"Dave Plowman (News)" wrote in message
...
In article ,
TonyB wrote:
I'm installing a new basin/mixer in my downstairs cloakroom (where the
old basin had two separate taps). Now as the cold is fed by the rising
main, and the hot by the tank in the loft I have a pressure imbalance to
cope with. I believe this requires a pressure reducer valve on the cold
feed.

I did a similar thing in the kitchen with a posh lever arm mixer. Only to
discover it was really intended for high pressure only. As most of these
things are these days. So have you actually tried yours yet? I ended up
adding a pump to the hot rather than reducing the cold flow.


I hope not, as the hot flows pretty well, and drives mixer taps in the
kitchen with no problem.


I also require each feed to have a single check valve to prevent
cross flow between hot water and rising main.

Are you sure you need this?

According to the tap manufacturer, apparently I do ? I guess it depends on
the mixer design.

Then I also wanted to add
a service valve to each feed so I can turn off the water to the basin.

Where flow is a problem as likely with the hot, best to use full bore
valves.

OK. The tank is 2 floors up in the loft, so flow rate isn't bad.....

Thanks
Tony