On Thu, 3 Nov 2011 18:47:50 +0000, chris French wrote:

for Floplast it gives a max working pressure of 12 bar at 20C
at 85C, 4 bar

Our mains pressure is about 5 bar... OK you won't have mains pressure
in the CH but I still think it's begining to sail a bit close to the
wind even with DHW.

--
Cheers
Dave.