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Thread: Copper Pipes Touching Each Other

  1. #1
    DIY Senior Member chefwong's Avatar
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    Default Copper Pipes Touching Each Other

    Just finished the RO for the hot water Feed. Next is the cold water.
    Both are running parallel to each other horizontally.

    Where I go vertical to the drop ear, should I avoid the copper touching each other or is it okay to just lay both vertical and where one touches the other copper....just slip a small piece of pipe insulation between them.

    Last edited by chefwong; 10-12-2011 at 03:14 PM.

  2. #2
    In the Trades Tom Sawyer's Avatar
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    Avoid them touching. In some cases electrolysis can occur and pin hole the pipe there. I would find something more substantial than paper, it will wear through. Perhaps a strip of plastic from a milk jug
    [B]No, plumbing ain't rocket science. Unlike rocket science, plumbing requires a license[B]

  3. #3
    Moderator & Master Plumber hj's Avatar
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    quote: In some cases electrolysis can occur and pin hole the pipe there.

    How can "electrolysis" occur when both are the same metal? Wear is a more likely cause of failure. Either solder the two lines together so they CANNOT rub against each other or insert a substantial piece of material between them and secure it tightly.
    Licensed residential and commercial plumber

  4. #4
    DIY Senior Member chefwong's Avatar
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    I ended up using some 45's , 90s and just bumped it in/out


  5. #5
    DIY Senior Member kreemoweet's Avatar
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    There are special copper fittings available for use in such situations, called "crossover couplings". Very handy in cases where
    it is desirable to keep the pipes in a single plane.

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