A backflow preventer is a device that is installed on the sprinkler system so that water will be able to go through it in one direction only. These one-way devices are critical in keeping potable and non-potable water from mixing. When it comes to protecting our drinking water, you need backflow preventers strategically installed to offer that protection.
A backflow system must be tested and certified annually. The exact requirements for backflow preventers can vary from jurisdiction to jurisdiction. During this test, water is manipulated through the device to make sure that check valves close and that relief valves open. Since backflow preventers are mechanical devices with metal, plastic, and rubber parts that are under constant water pressure, they are susceptible to failure and need replacement or repair. In some cases, full replacement of the device or assembly will be necessary to uphold the integrity of our water supply.