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My guess is YES a leaking normally closed check valve will allow aux pressure out and thru the aux compressor back to the atmosphere.With my Liberty the aux compresso air passes thru 2 SMC air/water filters/traps, then thru a 120vac Versa brand normally closed solenoid check valve, then pressure is sensed by a SquareD Pumptrol 120vac adjustable pressure switch w/pressure relief.2000 Featherlite H3-45
2024 Jeep Grand Cherokee
Leesburg, FL