T Into CI Soil Pipe

[rgoodwin]

I want to fit a new toilet in a downstairs room. Conveniently the soil pipe from an existing toilet runs close by beneath the floor.

However, the existing soil pipe is cast iron.

Is it possible to cut a section out of the Cast Iron pipe, push Multiqwik extensions into each of the open ends, then use slip couplings to connect a standard plastic Equal Branch? Or should Multiqwik extensions only be used in the downstream direction?

If so, is there any other solution?

Cheers.

Richard.

[noseall]

replace the soil stack with a plastic one.

[rgoodwin]

Yes, probably the correct solution, it's just that I can't easily get to either end of the CI pipe - it runs under footings at two sides of the building, but happens to pass through a cellar immediately beneath where I want to site the new loo.

Tapping into the existin cast iron pipe would therefore be much easier.

I don't support there's such thing as a cast iron equal branch with slip couplings?