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Problem with replacing shower arm

Discussion in 'Plumbing and Central Heating' started by Phil Murray, 14 Nov 2021.

  1. Phil Murray

    Phil Murray

    Joined:
    14 Nov 2021
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    Country:
    United Kingdom
    Hi All,

    I'm looking for some advice on replacing a shower arm that I discovered ended on 15mm copper pipe. I was expecting some kind of compression adapter that I could just screw into but its just bare copper pipe as shown below.

    [​IMG]
    [​IMG]

    The end of the pipe sits just below the tile level and looks like the other end has been soldered.

    The previous arm had what I think is a compression fitting hex bolt -
    [​IMG]

    But my new arm, hansgrohe 27411000, does not
    [​IMG]

    Anyone any idea what my options are here?

    Thanks for taking the time.
    Phil Murray
     
    Last edited: 16 Nov 2021
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  3. RandomGrinch

    RandomGrinch

    Joined:
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    Location:
    Wales
    Country:
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    Hi,

    I'm just a DIY'er, so feel free to ignore! :)

    Ideally you would have found something like this behind your tiles:

    ae235.jpeg

    Fixed firmly, ready for your new arm to screw into!

    What came off the old arm was a 15mm compression fitting.
    Has the new arm got a chamfer like the old arm? If it has a square edge then you may need a G1/2 female to 15mm compression fitting:
    https://www.screwfix.com/p/flomasta-compression-adapting-female-coupler-15mm-x-/93992

    Which is a shame, as the thread size of the new arm should match that of the old. It would also project further from the wall, and would be a pain to tighten up.

    Alternatively you could get a 15mm push fit to G1/2 fitting:
    https://www.toolstation.com/pegler-yorkshire-tectite-sprint-fi-coupling/p35693

    But again, it would stand away from the wall and you would have to find a way to stop the arm from rotating!

    Personally, I may be tempted to remove the tiles and have a go at installing the proper fitting.

    But I'm sure others will have better ideas!
     
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