What is the minimal acceptable pressure differential across the check - ProProfs Discuss
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What is the minimal acceptable pressure differential across the check valves when testing a Double Check Detector Fire Protection Backflow Preventer Assembly?



A. 0.5 PSI
B. 1.0 PSI
C. 2.0 PSI
D. 3.0 PSI

This question is part of Backflow Quiz 5
Asked by Wyatt Williams, Last updated: Sep 23, 2018

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1 Answer

Wyatt Williams

Wyatt Williams

Answered on Jan 30, 2018

0.5 psi
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