How Does a Backflow Prevention Device Work?

If you’re reading this blog, you probably know that you need a backflow prevention device. You probably also know why backflow testing is important. But you may not understand exactly how a backflow prevention device works.

To the average homeowner or business owner, these devices can seem pretty complicated. And if you’ve ever seen pictures of them, you know they can look pretty complicated, too! However, the concept behind them is simple.

Backflow prevention devices prevent the contamination of water sources. They use valves and pressure to shut off access to the potable water. This includes drinking water for your home, your neighborhood, or your entire community. It could also include drinking water for livestock or other animals.

Backflow is often caused by backpressure or backsiphonage. Backpressure means that the pressure is higher on the downstream side of the valve than on the upstream side of the valve. Backsiphonage can happen when there is a great demand on a water distribution system. In both of these situations, if a pressure differential occurs, the backflow prevention device will activate. It will shut down access to the potable water. Any water that contains contaminants, pollution, or pesticides will be blocked from entering the clean water source.

As you can see, backflow prevention devices play a very important role in keeping our drinking water clean. That’s why it’s so critical to have routine backflow testing. A backflow test will inspect all components of your backflow preventer. It will confirm that all valves are working as they should and that the pressures are at proper levels.

Unsure if you need a backflow preventer? Call Backflow Devices Testing & Repair. We’re experts in backflow prevention and testing in Georgia and Tennessee. We serve the Dalton and Chattanooga areas of Northwest Georgia and Tennessee. Let us help you keep your drinking water clean!