What does a double check valve backflow assembly provide effective protection from?

What does a double check valve backflow assembly provide effective protection from?

• A. Water
• B. Air
• C. Pollution
• D. Sediment

Answer: (C)

Backflow prevention is about stopping contaminants from being drawn back into the drinking water when a cross-connection exists. A double check valve backflow assembly provides effective protection from pollution by preventing any reverse flow of non-potable substances into the water supply. It uses two independently functioning check valves that close if flow reverses, so pollutants cannot travel back into the distribution system. This device is designed to stop contaminants that could degrade water quality, rather than merely addressing issues like water itself, air, or sediment.

Backflow prevention is about stopping contaminants from being drawn back into the drinking water when a cross-connection exists. A double check valve backflow assembly provides effective protection from pollution by preventing any reverse flow of non-potable substances into the water supply. It uses two independently functioning check valves that close if flow reverses, so pollutants cannot travel back into the distribution system. This device is designed to stop contaminants that could degrade water quality, rather than merely addressing issues like water itself, air, or sediment.