Installing a 4zk94 Regulator having blowback
I am installing a 4zk94 onto our compressor line to regulate air flow to our tools. Once I install the regulator according to the instructions and apply the air I can not get the regulator to work properly. I have incoming air at 160psi and want to regulate the outgoing air to around 85-90psi, but each time I turn on the system the regulator vibrates and blows air out the top of the unit. I have checked the flow and verified the maximum inlet pressure, but I can't get the system to stabilize. What could I be doing wrong during the installation?