Toilet waste - funny size?

SteUK · 16 May 2016

Hi all,

Wonder if anyone out there can offer some advice regarding connecting up a toilet pan to the existing waste outlet.

I pulled out the old pan and waste, and bought a flexible pan connector. I managed to get the end into the wall socket using the existing rubber gasket, but only after a decent amount of force and lube was used. The gasket that came with the pan connector (110mm) was just too big diameter wise.

This has left me worrying about something collapsing/cracking in due time because of the incorrect tight fit.

Here are pictures of the old bits, and the new flexible hooked up to the outlet on the wall. The old plastic reduced measures 88mm at the thin end.

Another possible bit of relevant info...with the new pan pushed back in the correct place the flexible hose is almost entirely squared, but for a single rib to angle it down to the outlet on the wall (which is sitting maybe 10 degrees pointing upwards off horizontal).

Thanks in advance!
Ste

Aquaheat · 17 May 2016

Get rid of the flexi and get am offset pan connector and reducer as you have already got or use the existing?

SteUK · 17 May 2016

New toilet is a back to wall type so flexi makes it a lot easier. Plus the slight incline that is in the wall outlet makes it interesting! Also the new pan is further away from the wall than the old one.

SteUK · 17 May 2016

Is it a 3.5inch sized end connection I need?

HERTS P&D · 17 May 2016

Gloves?

Andy

denso13 · 17 May 2016

SteUK said:
Is it a 3.5inch sized end connection I need?

Possibly, used to be quite a common size and Multikwiks for one come in that size.

Madrab · 17 May 2016

If you think the 4" (110mm) is too tight and you can't get the connector fully home then 3 1/2" (90mm) may be better. If the 4" is in fully and tight enough though then it shouldn't have an issue in the future.

Steelmasons · 17 May 2016

Common practice to branch off 4" LCC soil and vent with 3 1/2" to pan..

SteUK · 18 May 2016

Awesome. Thanks all for the input. Ordered a 3.5 flexible from local merchant.

The tightness of the 4 inch was worrying me. So I pulled it and put the old adapted in the chain. Fit is much better. It was a real struggle to get the 4 inch off(!) so I know it was the right decision.

I have also discovered that you are not a real man/woman until you have been up to your elbow in a soil pipe pulling with all your might!

Will let you all know how I get on with the 3.5 inch when I get around to fitting the new pan.