On Mon, 9 Jun 2008 09:24:27 +0100, Mike wrote:

Be aware that the connectors can and do come off. If this happens
unobserved the if you are on a water meter! Oh dear, very dear!

That is what I am afraid of. However both ends would be very visible and
any blow off would soon be seen.

A hose will use an awful lot of water overnight...

I think you can get check valves that stop the flow if the pressure drop
across them rises above a given amount. The pressure drop being
proportional to the flow rate.

--
Cheers
Dave.