Non-Standard pipe connection - please help!

[tomcox]

Hi, I have an opening on the 'manifold' (I think that's what its called) on my soil pipe. It appears to be a non-standard size - about 51mm internally.

I'm trying to connect a 40mm floplast solvent weld pipe, and can't find a boss adaptor that even nearly fits.

I can't cut a new hole above, because it would be too high. I can't go into the floor cavity without lifting two layers of marine ply that I've just put down - plus I think the manifold continues under there that I don't think a tee would fit on to.

Does anyone have a solution to this? Or even a bodge?

 

[fowlerboi]

What the Damn is that fitting. Is that even air tight? it looks like the branch is just loose in the top of the boss pipe.

Check for a name or product number on the boss then try and find the right adaptor or shop around for a variety of sizes until you get lucky

 

[tomcox]

What the Damn is that fitting. Is that even air tight? it looks like the branch is just loose in the top of the boss pipe.

Check for a name or product number on the boss then try and find the right adaptor or shop around for a variety of sizes until you get lucky

Yeah, I dunno - it keeps the toilet waste separate from the bath/basin waste internally. It's all sealed and works fine tho yeah

It's just the opening - I've really searched online, but every boss adaptor I can find is around 67-68mm. Is there some other adaptor I would look for? Or a place that sells non-standard/to order parts?

Otherwise I was thinking of bodging it in by trimming a boss adaptor down with a stanley, and then using silicone.

Then maybe covering the whole thing using one of these - Amazon product
Thoughts?

 

[ShaunCorbs]

2” coupling or 2” reducer will fit

Or have you tried a 11/2 coupling ?

 

[Knappers]

Marley might be worth a go?

 

[tomcox]

2” coupling or 2” reducer will fit

Or have you tried a 11/2 coupling ?

Thanks

Do you mean like this sort of thing?

Could I solvent weld on to the manifold opening?

 

[tomcox]

Marley might be worth a go?

Is that drain pipe fittings?

 

[fowlerboi]

1 1/2" coupling might be a good shout.

2 inch should be bigger externally then 51mm

 

[ShaunCorbs]

Thanks

Do you mean like this sort of thing?

Could I solvent weld on to the manifold opening?

Yes or the external part

 

[snowhead]

This will probably work, it's 50mm outside.

Solvent Weld Reducer

www.toolstation.com