Dishwasher - waste plumbing

Chojin · 3 May 2015 at 12:40

I've just ordered a slimline dishwasher and am trying to figure out the plumbing situation for the waste pipe. I was wondering if anyone can advise what I need.

At the moment my washing machine is connected to the sink trap like this.

I thought I could get a splitter to have two waste connections such as the McAlpine V33WM twin connector, but I've read that it needs to be installed vertically so not sure it would be a direct fit.

There is also McAlpine WM11 with twin nozzles that looks like it could replace the whole sink trap and allow waste connections for the washing machine and dishwasher at the same time.

chaparral · 3 May 2015 at 13:11

maybe you could just replace that single trap take off part with a WM11 twin trap take off part..
http://www.mcalpineplumbing.com/1-189-sink-trap-with-twin-135-deg-nozzles.html?id=1014

£15 · 3 May 2015 at 13:15

Twin trap will work, but I would suggest you look into a dedicated waste for it. Is there space?

Chojin · 3 May 2015 at 14:03

chaparral said:
maybe you could just replace that single trap take off part with a WM11 twin trap take off part..
http://www.mcalpineplumbing.com/1-189-sink-trap-with-twin-135-deg-nozzles.html?id=1014

That could work yeah, you mean just replace the top bit that connects to the sink?

Chojin · 3 May 2015 at 14:05

BadMojo said:
Twin trap will work, but I would suggest you look into a dedicated waste for it. Is there space?

There might be, to be honest this is really just a stopgap solution until I can gut the whole kitchen out. I don't mind if I can only run either the washing machine or dishwasher at once, so maybe the twin nozzle would be the easiest for the moment.

£15 · 3 May 2015 at 15:11

Indeed.

I fitted our kitchen last year and gave the dishwasher its own waste, but plumbed the washing machine into the sink trap as it was right next to it. However, I'm wishing I'd given it its own waste (it's on an external wall, right next to a drain). I still might...

chaparral · 3 May 2015 at 15:25

Chojin said:
you mean just replace the top bit that connects to the sink?

Yes...

chaparral · 3 May 2015 at 15:36

A better way is to use these two parts (That if they will joint together)

That if the twin trap can be fitted where blanked off elbow is..
I.E remove the left side blanked off elbow and put the twin waste trap there..

Chojin · 3 May 2015 at 23:20

chaparral said:
A better way is to use these two parts (That if they will joint together)

That if the twin trap can be fitted where blanked off elbow is..
I.E remove the left side blanked off elbow and put the twin waste trap there..

Cool I've just order those parts, looking forward to getting it all set up! Thanks guys.