IMM wrote:

Must be pretty low pressure. Our 'mains' pressure is about 1.3 bar, and
I've put in a flowmax thermal store. The water delivery from that is so
good that we've done away with the shower pump.


You can't use a pump from the mains.

A. We don't need to, because the flow rate is quite adequate.

B. If I want to, I could use a pump on it. Our 'mains' is a reservoir,
not a water company main (hence 'mains', not mains). So I can do
whatever the hell I want with it. I even have a garden hose without a
non-return valve on it! Ha!

--
Grunff