Right chums, Basically I have just bought myself a clarke sec16C150 air compressor and want to run air lines in my garage. The compressor, due to its largish size, will be housed in a small shed type thing outside my garage, firstly to keep noise down and secondly to give me more room in the garage.

What I fancy doing is running copper pipework in the garage with 2 outlets, one for spray gun and one for air tools. This garage isnt huge so im not too worried about pressure drop of a large run. Would I be better off running the pipework in 22mm copper or 15mm copper. Im just worried that by using 15mm copper it would restrict the air flow too much and would be pretty useless.

Hope that makes sense

Neil