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Discuss Grohe inlet valve(Grohe Rapid 3 in 1) in the Fittings & Pipes area at

  1. Neil Davenport

    Neil Davenport New Member

    Hi, if anyone can advise me on the following i would be grateful.
    The images attached show the water inlet/isolation valve that comes with the grohe 3 in 1 toilet frame. The large connector appears to be 1/2" male and is tapered. the instructions are not clear what fitting this should connect to behind the cistern. With it being tapered does it require something specific?

    Any advise appreciated


    20180801_103033_1280x720.jpg 20180801_103057_1280x720.jpg 20180801_103120_1280x720.jpg
  2. oz-plumber

    oz-plumber Plumber

    if you're talking about the thread on the right of the first image, that part is outside the cistern.
    Any 1/2" female fitting should fit onto that.
    That is a connection that will not be accessible after the cisten has been installed, so make it a good one
  3. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

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