Kitchen Island waste connection to drain...

[tony sayer]

Her indoors now wants the have this Island thing in the new kitchen area which I'm not arguing with;!..

However on the plans, well sort of, there is the idea of running a 100 mm soil drain to an existing adjacent one, the idea this there is to be a new "gully" underneath the Island unit. Now obviously there will be or must be an "S" bend type of gubbins in that to prevent foule stinks coming up from the drains.

This unit will I expect finish at screed level but does anyone know of an adapter that can take say a 40/43 mm dia white waste pipe into the

100 mm drain gully that has a seal thereon so that no water will leak and or smells come up from below. I thought there would be something like an adapter plate that could screw down on top of the gully with screws at the corners and in that a fixed hole thats say got a rubber or plastic "O" ring type seal for the pipe from the sink and dishwasher unit to connect into.

Anyone any ideas please?...

cheers...

[polygonum]

Island units are madness. But if intent...

Each appliance could have its own HepVO trap.

[Phil L]

You're thinking along the wrong lines - you don't want a gulley at all

just run a 40/43mm pipe from the existing stinkpipe, under the concrete and bring it up in the island - it connects onto the existing pipe with a boss.

At the island end, put in a normal trap and run into this what you like.

[Dave Liquorice]

110mm?

But why do you need to run 110mm soil pipe to the island? Just use normal 40mm waste pipe with correct fall and make sure you have access for rodding.

If you still want to run 110mm soil pipe just put a swept bend on it to bring it up above to floor level and fit a concentric waste reducer. Traps etc being part of the normal plumbing. Be aware that burying 110mm pipe will require quite a channel to be cut. What is your floor construction?