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    Brett 13's Avatar
    Brett 13 Posts: 1, Reputation: 1
    New Member
     
    #1

    Mar 18, 2018, 12:04 AM
    Flushometer loud thud near end of flush
    We have an old fashioned flushometer, replaced about 3-4 years ago.For the last month it produces a very loud thud near the end of a flush.
    talaniman's Avatar
    talaniman Posts: 54,327, Reputation: 10855
    Expert
     
    #2

    Mar 18, 2018, 10:03 AM
    Valve closing to fast, or a loose pipe knocking against a joist or structure. Depends on exactly where you hear the noise. If from the unit you may be able to adjust the water flow, or just replace the valve, check diaphragm, or clean/replace the bypass. The simplest test is slowly adjusting water flow, and see if that quiets the thud.

    https://www.youtube.com/watch?v=Upkq8qIwD5M

    Or you have a water hammer condition in which case it gets more complicated.

    https://www.youtube.com/watch?v=lpT_-3HR5yo
    Milo Dolezal's Avatar
    Milo Dolezal Posts: 7,192, Reputation: 523
    Plumbing Expert
     
    #3

    Mar 21, 2018, 07:49 PM
    What do you call "flushmeter" ? Do you have toilet without tank ?

    Milo

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