Control Master Hydraulic Worm Gear Drive Choke Valve

The model CM is a extreme duty hydraulic choke designed with field maintenance in mind.


  • Worm gear actuator – provides precise movement for pressure manipulation control; self-locking to prevent movement.
  • Quick removal actuator.
  • 2” trim size, tungsten carbide.
  • Manual override capability - on all worm gear actuators.
  • Worm gear actuator can be modified to a piston with limited parts.
  • Reversible gate and seat.
  • Solid 2” tungsten carbide gate and seat – patented design provides maximum erosion resistance.
  • Pressure balanced gate – reduces operating force.
  • Downstream wear sleeve – extended-length solid tungsten carbide seat provides wear protection on body.
  • Large buffer cavity – slows velocity and distributes impact of solids.
  • Bleeder port to relieve pressure from choke body prior to bonnet removal for inspection or maintenance.
  • Full rated working pressure throttling capability.
  • Exceeds ANSI Class V drop tight seal shut off.

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