The CMR-250/GB3 choke valve actuator with high torque of 400 / 45.2 Nm.

The CMA Series of actuators delivers a series of sizes suitable for all of your process requirements.

The CMR-250 with GB3 close-coupled spur gearbox is a multi-turn, rotary actuator designed to meet the exacting balanced-choke requirements for high torque, low power consumption, modulating control in a compact space envelope. The low power consumption makes the CMR-250/GB3 ideal for solar-powered, battery back-up systems.

The CMA is adaptable to all choke valve manufacturers and has hazardous area certifications including ATEX, GOST, FM and IECEx.


  • 24 VDC option
  • Low power consumption
  • Can be powered by single-phase or direct current supplies
  • DC brushless motor and high efficiency gears
  • Permanently lubricated and maintenance-free drive train
  • Accurate and repeatable position control
  • Continuously modulating actuator
  • 4 to 20 mA loop powered, feedback signal
  • Wide standard ambient temperature range:
    EP Product: -4 to +149 °F (-20 to 65 °C)
    WT Product: -22 to +158 °F (-30 to 70 °C)
  • Manual override standard
  • All CMA units have the ability to adjust their speed 50-100% of operation
  • Pakscan, HART®, Profibus®, Modbus and Foundation Fieldbus® available. Optional hard wired RIRO (Remote In Remote Out).

See CMA Range Literature Page for Further Details.

CMR-250/GB3 Actuator