Depends on what you plan to do with it. Everybody has covered the option to just charge the clamps. Almost anything will work. If you want to get serious, like an HVLP system, then you're into a whole different ballgame.
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I use a Quincy 5hp, 80gal compressor feeding a 3/4" copper header via a large desiccant filter. I used Harris Bridgit high temp and pressure solder. Regular plumbing solder gets soft at high temps and can blow out. The copper helps keep the air cool and doesn't rust like black iron. Then I have multiple 1/2" drops feeding retractable hose reels. I have a 1/2" hose for the HVLP, 3/8" for general purposes and a 1/4" reel above the workbench. This setup works great for me, but it's total overkill to just feed your clamps.?
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Under no circumstances should you use PVC. It turns into shrapnel eventually.?
