What can be used to prevent backflow in drinking water systems?

Check valves are designed specifically to prevent backflow in drinking water systems. They operate by allowing water to flow in one direction only and automatically closing when there is a reverse flow condition. This is crucial in protecting the drinking water supply from contamination, as backflow can occur due to changes in pressure within the water distribution system, which could allow potentially contaminated water to flow back into the clean water supply.

Use of check valves is a standard practice in water distribution systems to maintain the integrity of drinking water. They are commonly installed in various parts of the system, such as at the service connection or near pumps, to ensure that backflow is prevented effectively.

While release valves, control valves, and pressure reduction valves serve important functions within water systems, they do not specifically address the backflow prevention that is critical to safeguarding potable water supplies. Their roles pertain more to managing flow rates, pressure levels, or releasing pressure rather than stopping reverse flow.