PSR Regulator Series

Brand: Proportion-Air, Inc

PSR pilot operated regulators are dome-loaded, self-venting volume boosters that function as a slave regulator when mated with our QB-Series electronic pressure regulators.

The PSR provides a controlled pressure with much higher flow rates than can be achieved through the QB products alone.

PSR pilot operated regulators can handle any inert gas or they can be adapted for use with natural gas, propane or oxygen.
  • Quick response
  • Flows to 700 scfm
  • High relief flow
  • Balanced valve design
  • Control pressures to 200 psig
  • Non-air consuming in steady state
  • Threaded relief port


Maximum Inlet Pressure

  • 300 psi (20.7 bar)

P2 Pressure Range

  • 0 to 200 psi (13.8 bar)

Operating Temperatures

  • 0° to 175° F (-18° to 79° C)


  • 40 micron

Port Size

  • 1/4” thru 1-1/2”

Relief Flow Capacity

  • 19 scfm Max. (538 LPM)


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