A Pressure Vacuum Breaker (PVB) assembly must be installed at what minimum height above the highest downstream outlet or usage point?

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Multiple choice — select the best answer

A6 inches
B12 inches
C18 inches
D24 inches

✓ Correct answer: A. 6 inches A PVB must be installed at least 6 inches above the highest downstream outlet or point of use to prevent the downstream system from submerging the air inlet valve, which could allow back-siphonage contamination.

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Topic: Assembly Types

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A Pressure Vacuum Breaker (PVB) assembly must be installed at what minimum height above the highest downstream outlet or usage point?

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