Blocked sink drainage

Discussion in 'Tech/Mech General' started by Southampton, Apr 6, 2012.

  1. Southampton

    Southampton Funster Life Member

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    We are sat on Wykes Farm site at Andover for Easter and the kitchen sink is blocked. I can get it to drain very slowly by agitating it with a plunger but clearly something is blocking it. The shower and toilet sink drain okay. The question is, can I use Mr Muscle or some other drain cleaner without damaging any of the pipes? Or any other suggestions welcome.

    Derek
     
  2. aba

    aba

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    if you look under the sink there may be a smell trap with a unscrew-able bottom.
     
  3. Southampton

    Southampton Funster Life Member

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    Thanks Andy, could not see anything under the sink the pipe disappears behind the cooker. I will see if I can see anything from underneath the van in the morning.
     
  4. pappajohn

    pappajohn Funster Life Member

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    as already said, there may be a small round trap in the waste pipework underneath the van floor in the external pipework to the grey tank.

    usually about the size of an old KIWI boot polish tin but a little thicker with the waste pipe entering and exiting on opposite sides.

    unscrew the bottom (if it is blocked you may get a sudden gush of water :Eek!:) and check its clear.

    try boiling water first as its probably grease/fat which has congealed in the waste.

    Mr Muscle etc should be ok but dont get any on the sink surface.....it could stain.

    use a toilet roll tube etc as a funnel to direct the liquid straight into the waste pipe.....SLOWLY, so as not to overfill the 'funnel'
     
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  5. Reallyretired

    Reallyretired Funster

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    Careful with a plunger, you can burst the connections.
     
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  6. philk

    philk

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    Blocked sink

    Every time my sink has gone slow its been congealed fat, I use hot water and fairy liquid and slowly it goes through.

    Phil
     
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  7. MikeandCarolyn

    MikeandCarolyn Read Only Funster

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    When either of our sinks start to drain slowly we have found that Thetford Grey Tank Freshener sorts it out.

    Mike.
     
  8. Southampton

    Southampton Funster Life Member

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    Thanks everyone, now pouring hot water and fairy liquid to see if that works, it is draining but very very slowly. I am guessing that it is more likely to be blocked with a combination of rice and fat as we have had curry on Thursday and it was fine before that. Anyway, next step is to get underneath and see what can be done.
     
  9. MikeandCarolyn

    MikeandCarolyn Read Only Funster

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    I also forgot to mention that,over the 2 yrs period we have been using it,the black coating on the inside of our grey waste tank has completely gone.:BigGrin:

    Mike.
     
  10. rainbow chasers

    rainbow chasers Read Only Funster

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    You will probably need to clean the waste traps beneath as papaohn suggests. they will fill with lots of crud.

    A cheap drain cleaner will work fine. We have used a 'keep it handy' drain cleaner (99p) which does the job a treat, poure a little down, wait 20 mins and rinse with hot water. Do not throw the waste down the elsan point if on site though, as it may have issues in their slurry tanks. (or at least ask)
     
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