400B 1 1/2

This 1 1/2 inch reduced pressure zone backflow preventer assembly is designed to prevent the flow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. Its compact modular design facilitates easy maintenance with a separate access cover for in-line repairs. It is ideal for protection in continuous pressure piping applications and at cross-connections identified as health hazards and for contaminants found at the service line entrance. This assembly consists of a bronze body, top mounted test cocks, NPT end connections, shutoff valves with lever handles, two poppet style check valves, replaceable check seats, and a bottom mounted relief valve for reduced installation clearances.