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Double-Acting Hydraulic Piston Actuators (FC)

The Master Flo FC double-acting hydraulic piston actuator is a linear actuator meticulously engineered to deliver the precise thrust output necessary for the efficient operation of Master Flo choke and control valves. This actuator is a trusted solution for applications demanding top-tier performance.

Safety Meets Efficiency

Safety and environmental considerations are paramount, and that’s why our actuator is designed with a sealed accessory drive mechanism and a linkage-free construction. These features not only enhance operator safety but also protect the actuator from environmental factors, ensuring consistent, reliable performance.


  • Carbon or low alloy steel

Control Signal

  • 4 – 20 mA (with control system)

Feedback Signal

  • 4 – 20 mA 

Operating Temperature

  • Standard: -20 F to 150 F (-28 C to 66 C)

Hazardous Area Certification

  • CSA/FM/UL: Explosion Proof or Intrinsically Safe
  • ATEX/IEC: Intrinsically Safe or Flameproof

Fail Action

  • Fail-close
  • Fail open
  • Fail last


  • Open yoke
  • hydraulic control system (normally equipped with a position feedback unit)
  • manual override (hand pump)
  • right-angle mount.

Piston Area (square inches)

  • FC 1: open – 8.8; close – 4.7 
  • FC 2: open – 20.1 (P2E, P25E Choke Valves), 17.7 (P3E, P3E-10K); close – 8.3 (all) 
  • FC 3: open – 24.3, close – 12.4


Hydraulic Supply Required

  • 1500 to 3000 psig

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