I use a Paasche R-75, which has a water filter built in. I don't know off-hand where they are made, but reasonably priced, and mine has held up for 10 years.
https://www.paascheairbrush.com/compressors/regulators?page=1They are available through Amazon and several discount retailers at around $25 (much less 10 years ago).
I use 2 regulators- one on the compressor tank, set to around 75 PSI, followed by 25' of air hose, then the Paasche, set to 20+ (depending on the paint), and the last 6' of hose to the airbrush. The two advantages- the filter just before the airbrush gets any water, dirt or whatever may have condensed in the hose, and because I use the compressor with staplers and such, if I have it set for 100 psi, the second regulator keeps me from accidentally sending high pressure through the airbrush (the label on mine says the max input pressure is 135 PSI, that may have changed in the intervening years).
If you have an older compressor that needs oil, an oil separator may also be advisable, as even tiny amounts of oil can be problematic with acrylics and lacquers.