Change WC overflow?

Is it possible to change a WC cistern from a piped overflow (with an external through-the-wall spout) to an internal overflow (into-the-pan) by means of replacing the valve/siphon arrangement - or do I have to change the cistern itself (or even the entire WC)?

8 Answers

Weaves Interiors & Outdoors
51 Reviews, 96% Positive
You can buy internal siphon with built in over flow and put a blank where the old over flow pipe come out.
18th Jan 2020
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All in one
2 Reviews, 100% Positive
You can change the layout of your cistern . The kit you will get easy for an internal overflow , just be certain to get the right stopper for the hole where your old overflow drained through the wall .you can then cut away the pipe through the wall and fill it . Depending where it is positioned (some people) put a vent over it which gives more air into the room .
20th Jan 2020
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All needed is to fit a Syphon flush with built in overflow and when levels reach to unsafe level water will disperge into WC bowl .then can remove old overflow and fill in any holes in wall
28th Jan 2020
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Epm construction
0 Reviews
Most modern siphon incorporate an internal overflow which expels in to the pan so can be as simple as changing the siphon
26th Jan 2020
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Anthony Rose
122 Reviews, 96% Positive
Hi there, it's possible to change the internal parts.
The moden cistern parts have a internal overflow, however fur the installer it is a difficult job because with most old toilets, bolts and screews are rusty and stuck.
Most installers will recommend a new toilet. But the internal parts replacement is a skilled job and requires a good installer.
1st Feb 2020
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JK Powerflush UK - Plumbing & Heating
2 Reviews, 100% Positive
No you can simply change the syphon to a Dudley turbo 88 syphon which has an internal overflow allowing the external overflow pipe to be removed completely.
13th Feb 2020
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Yes it is possible you can by a flush mechanism with overflow and cap the old one off
18th Feb 2020
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Yes it is. You need an integral overflow syphon. They come in all styles i.e pushbutton, lever etc.
You will need to take the cistern off to remove the old syphon and fit the new one. If you order online, make sure the base diameter of the syphon (the threaded bit that goes in the cistern's hole) fits the cistern's hole.
22nd Feb 2020
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