Draining kitchen waste into soil stack

[Ratter]

I would like to run the waste water from a kitchen sink and a dishwasher through an internal wall into a 4" plastic soil stack in an adjacent room (downstairs wc).

Is there any reason why this would not be a good idea and what would be the easiest way to connect to the existing stack.

At the moment the water goes out through the outside wall to a soak away which regularly blocks (I believe) because there is little or no fall on the pipe as it goes through the wall.

 

[hi-spec plumbing heating]

http://www.screwfix.com/app/sfd/cat...HZPCFEY?productId=81605&imageNo=null&ts=28799

 

[Ratter]

Thanks for that - looks easy and cheap - just wonder why the previous owner didn't do it.

 

[Richard C]

Make sure you observe Building Regs. regarding the minimum distance of 450mm from the drain invert (the bottom of the bend) & don't connection opposite another flow into the stack (particularly if it’s the downstairs loo!) or cross flow will occur.