New SVP connection on existing cast iron system

[JamesFarrell]

Hi

 

I'm hoping to convert an existing shower room into a cloakroom WC, to a flat within an old 1800's block.

 

There is an existing cast iron SVP, within a riser, which has a bolted plate (access panel / rodding point?), with a 40mm copper connection on the plate which served the (now removed) shower tray, as per photos.

 

Looking for any advice on easiest method to convert to a 100mm WC connection please. Would it be possible  to bolt on a branch connection to the existing plate if this is is a fitting which may be stocked somewhere?

 

It's Landlord services, so it's unlikely I would be permitted to cut into the stack to piece in a 110mm uPVC branch.

 

Many thanks

[Mr Punter]

I have never seen one of these before, but an old school plumber probably has.  If you can unbolt the plate / flange thing you may be able to modify it to connect to the WC.  You may want to look at using 82mm pipe.