airbrush and compressor accesories

i picked up an air compressor and air brush at work for $5. .....let me explain .lol. i work at wal mart in the bakery decorating cakes. dont laugh. its gotten me lots of practice with an air brush :icon16: . we had an old diaphragm compressor and a cake spray gun just sitting back in the office, i asked my manager the other day what it would take to get it. she said 5 bucks....and proceeded to ask if it worked or not, my response was i didn't know and didn't care, i'd fix it for five bucks...and to my surprise, it worked. it has a built in bleeder valve for air regulation, i'm looking for a place to get an in-line guage and moisture trap. any suggestions?

I like the all-in-one from Paasche, but I think each airbrush company makes one.