On Thu, 11 Mar 2004 09:42:10 +0000, Christian McArdle wrote:

I take it you've never tried the likes of an Aqualisa shower fed 22mm
from a gravity fed system with a reasonable head?

The problem is that the gravity system can't provide the pressure. OK, if
well designed, they can provide good flow rates (i.e. for a Victorian style
drencher), put you'll never get a nice pounding from the pulse function
without a bit of push. That needs at least 1 bar, preferably more. That's
over 10m of head. Many people can't afford to buy an entire block of flats
so that a tank can go on the roof.


If you want serious flow and pressure buy a flat (on a losih storey) in a
large 1930's block with _central_ heating.

What is adeqaute flow/pressure for a shower is a matter of personal taste
and expectations (fulfilled/unfulfilled).


--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html