Less of an issue for area shutoff valves (e.g. under-sink) , since most of the time they are used before doing maintenance and there is little flow at the time.

Less of an issue for area shutoff valves (e.g. under-sink) , since most of the time they are used before doing maintenance and there is little flow at the time. We did have a plumber (!!) damage our pressure regulator by turning the whole-house shutoff valve (inches away from the regulator) too quickly; that was a bit annoying.