RobertL coughed up some electrons that declared:


http://www.floodcheck.co.uk/

This website offers an automatic stop cock that turns off the water if
the flow rate is above a chosen threshold or the water has flowed for
too long (user defined).

These seems like a good idea. Has anyone fitted one of these? Did it
work OK?

Robert
(no connection to floodcheck)

I've got one for testing (just the valve unit). They have the advantage of
being a fancy washing machine valve in MOMO form (they are operated by a
pulse - one polarity to turn on, reverse to turn off) though the website
does claim reasonable flow rates.

I'm considering using them to control my rads as normal 1/2" MOMO valves are
hard to get in 12V or 24V and are expensive.