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What Size Drain Petcock Fits a 5 hp Compressor?


I have an Alltrade 5 hp compressor that I bought last June. I want to put an automatic drain on it. Is the drain petcock 1/4 inch? If so, one will fit. (Runs great!) Please email me back on that as soon as you can. Thanks, Bill


Hello William,
Your unit has a 1/2" NPT outlet so you'll need an adapter to fit same for the automatic drain.

Thanks for asking,


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