Fairchild Model 20

Fairchild Model 20

Pneumatic PrecisionVolume Booster Model 20

The Model 20 Volume Booster is a smaller pneumatic device capable of high flow and exhaust capacity. This device uses a force balance system to control the movement of the supply and exhaust valves. As a pilot operated regulator design, the Model 20 handles up to 10 Barg [150 psig] supply pressure and has ten available ratios to cover a wide range of applications. The Model 20 Booster provides a flow capacity of 76.5 m3/HR, which equates to a Cv factor of approximately 1.0 in forward mode.


  • Flow capacity of 76.5 m3/HR
  • Ten available pressure ratios
  • Optional Adjustable By-Pass Needle Valve option includes bubble tight exhaust valve.
  • Optional Fixed Negative Bias.
  • A separate Control Chamber isolates the diaphragm from the main flow.
  • Unit construction.
  • Mounting Bracket available

  • Fast responsive operation.
  • Easily suits your downstream pressure requirements.
  • Allows tuning for optimum dynamic response (1:1 ratio only) and cycle free operation with Valve Positioners.
  • Facilitates use with pneumatic signal devices that cannot be adjusted to zero signal pressure
  • Eliminates hunting and buzzing
  • Allows servicing without removal
  • Easy installation in the field

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