In article ,
wrote:
I doubt you would notice any difference at the shower head unless you
increase the pressure by: raising the header tank, converting to mains
pressure or adding a pump. However, it *might* be beneficial to provide
the showers with 15mm dedicated feeds from a 22mm feed from the tank.

I have an Aqualisa shower designed for 22mm feeds. From a low pressure
header tank system. Brilliant shower - high flow low pressure. Same with
the feeds to the bath. No point in 22mm to a basin etc though. As the taps
themselves will throttle the flow.

--
*When a man opens a car door for his wife, it's either a new car or a new

Dave Plowman London SW
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