Asking about one that is basically like a Badger 80-2 or Thompson compressor.
Badger 250 airbrush manual says to drill a hole in the thread adapter when using it with
a 'non tank mounted diaphragm compressor'.
Will a Harbor freight regulator provide the same 'pop-off' valve pressure relief?
Here are links to regulator and Badger 80-2 google search.
https://www.google.com/search?q=badger+80-2&client=firefox-b-1&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjgkbOOiMfcAhUDKHwKHaUtBeAQ_AUIDCgD&biw=1366&bih=615
https://www.harborfreight.com/150-PSI-Air-Compressor-Regulator-Kit-with-Dial-Gauge-68223.html
What pipe size is that on the compressor?