Water Supply & DistributionQuestion 56 of 360
A dental office has vacuum and treatment equipment connected to the potable supply, presenting a health hazard with possible backpressure. Which premise-isolation assembly is appropriate?
a.Atmospheric vacuum breaker
b.Hose bibb vacuum breaker
c.Double check valve
d.Reduced pressure principle assembly (RP)
Explanation
A health hazard with possible backpressure requires a reduced pressure principle assembly (RP) for premise isolation. An AVB and hose bibb vacuum breaker protect only against back-siphonage, and a double check is limited to low hazards, so none of those suffice for a health hazard with backpressure.
Law Reference: 2022 California Plumbing Code (CPC) §603.0Practice all 360 questions free — no signup required.
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