What device prevents backflow in a water distribution system?

What device prevents backflow in a water distribution system?

• A. Water meter
• B. Backflow preventer
• C. Pressure regulator
• D. Booster pump

Answer: (B)

A backflow preventer is a crucial device in a water distribution system designed to prevent the reverse flow of water. This reverse flow can occur due to changes in pressure within the system, potentially leading to contamination of the potable water supply. The backflow preventer functions by creating a physical barrier that stops water from flowing back into the main supply line, ensuring that only water from the intended source is delivered to consumers. It typically includes valves that automatically shut when backflow is detected, providing a reliable safeguard against contamination. In contrast, a water meter measures the volume of water passing through a system and does not prevent backflow. A pressure regulator maintains a consistent water pressure but does not serve to block reverse flow. Similarly, a booster pump is used to increase water pressure but does not address the issue of backflow. Hence, the function of a backflow preventer is specifically designed to address and mitigate the risks of backflow in a water distribution system, making it the correct answer.

A backflow preventer is a crucial device in a water distribution system designed to prevent the reverse flow of water. This reverse flow can occur due to changes in pressure within the system, potentially leading to contamination of the potable water supply. The backflow preventer functions by creating a physical barrier that stops water from flowing back into the main supply line, ensuring that only water from the intended source is delivered to consumers. It typically includes valves that automatically shut when backflow is detected, providing a reliable safeguard against contamination.

In contrast, a water meter measures the volume of water passing through a system and does not prevent backflow. A pressure regulator maintains a consistent water pressure but does not serve to block reverse flow. Similarly, a booster pump is used to increase water pressure but does not address the issue of backflow. Hence, the function of a backflow preventer is specifically designed to address and mitigate the risks of backflow in a water distribution system, making it the correct answer.