Proportion-Air, Inc. Datasheets for Pneumatic Relays and Volume Boosters

Pneumatic relays and volume boosters control output air flow and pressure in response to a pneumatic input signal.  They can perform simple functions such as boosting or scaling the output, or use complex reversal, biasing, and math function operators.
Pneumatic Relays and Volume Boosters: Learn more

Product Name Notes
1000 psi high pressure control valve. Electronically control pressure ranges from full vacuum up to 1000 psi. Variety of analog and digital command signals. High accuracy of +/- 0.25% F.S.
Modified spring for low pressure control is available.
Modified spring for low pressure control is available
R-SERIES cleaned for oxygen service and with modified bonnet for fast response.
The DQB3 is a complete electronic pressure control valve package consisting of two feed and bleed solenoid valves, a control circuit, a pressure transducer, an integral air pilot operated volume...
The PSR has a control pressure up to 200 psig.
The PSR-02 has a relief flow up to 12 SCFM.
The QB3 is a complete electronic pressure regulator package consisting of two feed and bleed solenoid valves, a control circuit, a pressure transducer, an integral air pilot operated volume booster,...
The QB3H is an electronic pressure regulator capable of operating at high pressures (to 500psig/34.47 bar) and high forward and relief flows (to 50scfm/1416slpm). The QB3H consists of two solenoid...
The QB4 closed loop electronic pressure regulator can handle flow rates as high as 200 scfm forward flow and 300 scfm exhaust flow. It works with pressures from vacuum to...