[EricH]

Originally Posted by itsme

Umm.. A bit confused
Can I connect the relieve valve right after the pressure switch in the circuit (as described in the pneumatics manual). And where do you mean the 2 output ports, on the compressor?
And what do you mean about the calibration? My team spin it a bit because we had air coming out from there (on low pressure, something like 20 PSI).

On the top of the compressor, there are two ports. The 125 psi relief goes into one of them. The manual relief could go almost anywhere in the system, as long as it completely drains it.

On the calibration, the 125 psi valve cannot be tampered with and remain legal. If air was leaking at low pressure, you should try teflon tape on the threads first, as that will help seal the threads.