NM CID MS-6 Practice Questions - New Mexico CID MS-6 Lawn Sprinklers Examination Exam

An atmospheric vacuum breaker (AVB) is acceptable on an irrigation zone only when it is:

Under continuous pressure with shutoff valves downstream At least 6 in. above the highest downstream outlet, not under continuous pressure, and with no valves downstream Buried in a valve box under the lowest head Used in place of an RP on a chemical-injection mainline

Correct Answer:

At least 6 in. above the highest downstream outlet, not under continuous pressure, and with no valves downstream

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