5000CIV-OSY-CFM 6

This 6 inch reduced pressure zone backflow preventer assembly with its exclusive design incorporating the patented air-in and water-out principle for protection from the reverse flow of fire protection system substances from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. It is ideal for protection in continuous pressure piping applications and at cross-connections identified as health hazards and from other contaminants found at the service line entrance. This compact modular design for easy maintenance consists of an epoxy coated cast iron body, outside stem and yoke resilient seated gate valves, captured spring check valves, replaceable seats, test cocks, and a pressure differential relief valve. It comes furnished with a cubic feet per minute meter to detect underground leaks and unauthorized water use.