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Slow draining Wash basin

Jun 22, 2014
391
294
Great Totham
Funster No
32,076
MH
Dethleffs GlobetrotterXLi
Exp
Since 2015
Just to confirm, are the "hand sink" and "bath sink" both referring to the wash basin in the toilet?
Yes I was sorry I didnt make it that clear.

My Kitchen is larger also, and that might make some difference but my moneys on the trapped air theory.

My pipework is 28mm rigid pipe. Some of the fallaway is not great but the kitchen sink is fine and it all goes down the same pipe eventually so I'm ruling out blockages.

I'm also thinking of a breather or even fitting in an overflow but not too keen on drilling my sink.
 
Jul 12, 2013
2,560
2,392
The City of Henlow
Funster No
26,906
MH
Adria Supreme
Exp
Since 1980
My kitchen sink drain is excellent unless food particles begin building up.
It is the vanity basin, situated in the centre of my van, that is slow. Oddly one of the two shower drains can be slow to drain, depending on how level the ground is. This could be a clue.
 
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