On Wednesday, 9 March 2016 21:29:00 UTC, newshound wrote:

top floor. Don't economise, get a Stuart Turner. I suspect that a single
3 bar pump might be sufficient for all three showers. Certainly I
normally throttle the flow on my 2 bar one. Might be worth plumbing the
shower feeds in 22 mm?

He has 3 floors, he doesn't need a pump


NT