold (<20F) environments.  These have an aluminum or steel housing, Buna-N elastomers and output up to 132,760 in-lbs torque.  Pneumatic Cylinder Valve Actuator Specifications.