"John Aston" wrote in message
...
"Neil Jones" wrote in message
...

"John Aston" wrote in message
.. .

My own test was very empirical - I switched off all water supplied to
the house and turned on the garden hose. The jet of water did not
"feel"
"feel" very substantial, particularly if is to be shared among
appliances.

My outdoor tap delivers water at less than half the rate that I can get
at another tap internally. I have no idea why this is since I didn;t fit
the tap and I really don't need lots of water delivered quickly in the
garden.

However, you might find that your outdoor tap is similarly slow compared
to your internal, and you might be in better shape than you think.

Neil

Well, the garden tap does have its own stopcock and a double check valve
in
line, so you could be right.

I'll do a test to see how long it takes to fill a large bucket from the
main
supply stopcock where water comes in to the house...

Then if it has a conventional stop cock replace it with a 1/4 turn full bore
one (get a good quality one). And then see if the flow increase. I have
found a 25% improvement in flow in some cases when replacing old stop cocks.
In borderline cases, like yours it is essential to fit these. Also any cold
feed should be large bore and bends used.