After days of looking and prodding at the cistern and the leaking water in the loo I thought I'd check the internet for an answer. I'm clueless on DIY so could anyone give me an idiots guide to stop the leaking? This bubbled ring scenario sounds worth exploring before calling a plumber in but I don't know were to start. Thanks very much.
Geberit dual flush valve leak
- Thread starter someplumb
- Start date
Sponsored Links
Brilliant!.... It's taken me a lot longer to find a forum discussing this problem than it did to fix! I'm not a plumber by any stretch of the imagination, so once I'd plucked up the courage to squeeze the two T shaped latches as described by Guydo and remove the valve the small bubbles on the rubber seal were quite obvious. I did what peterx suggested and simply burst them with a scalpel before refitting the valve to the cistern!... fixed! Thanks wetallover, peterx & guydo for the advice, much appreciated! 
I have a Geberit Twico valve in my cystern, and after a short while after flushing I get an overflow into the pan. This stops after a short while. I have tried raising the overflow tube but to no avail.
Any clues would be helpful. I have tried looking for the proverbial bubbles but not spotted or seen.
Any clues would be helpful. I have tried looking for the proverbial bubbles but not spotted or seen.
Bubbles on the flush valve washer would not cause an overflow.
Have you looked inside the cistern to see if the water is coming from the overflow?
If it is, then it's more likely a problem with the inlet valve.
Have you tried adjusting the float on the inlet valve?
Have you looked inside the cistern to see if the water is coming from the overflow?
If it is, then it's more likely a problem with the inlet valve.
Have you tried adjusting the float on the inlet valve?
Sponsored Links
I have the same problem with water constantly trickling into the loo via the overflow and the hissing sound of water constantly running. No bubbles on the grey washer. There must be a problem with the valve, but i have dismantled and cleaned it as much as I dare. Any help or ideas would be appreciated.
Hi all,
Such a relief to find this forum, we've been having the water tricking into the pan from our Geberit cistern for a week or so now and the fix with bubble popping seems like a good starting plan. Trouble is, I dont know how to get the flush plate off?? Girly I know, but there you are. It's the Artline dual flush, I've pulled and pried as much as I dare but I'm worried I'll break something if there's a cunning trick I need to be employing... any tips for this hopeless DIYer?
Thanks very much
Such a relief to find this forum, we've been having the water tricking into the pan from our Geberit cistern for a week or so now and the fix with bubble popping seems like a good starting plan. Trouble is, I dont know how to get the flush plate off?? Girly I know, but there you are. It's the Artline dual flush, I've pulled and pried as much as I dare but I'm worried I'll break something if there's a cunning trick I need to be employing... any tips for this hopeless DIYer?
Thanks very much
Knowing what make you are dealing with seems to be half the battle. I had exactly this problem of the cistern filling every 20 mins because the flush valve was leaking and took the valve to my local plumbers' merchant, who gave it to their rep for a week. The rep identified it as Geberit and said the whole thing was 30 quid - no spares available - this was Feb 2012. Also, the outlet was 60mm, and getting a new doughnut seal to connect cistern to pan took visits to 6 merchants and about 20 miles driving!
The washer (black) didn't have blisters, but was sort of slimy, and black goo came off it. Flipping it over did no good. I think these valves - all makes - are a bit of a con, promising easy servicing, then you can't get the bits. Cheers for the advice about the O-rings.
The washer (black) didn't have blisters, but was sort of slimy, and black goo came off it. Flipping it over did no good. I think these valves - all makes - are a bit of a con, promising easy servicing, then you can't get the bits. Cheers for the advice about the O-rings.
the geberit twico has a diaphragm at the top of the inlet valve and it wears out, and so needs to be replaced. you buy a replacement inlet valve and swop the inner tube only so you do not have to drain down.just isolate the cistern on the isolation valve.
before you touch the cistern practise on the spare part by separating the two halves so you are aware of what is needed to be done when you get to the real thing
before you touch the cistern practise on the spare part by separating the two halves so you are aware of what is needed to be done when you get to the real thing
my geberit was leaking on and off for the last 2 years - but only after the cistern had filled. recently it just wouldn't stop running. so i called 2 plumbers - one had no idea how to proceed and ran away, and the other who had experience with concealed systems recommended to rip out the wall to gain access to the cistern at a starting price of £320 (don't do this! the cistern is sealed, and the only access is through the 4x6 opening). unless you have a Geberit specialist on hand, this is job you need to do yourself, IMO.
i had been reluctant to unscrew the front plate and start fiddling around with the mechanisms because i feared an out-of-control flood onto the flat below. don't worry about that. the shutoff valve is a blue knob on the left once you get the plate off. turn it off counter clockwise and then flush the toilet.
the plate on my system had visual instruction on troubleshooting what i suppose is the most common problem - running. i didn't know what it all meant at first, but when i got into the guts of the thing and popped the center bit off, i could see what was going on.
to the right is the post that regulates the water flow, knowing when to shut itself off. over a few years, this mechanism can get gunked up, and needs to be flushed under a faucet. but you need to take it off first to clean it, and that's a bit of a struggle. the instructions show you how. you pop it off the screw device on one end and twist it on the other to remove it. don't drop it! i feared this, but it didn't happen. if it happens, just fill the cistern and it should float to the top.
clean it off really good under a faucet, then reattach it - again, a struggle. make sure the sleeve is aligned properly, or the water won't flow when you turn it on again (happened to me). i did all this and everything seemed fixed, then it started leaking worse than ever!
solved: there is another adjustment mechanism which is that screw bit that the end of the blue cap attaches to. by turning the screw, this can to be adjusted up or down to let the system know when to turn off - sort of like the floating ball in a regular toilet. mine was adjusted too high - at about 10 notches above the plastic base. i dropped that down to 20 notches, and that solved the problem. in fact, adjusting this screw mechanism should be the first thing you do in troubleshooting this type of problem.
i had been reluctant to unscrew the front plate and start fiddling around with the mechanisms because i feared an out-of-control flood onto the flat below. don't worry about that. the shutoff valve is a blue knob on the left once you get the plate off. turn it off counter clockwise and then flush the toilet.
the plate on my system had visual instruction on troubleshooting what i suppose is the most common problem - running. i didn't know what it all meant at first, but when i got into the guts of the thing and popped the center bit off, i could see what was going on.
to the right is the post that regulates the water flow, knowing when to shut itself off. over a few years, this mechanism can get gunked up, and needs to be flushed under a faucet. but you need to take it off first to clean it, and that's a bit of a struggle. the instructions show you how. you pop it off the screw device on one end and twist it on the other to remove it. don't drop it! i feared this, but it didn't happen. if it happens, just fill the cistern and it should float to the top.
clean it off really good under a faucet, then reattach it - again, a struggle. make sure the sleeve is aligned properly, or the water won't flow when you turn it on again (happened to me). i did all this and everything seemed fixed, then it started leaking worse than ever!
solved: there is another adjustment mechanism which is that screw bit that the end of the blue cap attaches to. by turning the screw, this can to be adjusted up or down to let the system know when to turn off - sort of like the floating ball in a regular toilet. mine was adjusted too high - at about 10 notches above the plastic base. i dropped that down to 20 notches, and that solved the problem. in fact, adjusting this screw mechanism should be the first thing you do in troubleshooting this type of problem.
I had the same problem with a Geberit UP320 concealed cistern, traced to a faulty side fill valve diaphragm (part no. 240.771.00.1 - shown on p101 of the Product Guide PDF). The diaphragm had perished after 3 years use; symptoms were a hissing after the cistern had filled, then dripping noises and a trickle of water at the back of the pan.
A replacement (£7 + VAT) from Geberit UK spares (01926 516 807) arrived today and I fitted it in 5 mins. Thanks to the other posters on this thread who helped me save the £70 a plumber would have charged to sort this ****ing annoying fault.
I've scanned the fitting guide in case it's of help to anyone:
A replacement (£7 + VAT) from Geberit UK spares (01926 516 807) arrived today and I fitted it in 5 mins. Thanks to the other posters on this thread who helped me save the £70 a plumber would have charged to sort this ****ing annoying fault.
I've scanned the fitting guide in case it's of help to anyone:
My problem with an old geberit twico is noise. Frequently flushing produces a low vibration noise during inital flushing. It is a recent but intermittant noise . I have taken the valve cylinder off but can see no obvious problem. I turned the rubber valve seal over but problem still there. The noise is a bit like a f**t and lasts 1-2 seconds. Any ideas?
I can't thank all of you on here enough, I took my time stripping my leaky cistern down and hey presto, there were the little blisters causing the problem. Very satisfying popping them, gave everything a good clean while i had it to bits and it works a treat now. I couldnt physically see water leaking into the basin and even dried the rim to check for any moisture build up so I was worried the cistern itself was cracked. Thankfully all your posts have probably saved me about £50 thanks again!!!
Thank you to everyone, i am so glad i found this site, i have been having problems for so long with my Laufen Toilet and the leaking i was just about ready to give up and buy a completely new cistern. I followed the advice and burst the bubbles, end of problem. I did find a new valve which looks like a completely different material now from Toiletspares UK, it is more expensive than the rubber type one but hopefully i will not encounter this problem again. Probably why they changed it. Thanks again.
I found this forum very useful - Thanks everyone.
I've had the same problem but the bubbles on my seal are not full of water so I've had to order a spare directly from Geberit which is now made from silicon rather than rubber and is less than a fiver including P&P
The Geberit Part number I needed was 816.418.00.1 (Flush valve seal)
The phone number for Geberit parts is 01926 516 807 and they were very helpful - Sounds like a really common problem
I've had the same problem but the bubbles on my seal are not full of water so I've had to order a spare directly from Geberit which is now made from silicon rather than rubber and is less than a fiver including P&P
The Geberit Part number I needed was 816.418.00.1 (Flush valve seal)
The phone number for Geberit parts is 01926 516 807 and they were very helpful - Sounds like a really common problem
I found this forum very useful - Thanks everyone.
I've had the same problem but the bubbles on my seal are not full of water so I've had to order a spare directly from Geberit which is now made from silicon rather than rubber and is less than a fiver including P&P
The Geberit Part number I needed was 816.418.00.1 (Flush valve seal)
The phone number for Geberit parts is 01926 516 807 and they were very helpful - Sounds like a really common problem
I've had the same problem but the bubbles on my seal are not full of water so I've had to order a spare directly from Geberit which is now made from silicon rather than rubber and is less than a fiver including P&P
The Geberit Part number I needed was 816.418.00.1 (Flush valve seal)
The phone number for Geberit parts is 01926 516 807 and they were very helpful - Sounds like a really common problem
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
Sponsored Links
