Rack and Pinion Valve Actuators - A Look Inside

Here is an animation of the assembly components of a Flowserve Automax Supernova rack and pinion actuator with a transparent look inside to see its operation.

The critical components to take note of during the video are:
  • body 
  • pinion gear
  • o-ring seals
  • piston "racks"
  • travel adjustments
  • end caps and seals
  • housing bolts
At the end, the video allows you to see the operation (in both directions) of the rack and pinion actuator as it is pressurized from either port. The pinion gear rotates 90 degrees, which in most applications, is used to open or close a valve or damper.