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Thread: Shower head arm female thread - best way to plumb

  1. #1

    Default Shower head arm female thread - best way to plumb

    I'm installing a Kohler shower valve and head assembly (from their designer line). The shower head arm has a 1/2" female thread where most shower head arms have a male thread. I'm still in the rough in stage so I have flexibility with how it gets mounted.

    Question: What fitting should I use on the 1/2" copper that supplies the shower head?

    My inclination is to use a 1/2" brass elbow that is most commonly used for standard shower head mounting and a 1/2" brass nipple. My problem with this approach is that I do not know how to mount the nipple to the elbow tight enough to keep it from leaking.

    All help will be greatly appreciated. Thanks in advance.

  2. #2
    Commercial Plumber markts30's Avatar
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    Sep 2006
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    Phoenix, AZ
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    Default

    You can buy brass elbows that are SolderXMIP in hardware stores...
    Then just screw the arm directly onto it...
    For rough in, just make up a piece of copper with a cap on one end and an FIP on the other to put on the threaded 90 till you are ready for trim...
    (remember to allow sufficient clearance around the stub-out for removal of the nipple and install of the trim arm...)I find the easiest way to do that is slip a piece of foam pipe insilation over the nipple while drywalling and tiling...
    That way you end up with a nice even border on the hole...

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