The DCVA consists of two independently operating check valves. The DCVA is acceptable backflow protection for low health hazards only and is predominantly used in irrigation systems and fire systems. Many water purveyors require that as a minimum, a DCVA be installed on the water service line to all commercial water uses, and residences with in-ground irrigation systems. The DCVA provides protection in back siphonage and back pressure backflow events.

Before installing any backflow assembly, the owner should contact a state certified, licensed, bonded, and insured backflow assembly technician, such as those here at BATMASTER, 425-397-0275, to make sure that you, (1) have a Washington State approved assembly, (2) know the installation requirements, and (3) to prevent costly mistakes.