Adding dishwasher, currently no plumbing provision

[Smiffy7]

Hi,

I am about to install a new dishwasher in my kitchen where currently there is only space for a washing machine. Firstly I need to make the physical space (which I'll be making by relocating a draw base unit) and it will be located under the opposite side of the sink to the existing WM, leaving a single base unit cupboard in between the two appliances.

The other task is to plumb it in and I think I have purchase the right plumbing bits to adapt the existing plumbing, but I just wanted to run it by to make sure I'm on the right track.

Water supply - I have assumed I can solve with an easy solution by getting one of these http://www.screwfix.com/p/washing-m...arch-_-SearchRec-_-Area3&_requestid=56146#_=p

Drainage - My current, single appliance arrangment has something like this fitted http://www.screwfix.com/p/mcalpine-appliance-trap-40mm-white/81714. I plan to swap that for this http://www.screwfix.com/p/mcalpine-appliance-trap-40mm-white/95241. Seems a straight forward enough swap, however, one of the two discharge nozzles has a kind of baffle where it enters the trap. I have taken a couple of pics to try and show what I mean:
https://www.dropbox.com/s/1bx7vzpe9a8ag48/20141206_101356.jpg?dl=0
https://www.dropbox.com/s/9gkj6aotilfpdfg/20141206_101405.jpg?dl=0
I was just wondering what the significance of the 'baffle' was, and whether it matters which appliance waste connects to it?

Would welcome your general comments / advice on the install.

Thanks

 

[ALCPlumbing]

I would get something like this for the water supply.
http://m.ebay.co.uk/itm/like/111372...3=1&ff11=ICEP3.0.0-L&ff12=67&ff13=80&ff14=108

This way you have a separate valve. Will need to be cut into the cold water mains pipe.

The trap with the spigot will be fine for the waste connection.

 

[flameport]

I was just wondering what the significance of the 'baffle' was, and whether it matters which appliance waste connects to it?

It's there to prevent water from one connection going into the other one.
Doesn't matter which appliance is connected where.

As for the Y connector - do not buy. It will split, the nut will shear off, the thread will fail, it will not seal against the metal fitting properly.
When it fails, vast amounts of water will pour all over your kitchen, causing substantial and expensive damage. This will happen 5 minutes after you left the house to ensure maximum destruction.

 

[Hugh Jaleak]

+1 on both previous posts. I tried one of those Y pieces once, simply because the customer had already bought it and was insistent I used it, despite my prophecies of doom and disaster.

I couldn't even get the bloody thing to seal whilst I was testing it, after the customer had got soaked (as he didn't believe I couldn't get it to seal....), only then did he see the error of his ways and allow me to fit the Tee valve I had bought for the job!

 

[Smiffy7]

Thank you all very much for the advice! I shall head the advice about the plastic Y piece and I'll get a proper valve T.

Are there any handy guides for fitting such an item? I've dabbled in plumbing before and my brother will have all the tools I need. I would ask him for the advice but he is at sea right now so contact is difficult

 

[Hugh Jaleak]

One such video, others are available.

https://www.youtube.com/watch?v=NpIh1u_Y3h0