Cold water supply to kitchen tap, dishwasher and washing machine

[Jupiter01]

Hi All,

I currently have a cold water supply pipe (15mm plastic) coming out of the kitchen unit. This needs to service the kitchen tap, dishwasher and washing machine. I am wondering if there is a suitable fitting to feed all of these or how I should arrange the pipework to ensure maximum flow, etc.

Thanks in advance

 

[Burnerman]

Par for the course I'd say.....washing machine / dishwasher demands aren't great or continuous so any reduction to the kitchen tap would be minimal.
John

 

[Jupiter01]

What's normal in these circumstances? I should have stated that this is a DIY project but I have done some plumbing in the past.

 

[Burnerman]

My own supply is blue MDPE which reduces to 15mm within the building......static pressure 3 bar.
No problems with any appliance or supply but of course you can tell if more than one tap is open.
John

 

[Newboy]

Split the supply using 2 no. T's like these http://www.screwfix.com/p/washing-machine-valve-tee-15mm-x-15mm-x/60723
and one of these to isolate your cold water feed to the tap http://www.screwfix.com/p/full-bore-isolating-valve-15mm/46860

If you're using plastic pipework then ensure that you use the correct inserts (to match the pipe) in the fittings.

 

[Jupiter01]

thanks @newboy. That's very helpful. Since, I have hep20 coming out of the ground, I'm inclined to continue with this in which case I will get the HEP equivalent fittings of what you have suggested.

 

[Jupiter01]

Been doing some more digging on this and it transpires that there is no Washing machine tee valve in the Hep20 system. The closest appears to be this:
http://www.screwfix.com/p/hep2o-hx18-15ws-straight-service-valve-15mm/9258f

This will require a Tee off my single pipe coming out of the ground and then a short stub of pipe connected into one of these. the same would then be repeated for the dishwasher and finally, I would have one of these for the tap pipes to connect into:

http://www.screwfix.com/p/hep2o-hx2...tracking url&gclid=CJW8vriagdECFSIG0wodQu8G6A

Is this sensible?

 

[Newboy]

The Hep service valve won't connect to the w/m or d/w

What are you planning to connect to the brass/Hep adaptor?

 

[Jupiter01]

ohh, what do I use in the hep range for the dishwasher and washing machine?

the geo brass fitting would be for the flexible tap pipe to connect onto

 

[Newboy]

These for w/m & d/w

http://www.screwfix.com/p/hep2o-hx38-15ws-hot-cold-appliance-valve-15mm/6737f
http://www.screwfix.com/p/hep2o-hx38-15ws-hot-cold-appliance-valve-15mm/6737f

Don't forget an isolator for the H&C taps before the brass/Hep adaptor

 

[Jupiter01]

thanks again. You posted the same link twice - in case you we're intending something else.

presumably I still need the tee and short stub of pipe to precede these appliance valves?

I've also noted your point on the isolator for the taps. A thought - could this same fitting not be used for the tap too?

 

[Newboy]

thanks again. You posted the same link twice - in case you we're intending something else.

Apologies, it should have been a link to these - http://www.screwfix.com/p/hep2o-hd10-15w-equal-tees-15-x-15-x-15mm-10-pack/4500f

presumably I still need the tee and short stub of pipe to precede these appliance valves?

yes (and don't forget the inserts )

I've also noted your point on the isolator for the taps. A thought - could this same fitting not be used for the tap too?

No - the tap tails won't connect to the appliance valve

 

[Jupiter01]

you've been very helpful. Many thanks. [off to screwfix]

 

[Jupiter01]

Guys, given that I will be using the Hep20 fittings and I already have the Hep20 pipes coming out of the ground (I need to connect to these), I assume that Hep20 pipe is the way to go with the rest of this as opposed to copper pipe in conjunction with Hep20 fittings?

 

[Madrab]

It all depends really. Nowt wrong with Hep but I do like the look of copper and it's resistance to getting banged/jammed/pulled or chewed.