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Summary: Why a close coupled toilet cistern leaks

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many people these days are fitting close coupled toilets as a replacement for low level suites. This is a problem in itself as the two types of toilet suite are very rarely interchangeable. To see how to get over this problem go to our project on changing toilets.

Close coupled unit The next problem a lot of people encounter is that, the first time they flush a newly fitted close coupled toilet cistern, it leaks. This is such a common Close Coupling kit problem and 99% of the time the answer is the same. The cistern needs to be fitted at exactly 90 degrees to the toilet pan. This allows the large rubber ring washer, or doughnut as it is called, to be squashed flat between the two parts of the toilet. If the cistern is leaning over, even a little, one side of the doughnut lifts and, with a lot of water pressure, the leak is exposed.

If necessary box out the back of the cistern wall to make sure the unit is square.

The close coupling kit on the right shows the doughnut and the fixing bracket underneath. Make sure, having sat the doughnut on square, that you tighten the bracket nuts equally otherwise you will get the same problem.

Top Tools

Click on a tool below for additional information.

Low Level Dual Flush Toilet Cistern 6Ltr	Meridian Vanity & WC Unit White	Sanicompact Cisternless WC & Built-in Macerator	Side Entry Toilet Cistern Ball Valve
Stainless Steel Back To Wall WC Pan	WC Close Coupling Kit	Wc Pan Connector 90 Bend	WC Pan Connector Flexible

Much more construction information is available in our bookstore. All the tools and fittings you need in the toolstore.

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