My Rock was covered with heavy frost and spiting out the pressure relief port. Is this a problem?
That really shouldn’t be a problem. The frost on the outside simply indicates that there was alot of liquid getting into the regulator and the process of letting the liquid expand out really cools things down. The venting from the pressure relief was probably only happening when you quit shooting and the highly saturated gas that was downstream from the regulator would start to “warm up” / expand beyond pressures that are safe for the rest of the components in the system. Another condition that would cause the pressure relief to vent in that type of situation would again be the result of the chilling process that generates ice crystals in the gas flow. If the regulator valve gets a chunk of ice caught at the valve seat, it will let enough pressure through to activate the pressure relief. If your unit quit venting when you backed it off,then this later condition is not the case. In either case, the Rock was doing the job it was designed to do and you could have just ignored the venting
