When inspecting water-flow control valves, an inspector should check that the:
A. alarm line shutoff valve is completely closed.
B. valves to the pressure gauges are closed.
C. main drain valve, auxiliary drains, and inspector's test valves are closed.
D. static pressure above the clapper valve is equal to or less than the static pressure below the clapper.
Answer: C. main drain valve, auxiliary drains, and inspector's test valves are closed.
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