Question By: A backflow prevention device is crucial for maintaining the safety of drinking water systems by ensuring water flows in only one direction. This device responds to changes in pressure: when water flows correctly, the pressure opens the valve, allowing free movement. If pressure builds in the opposite direction, the valve closes, preventing potentially contaminated water from re-entering the supply system and protecting public health. Backflow preventers are essential in places like sprinkler systems, where water contamination risks are higher, making their installation in every system a vital safety measure.
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