Electronic Relief Valve



  • High Volume Relieving Flow Rate
  • Electronic Performance Feedback
  • Quiet Operation
  • Excellent Resolution and Repeatability

Kelly Pneumatics, Inc. introduces an Electronic Pressure Relief Valve for high flow applications. This valve offers high-resolution pressure chamber control for applications that require high-volume, relieving flow performance. Perfect for applications that need to sustain a consistent chamber pressure, this valve varies relief flow rates automatically, subject to dynamic increases in chamber pressure. Unlike traditional mechanical relief valves, the Electronic Relief Valve provides variable relief pressure based on a control signal.


Output Pressure Range1 to 100 PSI (standard)
1 to 300 psig (custom)
Pressure Accuracy+/- 1% or less (Full Span)
Linearity+/- 1% or less (Full Span)
Response Timeless than 250 milliseconds
(as low as 50 ms)
Max Flow Rate515 slpm / 18.2 scfm @ 100psi
Connections1/8" FPT or 1/4" FPT
Weight1.0 lb
Power Required12 or 24 VDC (Wire Leads); 110 VAC (Turnkey)
Current Required90 mA to 180 mA
Control Signal0-5 volts, 0-10 volts or 4-20 mA
Feedback Signal0-5 or 0-10 volts
Manual ControlAdjustable Potentiometer
Operating Temp.32-150 °F or 0-65 °C
Filtration40 Micron Recommended
Wetted MaterialsCold rolled stainless steel w/ electroless
nickel plating, brass and 304 stainless steel.

Wiring Details


* Omitted for Turn-Key Power Supply option

Terminal Number1*234
Lead Wire ColorBrown WhiteBlue Black
FunctionPower Supply VoltageControl SignalGroundFeedback Signal



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Max Flow Rate:500 LPM
Output Pressure: -14.5 to 300 PSI

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Max Flow Rate:500 LPM
Output Pressure: 1 to 300 PSI

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