Master Flo Rotary Stepping Actuator is designed for the efficient operation of our P2E through P10 choke and control valves. This actuator conveniently mounts directly to the cover plate on bolted-bonnet valves, resulting in a compact sealed design. It enables rapid and straightforward field conversion from manual to automated operation.
Operating as a rotary actuator, it employs incremental 36° steps to position the valve in 1/10th of turn rotations of the valve-stem nut. This design provides the precision and high torque required for high-pressure valves. Separate cylinders are responsible for valve-open and valve-close operations, each equipped with a spring to deliver linear thrust converted to rotary action through the actuator mechanism.
To accommodate a range of applications and the entire surface valve lineup, the rotary stepping actuator offers three styles of operating cylinders: pneumatic, high-thrust pneumatic, and hydraulic.
The Master Flo Rotary Stepping Actuator is typically operated through solenoids, often in conjunction with position feedback provided by a 4-20 mA position transmitter unit. Additionally, optional positioner control systems are available for enhanced functionality.
Operating Cylinder (supply pressure):
Feedback Signal
Manual Override Drive:
Options:
Fail Action
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