Backflow Prevention Practice Exam

Question: 1 / 400

If the shut-off valve of a backflow assembly is closed, what might be the consequence?

Increased back pressure

Lack of flow

When the shut-off valve of a backflow assembly is closed, it prevents the flow of water through the system. This can lead to increased back pressure because the water trying to flow back into the system has nowhere to go. In a backflow assembly, back pressure can occur due to various factors, such as temperature changes or elevation differences, and closing the shut-off valve effectively traps the water behind it, raising the pressure in that section of the system.

Conversely, lack of flow, leakage, and contamination of the water supply might also be considerations in a system where flow is disrupted, but the most immediate consequence of closing the shut-off valve is the resultant increase in back pressure since the water's movement is restricted. Understanding this dynamic is essential for maintaining the integrity of water supply systems and ensuring that backflow prevention measures are functioning correctly.

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Leakage

Contamination of water supply

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