multikwik connector too large for cast iron pipe

[topper harley]

Hi chaps, I have a 4 inch cast iron toilet waste pipe I need to extend. unfortunately now I have cut the collar off the pipe and can now measure the bore of the pipe, I have discovered the inside diameter is 97mm. The multikwik extension pipe I have is only suitable for a pipe diameter of 99mm to 105mm therefor too large for my CI pipe. When I try to fit this, the extension pipe buckles and will not provide a watertight seal. I have checked the multikwik website and I notice they do not make an extension pipe for a 97mm pipe.

Any thoughts on what I can try to do next. Perhaps there is a sleave available that I can 'jubilee clip' to the outside of the CI pipe (OD 110mm).

many thanks

Topper

 

[seco services]

no but mcalpine one will fit.
90-118mm

 

[topper harley]

nice one seco, I didnt realise other manufacturers also made these.

thanks for the info and the speedy reply!

your a star

Topper

 

[Anybody]

Multikwik do them in different sizes. I have always managed to get by with them but as you say this size isn't listed so try McAlpine or Hepworth.
As a worst case scenario you could always go back to the next joint in the soil pipe and fit a caulking bush

 

[ChrisR]

Fernco also do rubbery sleeve type connectors for just about everything.