Airbrush regulator

[TinyTurner]

Putting together an airbrush rig, small but heavy and old school, IE its not going to fall apart.
Seller said it could be old (British) army gear. looks a bit like an Aerolite piston type going by other pics.
Needs a good 1/4'' bsp fitting regulator/moisture trap.

All I can find is crappy Chinese cheapo regulators.
I imagine 0-30 psi/0-2bar is enough, rather than a higher range.
Are there some brands/part numbers to look out for?

[nickelplate759]

I have a Paasche regulator + moisture trap that I'm very happy with.

[thomasjmdavis]

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=1

They 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. 

[mmagliaro]

I have a Jet Tools one I bought nearly 30 years ago, and it still works perfectly.  Back then, I thought I was buying a "cheap one" in a Home Depot, but it certainly has held up.  It goes from 0-100 PSI, has a regulator + water trap + air filter. 
I realize this is old data... ha ha.

Looking around the web, it looks like Jet Tools only make filters/regulators with NPT threads, so you might have to hunt for adapters if you must have BSP threads.  A 1/4" NPT combo regulator/filter from them costs anywhere from $60 to $90 US.  They seem to be all cast aluminum and not cheaply made.  But I have no idea WHERE they are actually made.