Hi, not sure if it's on the right thread, but seeing the photos made me wonder, I have a moisture trap on the compressor outlet but have seen alot of pictures with airbrushes with them at the
airbrush end, I only need one, is this right.
I'm an
airbrush newbie but I can't imagine it would make a lot of difference with the tiny amounts of air running through an
airbrush system, unless you are in a very humid climate. In my world of full size spray guns it does make a big difference though, and the water trap should be as far from the compressor as possible.
The reasoning behind this is the temperature of the air. When you're compressing 20, 30, 40+ CFM the air leaving the compressor or tank will be hot. In this state it can hold a huge amount of water as vapour, which will simply pass straight through a trap, only to condense out as actual moisture further down the line as it cools. For this reason many large compressors include a refrigerated dryer, which cools the air down to a few degrees C, condensing out that moisture before it gets into the air system.
Without such a dryer, another way is to have a decent length of pipework before your trap, allowing the air to cool so that the trap can actually do it's job and collect that condensate. My big compressor at home runs through 5M of pipe before the trap, and the amount of water it collects proves its effectiveness. A large bodyshop would place their traps at the end of a decent run of (preferably metal) pipework.
But like I say, that's all probably overkill for an
airbrush system working at less than 1 CFM. If you aren't getting water coming through your
airbrush then I wouldn't worry.