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Fitting New Toilet with Soil Pipe into Floor

Discussion in 'Plumbing and Central Heating' started by garash, 18 Feb 2015.

  1. garash

    garash

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    Hi, Can anyone tell me why the measurement from the back wall to the centre of the soil pipe matters? If you have three items, pan, cistern and connecting pipe why does it matter? Once the pan is in place (the only place it can go), and the cistern is situated on the wall above and behind the pan then surely it is just a matter of having the right length of connecting pipe from pan to cistern? Why is it that the measurement of the wall to centre outlet pipe on floor comes into play? This is turning into rocket science!
     
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  3. If you're fitting a close coupled pan/cistern then the distance behind the soil pipe governs if there is sufficient/too much space for the cistern.

    If you're fitting a low/high level cistern & pan then not as critical as long as there is sufficient space between the siphon centre and the flush pipe connection on the pan
     
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  4. Floor soil pipes are not always the same distance. Quite often, when a low level toilet is replaced with a close coupled toilet, you end up with a slight gap between the back of the cistern and the wall. A swan neck pan connector will help but is not always spot on. Also, toilet spigots are not always the same length.
     
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