Slow draining sink, plumbing
This is similar discussion to another previous one, we have an East Fifer camper van, and the sink is slow to drain, a couple of observations, there doesn't appear to be the conventional p trap, to trap smells as you would get with home plumbing, but also shouldn't there be a breather pipe to the grey water tank to let air out, as the sink water goes in. Is this normal practice?
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No P traps is normal and providing you clean your tank yearly and don't wash too much food or milk residue down the sink you shouldn't have a problem with smells. As for a breather, the washroom sink acts as a breather on mine. If your sink blows back and bubbles whilst draining then that proves the tank needs venting to let air out. Sinks are normally slow because the bore of the pipe is so small and corrugated piping can also slow the flow. If a previous owner has washed fat down the sink you could have partially blocked pipes.
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we don't have corrugated pipe from sink/shower to waste tank, we have a 'clear/white' strong wide(ish) bore plastic pipe which runs freely and stays clean....you can sometimes even hear the water rush to the tank...
it costs little more to put in decent plumbing than to put in cheap stuff.
our waste tank has three moulded inlets, one from the kitchen sink, one from the bathroom sink and one from the shower, which has two outlets merged into one pipe.
each pipe run is seperate with no joins (or back blowing) to other routes.
perhaps you could change the pipework?
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Have a look at CAK Tanks. They do a corrugated pipe with a smooth bore, also waste traps. We have a German van and they seem to use waste traps as standard.
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If the grey tank had a simple air vent it would also act as an overflow and some people might let the tank contents overflow onto the pitch. Your fresh tank is an example of this set up.
An effective and reliable air vent that prevented overflow would not be cheap.0 -
BEFORE you start getting all technical try this :--
Take a couple of common or garden bamboo or similar skewers { as found in many kitchens } one pointed end down, t'other with point up. Inset gently and side by side into slow draining plug 'ole.
Twist the two together 'tween thumb and forefinger as if screwing a bottle top for a half dozen twists.
Then Gently remove them together onto a piece of kitchen roll or similar.
If they come out clean then and only then pursue the expensive or technical options !!
If you Really must spend money { I'm notoriously parsimonious } Then you can buy the commercial version of the skewers at B & M, Home and Bargain or some such stores under the trade name " The Drain Weasel Plus" refills. They come without the handle which ain't really needed, just three on a cardboard backing for a couple of quid [ ouch ]
As for the tank 'Breather' you've got the drain in the kitchen sink, the wash basin And the shower tray as well probably so plenty of outlets for the air, as well as Washing up liquid, shower gels and or hair shampoo to 'sweeten' the vented air.
B
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I had this issue this weekend, being untechnical , I used the old fashioned approach 0f two tablespoons of bicarbonate of soda with white wine vinegar, leave for ten minutes then pour boiling water down each drain ...hey presto ... good as new , the water ran away quickly....
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