[Chester Stone]

Richard, yes, the hose coming out of the bottom is the drain hose. Air from the compressor comes in through the small hose in the upper right corner of the photo, enters into the water separator bowl through the combination water separator and check valve Figure "C". I have ordered another 120 to 12 volt relay and if it works I will stay with what I have. But if not, then I will probably convert to a McMaster-Carr 120 volt valve. Thanks for your help and Russ I recognize the added danger using 120 volts.