Toilet waste lower than soil pipe

[ladwey]

Hi -- I'm replacing a manky old toilet and the new one has a pan waste which is slightly lower -- bit less than 10mm, by my estimate. There's an old cast iron pipe that comes in through the wall; whoever installed it put an offset connector in to raise it up to the level of the old toilet. It seems like the way they did this was to fix the connector into the iron with some kind of plastic cement, I suppose to get round the difference in diameter between the plastic and metal. I've attached a couple photos to show what I mean. I'm assuming that even a very small upward angle coming out of the pan is a total no-no. What's the best way to get round this?

I guess I could sit the new toilet on a little plinth -- I've got various thicknesses of tile backer board that would do, and could silicone round the gap this would produce at the base. I could also chop out the old plastic connector, but I'm wary about that if it would mean having to fix a new connector in in the same way as the old. Additionally, the flange on the plastic connector is a little bent, and I'm not sure whether that will affect the integrity of the seal when I insert anything into it. Any advice would be very welcome.

 

[denso13]

Fit an extension A if 4" or extension B if 3½" coming through the wall, with an angled connector. Looks like it will all fit ok.

McAlpine MAC-EXTA Macfit Straight Extension Connector

Rigid WC pan connector for use with 4" (110mm) pipe. Manufactured in EVA with synthetic rubber and moulded finned seals. MACFIT incorporates a new 'lock ring' inlet seal to give superior, tighter connection to WC pan outlets. Suitable for all 4"/110mm PVC-U and cast iron soil pipe.• 4"/110mm...

www.toolstation.com

McAlpine MAC-7A Macfit Angle WC Connector

Rigid WC pan connector for use with 4" (110mm) pipe. Manufactured in EVA with synthetic rubber and moulded finned seals. MACFIT incorporates a new 'lock ring' inlet seal to give superior, tighter connection to WC pan outlets. Suitable for all 4"/110mm PVC-U and cast iron soil pipe.• 4"/110mm...

www.toolstation.com

 

[ladwey]

Thanks! So cut out the old connector, and the new one should fit in ok without all the sealant?

 

[denso13]

It should pull out, looks like like the joint is covered in silicone.

 

[ladwey]

Yup, got it out ok. The pipe's a peculiar dimension -- 110 across, 130 down, which I guess is because it's cut at an angle. The 4" extension connector ought to do it.