Air Compressor for Air Brushing Newbie Question

I drain mine every time. When I finish painting, I just use the unused air to clean.

Mike,

It is not really necessary every time you use it. I would just disconnect your air brush line. Depending upon your environment and use..draining the tank, maybe once a week would not be a bad idea. I can't see draining my 60gal tank in my garage, every time I used it. Besides if you leave the air in the tank and come back later and find your tank empty....you'll know you have a leak. 

Take Care!

Frank

I'll pull the release valve on the bottom of the tank from time to time to check for water buildup but I don't normally drain it completely.

Thanks Everyone.  I'll keep it full for now while I'm painting more and when I'm not I'll drain it.

Mike

Is there a little confusion here: I think Mike (OP) was asking about residual air in the tank after he had finished a painting session and NOT about draining the tank of any moisture that may have gotten into the tank during the session. Personally I use residual to clean and if any air left push the regulator drain valve to empty the tank - pressure in tank reads zero - after each session. I drain the tank of any moisture frequently but not each time. I know that large compressors have  a 'head unloader' but our little AB compressors don't and I think it's good practice to de-pressure the tank after use. YMMV