Backflow Prevention Practice Exam

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Continuous flow from the air-inlet may indicate what issue?

  1. Clogged backflow preventer

  2. Leaks at the shut-off valves

  3. Failure of the air-inlet valve

  4. Disc corrosion

The correct answer is: Failure of the air-inlet valve

Continuous flow from the air-inlet indicates a failure of the air-inlet valve. The air-inlet valve plays a crucial role in maintaining proper system pressure and preventing backflow. When this valve fails, it can no longer properly regulate the flow of air into the system, leading to a continuous flow. This situation can result in the introduction of contaminants into the potable water supply, which is why identifying a failure at this valve is critical for ensuring the integrity of the backflow prevention assembly. The implications of such a failure are significant, as it could compromise the effectiveness of the entire backflow prevention system. Monitoring the air-inlet valve for proper function is vital in safeguarding water quality and complying with health regulations.

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