Ghazali wrote:

I am thinking of running both the basin mixer and bath shower/mixer
cold taps off of the mains, whilst still having the hot from the hot
cylinder. (Hot will not be pumped).

1. A kithchen sink mixer also usually runs cold off the mains and hot
from the storage cylinder, yet I never hear pple complaining about
'pressure imbalance' for washing up purposes. Why is it any different
for a shower.

A kitchen mixer doesn't generally combine the two flows within
the body of the tap, it is only after leaving the nozzle that
they mix. They do not, therefore, get any chance to interact,
whatever their relative pressures.

4. If the water is coming through a shower mixer (i.e. pre-mixed), why
would a pressure imbalance between hot and cold have any noticeable
effect?

The mixer will be trying to achieve the set temperature by
opening and closing apertures for the two flows, If they are at
significantly different pressures it will be difficult to limit
the higher pressure flow to admit enough of the low pressure one.

Chris
--
Chris J Dixon Nottingham UK


Have dancing shoes, will ceilidh.