NM CID GF-3 Practice Questions - New Mexico CID GF-3 Canals, Reservoirs Or Irrigation Systems Contractor Examination Exam

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A pressure vacuum breaker (PVB) or reduced-pressure backflow assembly is installed on an irrigation system primarily to:

Increase precipitation rate Prevent irrigation water from siphoning or pumping back into the potable supply Replace the zone valves Measure GPM for the precipitation-rate formula

Correct Answer:

Prevent irrigation water from siphoning or pumping back into the potable supply

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