Home / / products / Forward/Exhaust Flow Volume Booster (M20)

Forward/Exhaust Flow Volume Booster (M20)

About Forward/Exhaust Flow Volume Booster (M20)

Model 20 Volume Booster pneumatic device capable of high flow and exhaust capacity, 45 SCFM [76.5 m3/Hr]

Technical Specifications
Visit Fairchild
Product Specifications
Visit Fairchild


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 M20 handles up to 150 psig, [10.0 BAR], (1000 kPa) supply pressure and has ten available ratios to cover a wide range of applications.

The M20 Booster provides a flow capacity of 45 SCFM (76.5 m3/HR), which equates to a Cv factor of approximately 1.0 in forward mode. Typical Part Numbers are 20812, 20822, 20832, 20842, 20852, 20862, 20813, 20823, 20833, 20843, 20853, 20863


Max Supply Pressure: 250 psig [17 BAR]
Max Output Pressure: 150 psig [10 BAR]
Flow Capacity: 45 SCFM (76.5 m3/HR)
Accuracy: 0.15 psi (typ)



  • 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
  • Suitable for use in all Canadian territories and provinces
  • Flow capacity of 45 SCFM (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
  • Canadian Registration Number (CRN) Certification.