- Which method will prevent backflow?
- How can we prevent backflow in food establishment?
- What is one way of preventing backflow Servsafe?
- What is backflow in food safety?
- Do mop sinks need a backflow preventer?
The best method of preventing backflow is an air gap which either eliminates a cross- connection or provides a barrier to backflow. If an air gap is not practical, a mechanical backflow preventer, which provides a physical barrier to backflow, is the next best approved method.
Answer: C – An air gap is the only way to prevent backflow in drainage and sewage systems. This prevents harmful bacteria from seeping into sinks and other water receptacles in the restaurant.
An air gap is the only completely reliable method for preventing backflow.
Cross-connections may result in backflow that causes the contaminants to enter the pure water supply under certain conditions. A backflow is a change of pressure in a water pipe that forces water to flow opposite to its intended direction, allowing contaminants to enter the unprotected system.
Some sinks typically found in commercial businesses, such as a mop sink, are equipped with a backflow prevention device called an atmospheric vacuum breaker installed on the faucet. All commercial fire-sprinkler systems are required to have backflow prevention devices installed.