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Discuss Rounded retaining nut. in the Valves & Taps area at

  1. Letdown

    Letdown New Member

    Hi All,Iam trying to change a quarter turn ceramic disc valve on a shower mixer lever tap.The nut is only accessable using a 18mm socket.The only problem the nut which is brass has been rounded.Any advice will be much appreciated.
  2. rpm

    rpm Trusted Plumber

    Gator socket?
    Socket with steel pins inside, one size fits all?
  3. rpm

    rpm Trusted Plumber

    Hammer on a 11/16 AF socket.
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  4. Letdown

    Letdown New Member

    Think i'll try the gator socket.Many Thanks
  5. rpm

    rpm Trusted Plumber

    If it is really badly rounded the gator may not work however 11/16 AF is slightly smaller than 18mm and a regular AF size and Brass is soft metal.
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  6. gmartine

    gmartine GSR

    Wacking on the next size or two down in imperial works for me if not something for the job... okay on steel not sure about brass especially of the nut depth is small...

    Erbauer Bolt & Nut Remover Set 6 Pieces
    Last edited: Nov 15, 2017
  7. leelister6

    leelister6 Plumber GSR

    Mole grips or a new tap
  8. YorkshireDave

    YorkshireDave Active Member

    18mm is a really unusual size. Sure its not 17? Without a pic its difficult to say, but often these things have removable collar so you can get at the cartridge which needs to be removed first.