The replacement cistern syphon I fitted a couple of days ago ...A Delchem Multiflush...has a built-in overflow .
The existing overflow exits from the bottom of the cistern via a pipe through an outside wall but I'd like to get rid of that if possible as the pipe is unsightly so what I want to know is
Are these internal overflow's reliable ?
and
If I remove the existing overflow pipe in the cistern what should I use to blank it off..?
Stuart