Backflow Preventers, Double Check

Zurn Double Check Valve Backflow Preventers are mechanical safety devices installed in water distribution systems to prevent the reverse flow of contaminated water back into the public water supply through cross-connections in commercial and residential properties. These assemblies feature two independently operating check valves with test cocks that allow water utilities and certified backflow testers to verify proper operation and ensure compliance with state and local cross-connection control programs. Water utilities require the installation and annual testing of Zurn double check valve assemblies at specific locations such as irrigation systems, commercial buildings, and industrial facilities to protect public health and maintain the integrity of municipal drinking water systems.