Copper Pipes Touching Each Other

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by chefwong, Oct 12, 2011.

  1. chefwong

    chefwong New Member

    Messages:
    710
    Location:
    District of Columbia
    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.

    [​IMG]
    Last edited: Oct 12, 2011
  2. Tom Sawyer

    Tom Sawyer In the Trades

    Messages:
    3,077
    Location:
    Maine
    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
  3. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,315
    Location:
    Cave Creek, Arizona
    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.
  4. chefwong

    chefwong New Member

    Messages:
    710
    Location:
    District of Columbia
    I ended up using some 45's , 90s and just bumped it in/out

    [​IMG]
  5. kreemoweet

    kreemoweet New Member

    Messages:
    371
    Location:
    Seattle. WA
    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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