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toilet overflow pipe constantly dripping


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Old 04-10-2010, 21:52
craigy132
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the overflow pipe at the back of the house is constantly dripping, it stops for a while when the toilet is flushed.
Ive taken the top off the toilet ( dont know correct terminology ) and it seems to be filling right up to the top of the tank, its literally on the edge of the plastic tube thingy which I imagine would be the overflow.
However it doesnt seem to be going over this overflow tube in the toilet.
So to recap, the toilet tank seems to be overfilling but not quite to the point where it is overflowing but flushing the toilet seems to stop the dripping, when I manually lift the ballcock in the tank it stops the filling.

Reading this back it all sounds like gobbledy gook but never know someone might make sense of it! Any advice much appreciated
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Old 04-10-2010, 22:04
Keefy-boy
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There should be an adjustment screw in there somewhere near the arm of the ballcock that will make it shut the supply off at a lower water level. Screw it in a bit!
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Old 04-10-2010, 22:18
Bypassall
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Or a six-sided nut on the end of a long thread that presses against the valve as the floaty bit comes up.
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Old 04-10-2010, 22:22
camer
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or you could have a bit of grit lodged in your valve, have you had any work being carried out to water mains in your area lately?
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Old 04-10-2010, 22:24
Andykel
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Try pulling up the float, if this stops the drip then you'll just need to adjust the ballcock as above. If it doesn't then chances are you'll need to replace a rubber seal inside the ballcock assembly. Both very easy fixes, you can pick up the seal from any DIY store for pennies.
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Old 04-10-2010, 22:46
Cornucopia
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Try pulling up the float, if this stops the drip then you'll just need to adjust the ballcock as above. If it doesn't then chances are you'll need to replace a rubber seal inside the ballcock assembly. Both very easy fixes, you can pick up the seal from any DIY store for pennies.
Definitely check the ball-cock adjustment.

I had to replace the valve washer in my cistern a few weeks ago. I never did find a direct replacement from a DIY store (and I checked all the usual suspects). In the end, I used superglue to fit a new rubber washer to the old assembly. Works perfectly.
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Old 05-10-2010, 09:01
fondantfancy
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Another thought.

Is the ballcock a tight fit - does it scrape up the side of the tank? Mine does and it
works fine but I once used one of those toilet cleaner blocks that you drop in the tank. This
stopped the ballcock from fully rising - I assume it created some sort of film on the
side of the tank that made the ballcock stick before it rose fully..

Removed the cleaner and all was well.

If simple measures fail you may need to call a plumber, these things don't last forever.
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Old 05-10-2010, 09:54
gemma-the-husky
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maybe its worn out and needs replacing

as the ball rises it should close the spout out of which the water flows. if it doesnt the water keeps feeding in, and you get an overflow

the water must be coming up level with the overflow outlet, surely?

thats why pulling the chain stops it - the water level drops.

simples
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Old 05-10-2010, 10:02
Charlie_the_cat
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Try pulling up the float, if this stops the drip then you'll just need to adjust the ballcock as above.
maybe its worn out and needs replacing

as the ball rises it should close the spout out of which the water flows.
Can't you guys read?

when I manually lift the ballcock in the tank it stops the filling.
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Old 05-10-2010, 10:11
c4rv
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When I manually lift the ballcock in the tank it stops the filling.
In which case, either the ball bock is not raising enough due to an obstruction or the should be a screw that you can adjust where the ballcock arm is attached to the value. This will allow the valve to be closed sooner then it currently is.
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Old 05-10-2010, 10:13
susie-4964
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Sometimes you can't adjust the screw any further, so you might have to invest in a new ball cock. I'd suggest getting a metal one, the plastic ones are rubbish.
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Old 05-10-2010, 10:35
excelents
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the overflow pipe at the back of the house is constantly dripping, it stops for a while when the toilet is flushed.
Ive taken the top off the toilet ( dont know correct terminology ) and it seems to be filling right up to the top of the tank, its literally on the edge of the plastic tube thingy which I imagine would be the overflow.
However it doesn't seem to be going over this overflow tube in the toilet.

So to recap, the toilet tank seems to be overfilling but not quite to the point where it is overflowing but flushing the toilet seems to stop the dripping, when I manually lift the ballcock in the tank it stops the filling.

Reading this back it all sounds like gobbledy gook but never know someone might make sense of it! Any advice much appreciated
I had this for quite a while thinking that it was the overflow pipe for the toilet but it wasn't although the pipe emerged out the wall at the back of the house near where the toilet is so I assumed it was that.

It turned out to be the main tank filling to a certain point as you say then stopping when I did the same as you. I complained to my Landlord (useless t***) and they came round had a poke and a prod in the tank, did something and it stopped for about a week and started again.

I gave in and sorted the problem myself, its a private rent property so I didn't get a workman in. My solution was a simple one.

I climbed up the ladder to the dripping pipe then attached a piece of old garden hose (as its bendy and flexible) then put the other end into the top of the open main external house pipe.

Here is a picture
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Old 05-10-2010, 10:38
crazychris12
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Ours has been dripping for two years now and adjusting the ballcock screw didn't make any difference so we just put a bucket under the overflow pipe outside.
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Old 05-10-2010, 10:42
gemma-the-husky
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cant you guys afford a fiver for a new ball cock?

you dont realy want water dripping down the side of your house, you know.
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Old 05-10-2010, 10:46
mossy2103
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Sometimes you can't adjust the screw any further, so you might have to invest in a new ball cock. I'd suggest getting a metal one, the plastic ones are rubbish.
Or you can carefully bend the copper rod to which the ball is connected so that the ball rests lower (and therefore causes the valve to shut off earlier). Yo must do this with the rod removed otherwise you risk straining the whole assembly.

One other thing that it could be - where the rod fits into the valve assembly, there might be too much side-to-side play, allowing the ball to rise to one side slightly) meaning that that the valve will shut off later than it should. I had this happen to me last winter and I got round it by adding a couple of thin plastic washers (made out of a plastic washing-up liquid bottle in true Blue Peter style).
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Old 05-10-2010, 10:48
excelents
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cant you guys afford a fiver for a new ball cock?

you dont realy want water dripping down the side of your house, you know.
In my case yes but it is a private property and I have told my Landlord that it could well be a new ballcock etc however he obviously didn't listen when I also told that the water would be working its way into the foundations etc.
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Old 05-10-2010, 11:15
*marv*
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You may need to adjust the highest balance of the ballcock, this is what I did and has stopped the problem.
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Old 05-10-2010, 11:32
susie-4964
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Or you can carefully bend the copper rod to which the ball is connected so that the ball rests lower (and therefore causes the valve to shut off earlier). Yo must do this with the rod removed otherwise you risk straining the whole assembly.
Some of the seriously rubbish plastic ones have plastic rods as well! I can remember my dad years ago doing this, bending the rod just a bit. Last time I had the ball cock replaced, I asked the plumber to put in a metal one just for this reason, so you get the two options of adjusting the screw or bending the rod ( sounds a bit pornographic!!).
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Old 05-10-2010, 12:18
Prontopro
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Ours has been dripping for two years now and adjusting the ballcock screw didn't make any difference so we just put a bucket under the overflow pipe outside.
In your case you need to fit a new washer.

A few pence from your local B&Q for a new washer and 5 minutes to fit it. Job done.
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Old 05-10-2010, 17:41
tvtimes
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It's your ball cock that needs re-washering.
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Old 19-10-2010, 16:17
craigy132
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A thousand thankyous for all the advice folks!
Il definately try some of your ideas and post back whether they were successfull or not.

Guess what Im struggling to get my head around is the fact that yes the cistern is filling right to the top but it isnt quite full enough to enter the plastic overflow pipe in the cistern so whilst the dripping is related to the toilet somehow it isnt actually coming directly from the toilets overflow pipe in the cistern, but then again I aint got the foggiest about anything plumbing related
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Old 19-10-2010, 16:21
crazychris12
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cant you guys afford a fiver for a new ball cock?

you dont realy want water dripping down the side of your house, you know.
It drips straight in to a bucket!!
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Old 19-10-2010, 16:22
crazychris12
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In your case you need to fit a new washer.

A few pence from your local B&Q for a new washer and 5 minutes to fit it. Job done.
Thanks, will see to that.
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Old 19-10-2010, 18:15
tvtimes
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A thousand thankyous for all the advice folks!
Il definately try some of your ideas and post back whether they were successfull or not.

Guess what Im struggling to get my head around is the fact that yes the cistern is filling right to the top but it isnt quite full enough to enter the plastic overflow pipe in the cistern so whilst the dripping is related to the toilet somehow it isnt actually coming directly from the toilets overflow pipe in the cistern, but then again I aint got the foggiest about anything plumbing related
Have you checked for any cracks lower in your overflow pipe? If your overflow is leaking but the cistern isn't filling past the overflow then there must be a crack or something causing water to enter the pipe.
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