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Toilet cistern filling as and when, what needs replacing?

Discussion in 'Plumbing and Central Heating' started by Mr Chibs, 30 May 2018.

  1. Mr Chibs

    Mr Chibs

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    Hi all

    My cistern started making an droning noise a month or so back when filling, now, it's louder when refilling after flushing and it's regularly refilling by itself... very early in the morning.

    Is it the 'float' device that's faulty or the flush valve?
    Or would you normally replace both?

    TIA
     
  2. just pumps

    just pumps

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    Depending on the age, sounds like you are describing water hammer so that would be the fill valve.
     
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  4. Combicert

    Combicert

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    If you have an isolator where the toilet connects to the water then you could try turning the flow down as a temp measure... agree with above - fill valve most likely culprit
     
  5. Mr Chibs

    Mr Chibs

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    Thanks gents, and yes there's a knock/hammer sound.
     
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