Quote:
Originally Posted by onewhippedpuppy
There are flow based water valves that detect when your water flow exceeds normal use, such as a large leak, and shuts off your water. Something like that would probably help here considering the importance of the water system.
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I have been looking into those for my house, as protection from a water leak.
The ones I've seen are allegedly "smart" and learn your "normal" usage pattern and either alert you via WiFi or automatically shut off if they detect "abnormal" usage, and to protect against small leaks they need remote leak detectors. Anyway, they are plastic and electronics. Not sure if they are "fail-open" or "fail-closed" devices.
You know, you could also have a check valve that closes if temperature sensors in the house detect, lets say, 1000F. Presumably should be "fail-closed" since the electronics will be destroyed. Not sure how they'd handle a power outage, but a manual bypass solves a lot of things.
In general, it would be nice if this device is rugged, reliable, inexpensive, easy to install, doesn't require power, functions in fire up to 2000F, and lasts 50 years. So I'd be biased against anything electronic. In fact, I'd be biased against anything not stainless steel because the melting point of copper, brass, etc is <2000F.
And you'd have to force everyone to install one reasonably promptly (not wait until they pull a plumbing permit, could be 30 years) since there is zero benefit to the individual homeowner.