Pvc rain water downpipe to cast iron

[messimagician]

I want to join a pvc downpipe 68mm with cast iron pipe but can't find anything online. I have seen a coupler which as stainless steel fasteners but they don't look appealing on show

There are few decent ones for soil stacks that sit in the cast iron pipe but I've not seen anything for downpipes

Could someone please link me to what I should be looking for? I take it that all cast iron downpipes are the same size?

The pipes go through a concrete slab in the garage which I don't want to dig

Thanks

 

[Rckape]

I've not seen anything like what you're describing, but that doesn't mean they don't exist.

Cast iron will be a different size depending on the manufacturer and style.

You could try a cast or cast effect couple with the spigot into the cast at ground/low level and sealed with a black silicone or joint compound. Not ideal but would do the trick.

The only other option that springs to mind is to use a fernco coupler, which is the one with stainless fastners you mentioned.