Abouty to install a replacement WC, and wanted to utilise 'internal overflow' rather than connecting the external one due to lack of an outside wall to take a pipe through....
On looking at the plastic syphon, I couldn't see where the internal overflow was - I was expecting to see some sort of 'down pipe'. Eventually I concluded that I'd have to get a different type, and went to our local outlet of a well known chain of plumbers merchants.
I took the original (still brand new) syphon with me, and said I needed one with an internal overflow. The guy looked thoughtfully at the original one, and then went off and came back with a virtually identical item, which he duly charged me fifteen quid for.
On getting home, I did the following:
1. puzzled over the two syphons side by side
2. Looked on google and found a simple explanation http://www.bmf.org.uk/media/sample_wcflushingsyphons_sguide.pdf
3. Banged my head against the table for a while and cursed myself for being so stupid.
I just want to check I haven't missed anything here - it really is as simple as making sure that the top of the 'U' bend part (internally) is just above the normal water level?
I'll be going back and asking for a refund tomorrow, unless I've totally misunderstood. Maybe I'll see if they've got any left handed screwdrivers or long weights in stock while I'm there.
(Interestingly of the parts supplied with the toilet, there's an external overflow pipe, and there's a hole pre-drilled in the bottom of the cistern but no blanking plug should you choose not to use it! And seemingly well known plumbers merchant chain doesn't stock blanking plugs - he looked as though it was a bit of a specialist part, and redirected me to a local independent shop who sell them instead.....)
On looking at the plastic syphon, I couldn't see where the internal overflow was - I was expecting to see some sort of 'down pipe'. Eventually I concluded that I'd have to get a different type, and went to our local outlet of a well known chain of plumbers merchants.
I took the original (still brand new) syphon with me, and said I needed one with an internal overflow. The guy looked thoughtfully at the original one, and then went off and came back with a virtually identical item, which he duly charged me fifteen quid for.
On getting home, I did the following:
1. puzzled over the two syphons side by side
2. Looked on google and found a simple explanation http://www.bmf.org.uk/media/sample_wcflushingsyphons_sguide.pdf
3. Banged my head against the table for a while and cursed myself for being so stupid.
I just want to check I haven't missed anything here - it really is as simple as making sure that the top of the 'U' bend part (internally) is just above the normal water level?
I'll be going back and asking for a refund tomorrow, unless I've totally misunderstood. Maybe I'll see if they've got any left handed screwdrivers or long weights in stock while I'm there.
(Interestingly of the parts supplied with the toilet, there's an external overflow pipe, and there's a hole pre-drilled in the bottom of the cistern but no blanking plug should you choose not to use it! And seemingly well known plumbers merchant chain doesn't stock blanking plugs - he looked as though it was a bit of a specialist part, and redirected me to a local independent shop who sell them instead.....)
