The flapper came off on our siphon flush, so I bought a new one. I fitted it but it was leaking badly.

When I looked properly, I noticed the inner pipe delivering the water to the toilet from the cistern was not flush with siphon flush. This means the siphon permanently fills up with water as below; enter image description here

Is that normal? Should the connection not be on the outside of the cistern?


I missed it as it was hidden in a decorative metal feature on the toilet.

There is a gasket and a kind of plastic locking plate specifically to tackle this issue.

  • 1
    I'm a bit late, but thanks for the answer. Would you mind adding a picture of the hidden feature to help future visitors? Thanks. – Daniel Griscom Jul 19 '19 at 23:05
  • Also, please give yourself a check mark so others know this one has a working solution. – FreeMan Jul 14 '20 at 14:29

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