Just a note on the copper pipe used in some older Airstreams. It may be copper refrigeration pipe not plumbing pipe. The diameters are different. My 77 has refrigeration pipe and came with a broken pipe. Nothing at the hardware stores was the right size, but, I was able to find the appropriate splice at a refrigeration supply house. Once you find the right parts, they all solder together the same way.
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Past President, Vintage Airstream Club, WBCCI # 7291
1977 Argosy 28 Center Bath (CA made) and 2015 Ford F250 6.7 diesel. Used to own 1978 Argosy Minuet 6.0 and 2013 Toyota Tundra
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