A 2 inch backflow preventer is a 2-inch bronze double check backflow device with two brass ball valves for easy shut-off and four ball valve test cocks.

It is used to stop the flow of contaminated water should it reverse direction in a situation referred to as backflow. The backflow preventer keeps the water from flowing back into the potable water supply until water pressure is increased and maintained, allowing water to once again flow in the proper direction.

For all of your backflow prevention needs, call City Backflow Testing.