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HeyBub

wrote:

imagine a power failure in a emergency, when you really needed water
like a fire.

a ball valve 1/4 turn on main way better choice.

try to automate things too much and the equiptement may cause worse
troubles of its own

In the book, "SystemAntics," one finds the rule:

"Fail-safe systems fail by failing to fail safe."

Consider automobile brakes. Originally, you stepped on a pedal which pulled
a wire that expanded the brake shoes.

Then came hydraulic brakes. Then power-assisted brakes. Then dual-brakes.
Now anti-lock. The number of parts in the brake system has grown by two
orders of magnitude, each part with its own potential of failure.