Multiple Choice
Concerning atmospheric vacuum breakers (ABV) , which of the following statements is incorrect?
A) The AVB is always located downstream from all shut-off valves
B) The AVB air inlet valve is open when water flows in the normal direction
C) AVB valves do not operate properly when under continuous pressure for more than 12 hours in a 24-hour period
D) None of the above
Correct Answer:
Verified
Correct Answer:
Verified
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