Hawkeye122

Thank you Don and dmk. I expected it to work as you describe, but it isn't at the moment. I'm using the Paasche R75 regulator, which I think is supposed to be of reasonably good quality, so I must have done something wrong in my setup. I'll check it this weekend. I appreciate your excellent description of how it's supposed to work.

Can someone please explain how a compressor regulator should be working for my airbrush? My compressor has a pressure gauge indicating tank pressure, I have a regulator and filter connected to the compressor output, and the line out from the regulator goes to my airbrush. The regulator, though, is just a knob that varies the size of an opening in a valve from fully open to fully closed. I can see that this operates as a "flow restrictor" when the airbrush is in use, but the second I release the trigger on the airbrush, doesn't the line pressure equalize with the tank pressure? In other words,