I am not sure if I am using the right name, but I want to run a hard line between my 60 gal compressor and the filter I am going to use. I will be using a Quincy that has max PSI of 175 and 15.2 CFM @ 175 PSI. The filter manufacturer states I need to have at least 25' of line between the compressor and the filter. So I am going to run something along my back wall and build in a quick disconnect so I can move the compressor (it will be on a mobile base). Should I use copper or galvanized? Copper is pricier so not sure if it's worth the extra cost. What can I use for the flex connection between the compressor and the hard line? Hydraulic hose? Any other tips/advice for this kind of project?