Compact Automation Class-Act (CL) Valve Operator Model 742

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Class-Act (CL) Valve Operator - Model 742 - Compact Automation
Westminster, SC, United States
Class-Act (CL) Valve Operator Model 742
Features: • Heavy Duty Double Acting Ball Valve Systems • Valve sizes from ¼” to 3” • 140 in.lbs to 800 in.lbs • Spring Return Valve operators • Single acting with spring close or open • Valve Operator Systems Spring Return operators are formed by bolting a spring return unit to a double acting Val-U-Act operator. The return movement is effected by a clock-type spring which is pre-tensioned to about half the operator torque. The amount of pretension is large, compared to the rotation and therefore the torque does not vary more than 20% over the rotation. Spring returns are factory-installed and adjusted and have a worm drive adjustment for setting or changing spring pretension. By inserting a socket key into one end of the worm the spring pretension can be very easily increased or decreased to suit operating conditions. To increase pretension, turn the worm clockwise; to decrease, turn counterclockwise.
  • Features:
    • Heavy Duty Double Acting Ball Valve Systems
    • Valve sizes from ¼” to 3”
    • 140 in.lbs to 800 in.lbs
  • • Spring Return Valve operators
    • Single acting with spring close or open
    • Valve Operator Systems

Spring Return operators are formed by bolting a spring return unit to a double acting Val-U-Act operator. The return movement is effected by a clock-type spring which is pre-tensioned to about half the operator torque. The amount of pretension is large, compared to the rotation and therefore the torque does not vary more than 20% over the rotation.

Spring returns are factory-installed and adjusted and have a worm drive adjustment for setting or changing spring pretension. By inserting a socket key into one end of the worm the spring pretension can be very easily increased or decreased to suit operating conditions. To increase pretension, turn the worm clockwise; to decrease, turn counterclockwise.

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Technical Specifications

  Compact Automation
Product Category Pneumatic Valve Actuators
Product Number Model 742
Product Name Class-Act (CL) Valve Operator
Operating Temperature -20 to 180 F (-28.89 to 82.22 C)
Full Range of Rotary Motion 90°
Acting type Double Acting
Valve Motion Rotary
Actuator Type Vane
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