Carl Meyer wrote: ... >it was the thickness of the copper. There is green, blue and red. He >said that Green is made for air and is cleaned on the inside (used in >hospitals etc.) Also expensive. What about other types of plastic pipe - e.g. PEX which is typically used for the pressure side of plumbing? Rated up to 160 psi at room temp, not brittle and not nearly so expensive. Also easy to install. Don't know about using it for pressurized air though. -Mark
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