Pressure Control Valves

Proporotional Pressure Control Valves

Whether you need a high pressure regulator for bottled gasses, a low pressure regulator for inches of water column, a precision pressure regulator for lab or medical grade applications, or even an oxygen regulator cleaned and compatible for oxygen service, Wainbee can provide you with the right Proportion-Air pressure regulators.


  • Proportional control valve with pressure control ranges of full vacuum through 150 psig
  • Integral pressure reducing valve for high forward and relief flows
  • Vacuum regulator model available
  • Oxygen regulator model available
  • 0-10Vdc and/or 4-20mA signals
  • DQB3 - Pressure Control with Digital Dispaly

  • The QB4 closed loop electronic pressure regulator can handle flow rates as high as 200 scfm forward flow and 300 scfm exhaust flow.
  • Pressures from vacuum to 150 psig.
  • The unit is made up of two solenoid valves, an internal pressure transducer and an electronic control circuit mounted to an integral volume booster.
  • 0-10 Vdc or 4-20mA signals
  • QB4 also provides an electrical monitor signal for output to a panel meter or controller for data acquisition or quality assurance needs.

  • The QL3 allows high volumes of air to move quickly and precisely at pressures up to 150 psig using proportional solenoid valves with a unique analog PID circuit.
  • Ideal for use with flow meters, it provides high resolution and smooth pressure control at high and low flow rates and avoids the “steps” prevalent in most feed and bleed I/P’s.

  • High pressure regulator for control up to 500 psig
  • Available as an oxygen regulator with brass regulator body
  • Integral air pressure regulator for high forward and relief flows
  • Stainless steel internal pressure sensor for closed loop pressure control