Fractured CI vent pipe - coupling?

[Jerry Built]

I've got a little job where a cast iron vent pipe clipped to an external wall in a driveway has been fractured at some time. The break is about 1 1/2" up from the concrete drive which it passes through. The break is neat and looks as if two pipes have simply been butted together, end to end. A cement collar had been made up, which has now broken up, to conceal the break.

Is there a repair coupling available to fix this? I'd rather not haul the whole vent pipe down....

Any help much appreciated!

[BigWallop]

If you have enough on the tail, then you could fit a collar of copper or ? around it, than wrap before covering with paint.

[Archie]

"BigWallop" | | "Jerry Built" | > I've got a little job where a cast iron vent pipe clipped to an | > external wall in a driveway has been fractured at some time. The | > break is about 1 1/2" up from the concrete drive which it passes | > through. The break is neat and looks as if two pipes have simply | > been butted together, end to end. A cement collar had been made | > up, which has now broken up, to conceal the break. | >

| > Is there a repair coupling available to fix this? I'd rather not | > haul the whole vent pipe down.... | >

| > Any help much appreciated! | | If you have enough on the tail, then you could fit a collar of copper or ? | around it, than wrap before covering with paint.

I'm sorry I don't have direct experience of your issue.

I just wanted to mention that, if you choose a different metal then Stainless is preferred, because of bi-metal corrosion - Al or Cu with iron will rust the iron quickly - a coupling/extension/cover of some sort would be ideal - if painted it should resist UV sunlight too (if relevant of course).

[BigWallop]

Very good point sir, never thought of things like that.

[Archie]

I meant to say:

A **PLASTIC** coupling/extension/cover will be ideal!

Sorry.

"Archie" | I just wanted to mention that, if you choose a different metal | then Stainless is preferred, because of bi-metal corrosion - Al | or Cu with iron will rust the iron quickly - a | coupling/extension/cover of some sort would be ideal - if painted | it should resist UV sunlight too (if relevant of course). |

[Peter Taylor]

Yes - you need a 112mm dia Timesaver Coupling, for example Saint-Gobain Pipelines GT01. This is a cast iron collar in two sections which saddle round the old pipe and bolt together. Look at:

from a Builders Merchant I expect.

Peter

[John Stumbles]

There are thick rubber sleeves with jubilee clips for joining soil/vent pipe - like

same size each end. A good builder's or plumber's merchants or BES should have them. I don't know how you'd get one onto your pipe from what you describe though. How about wrapping the cracked joint with a few turns of wide thinnish rubber from a car inner tube and securing it with jubilee clips (perhaps of the type where you cut a length of perforated band & fit a worm-drive mechanism to tighten it) or heavy duty cable ties?

-- John Stumbles

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-+ Which Tyler: leader of the pedants' revolt.