AZ ROC C-16 Fire Protection Systems (Commercial) Practice Questions - Arizona ROC C-16 CR-16 Fire Protection Systems (Commercial) Examination Exam

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When field testing a Reduced Pressure Zone (RPZ) backflow preventer, the differential pressure relief valve must begin to open and discharge water when the differential pressure across Check Valve 1 drops to what minimum threshold?

1.0 psi 2.0 psi 3.5 psi 5.0 psi

Correct Answer:

2.0 psi

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