NM CID MM-1 Practice Questions - New Mexico CID MM-1 Plumbing Examination Exam

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Compared with an atmospheric vacuum breaker, a pressure vacuum breaker (PVB) may be installed where the assembly is under continuous pressure, provided that:

It is used for high-hazard backpressure on a boiler feed A shutoff valve is installed immediately downstream of the air inlet It is buried in a meter pit without drainage It is used for backsiphonage only and is installed above the highest downstream outlet

Correct Answer:

It is used for backsiphonage only and is installed above the highest downstream outlet

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