Island sink waste

15 Mar 2013
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United Kingdom
I'm currently thinking of diy fitting a kitchen island with sink and dishwasher.

The only thing that concerns me or that I can't understand is
How to fit the 2 x 40mm waste pipes into the drain as they will be underground. The drain will likely be clay and I'm not sure of the proper connections?
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Can't help with the drain fittings but I think you will also have to consider venting in the sink waste. Someone may be able to advise more on that.
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Need to know what type of clayware you're faced with, then can advise on a suitable connection to the plastic fitting already shown, or if using new clayware drain, (Supersleve) then Hepworth will already make a suitable fitting to go on the end to allow connection of waste pipes.

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