Noisy sink emptying

Discussion in 'Plumbing and Central Heating' started by paul243, 6 Aug 2021.

  1. paul243

    paul243

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    Both the kitchen and bathroom sinks have a loud gurgling when emptying. No sound at first but loud at the end of emptying. Neither seem to have vents on the traps, is that the cause?
    Any fix?
    Thanks
     
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  3. Bosswhite

    Bosswhite

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    Sounds like partial blockage , check inspection chambers , sink traps etc
     
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  4. CBW

    CBW

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    Recently or always happened?
     
  5. paul243

    paul243

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    Worse recently
     
  6. paul243

    paul243

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  7. HERTS P&D

    HERTS P&D

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    Have a look in the manhole.

    Andy
     
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  8. paul243

    paul243

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    Thanks Andy, outlet goes direct to open drain, all clear and clean
     
  9. Madrab

    Madrab

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    How long is the run till the waste hits the soil pipe? Gurgling is usually down to self syphoning, where the run is overly long and the slug of water in the waste is then pulling on the trap. Get an anti vac trap and that'll stop it.
     
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  11. paul243

    paul243

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  12. Madrab

    Madrab

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    Yup, that'll do it, straight swap if it's replacing an existing P trap
     
  13. paul243

    paul243

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    Thanks Rob, I'll get one from my local PM.
     
  14. Madrab

    Madrab

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    .
     
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  15. paul243

    paul243

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    Difficult access to measure, will it be 40 mm under a sink?
     
  16. Madrab

    Madrab

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    As a standard, it should be at least 40mm.
     
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