I plumbed with black pipe with an angle dropping back to compressor and I have one drop as a relief valve and one goes to HF industrial filter and the flexible hose. All home depot stuff cost 100 bucks (2 car garage) and I used all day doing priming, painting etc. Not a drop of water through my tools or spray gun. when I released air pressure from compressor and relief valve lot of water came. It is working very good for me.
My experience
Ganesh
