all my nonsense snipped !

"Tim Mitchell" wrote in message
...
In article , Graeme
But there is more flow rate through the 22mm cylinder feed pipe
than through the shower, even at the lower pressure of the cylinder.

Then this answers my question. Thanks.
So what is the flow rate through a 22mm pipe with a standard cold storage
tank?

Still sort of OT, where would you tap my cylinder to put in a flange? Top
(flat) or side?