Backflow prevention protects potable water systems from potential hazards. There are over 10,000 reported cases of backflow contamination each year. Backflow devices are required by law and must be installed in accordance with plumbing or building codes. There are many different types of backflow preventers used in various applications.

During normal operation, the pressure between the two check valves, referred to as the zone of reduced pressure, is maintained at a lower pressure than the supply pressure. If either check valve should leak, the relief valve is designed to open and discharge water to the outside. An RPZ will periodically discharge small amounts of water due to fluctuation in line pressure up or downstream of the assembly. For this reason, the RPZ should be installed in areas that are not subject to water damage and allow adequate drainage.

Reduced Pressure Zone Assemblies, or RPZs for short, are the most complex, but safest type of backflow preventer available today. Installed between the city's water supply and the plumbing system of large residential and commercial structures, RPZs protect the water supply from any backflow contamination. They achieve this through a variety of safety measures. Call us at 919-293-1221 to find out more about your backflow prevention.