What is a likely indication that a backflow preventer is failing?

What is a likely indication that a backflow preventer is failing?

• A. A stable, normal distribution.
• B. A visible leak in the backflow preventer.
• C. Pressure is steadily increasing.
• D. A visible leak, pressure loss, or backflow signs in the distribution system.

Answer: (D)

Backflow preventers are meant to stop water from flowing backward into the potable supply, so signs of failure show up in ways that affect the distribution system. If the device itself is leaking, that’s a direct indicator that something isn’t sealing properly. More importantly, you may also notice downstream pressure loss or other signs that backflow could be occurring, such as unexpected flow changes or contaminants beginning to appear in the lines. These indicators together—a visible leak, pressure loss, or actual backflow signs—point to the backflow preventer not functioning correctly. A stable, normal distribution doesn’t signal a problem, and a pressure rise isn’t typically linked to backflow device failure.

Backflow preventers are meant to stop water from flowing backward into the potable supply, so signs of failure show up in ways that affect the distribution system. If the device itself is leaking, that’s a direct indicator that something isn’t sealing properly. More importantly, you may also notice downstream pressure loss or other signs that backflow could be occurring, such as unexpected flow changes or contaminants beginning to appear in the lines. These indicators together—a visible leak, pressure loss, or actual backflow signs—point to the backflow preventer not functioning correctly. A stable, normal distribution doesn’t signal a problem, and a pressure rise isn’t typically linked to backflow device failure.