Watts 0389424|WW0389424 - 4 909-DNRS-S-FDA

This 4 inch reduced pressure zone assembly backflow preventer with its exclusive design incorporating the air-in and water-out principle for protection during an emergency condition prevents the flow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure. It is ideal for protection in continuous pressure piping applications and at cross-connections identified as health hazards and contaminants found at the service line entrance. This assembly consists of a fused epoxy coated cast iron body using ArmorTek(TM) coating technology for advanced corrosion resistance construction, domestic non-rising stem resilient seated gate valves, captured spring check valves, replaceable seats, top mounted test cocks, FDA epoxy coated strainer, and a field reversible pressure differential relief valve. The coating on this backflow assembly uses ArmorTek technology to resist corrosion due to microbial induced corrosion (MIC) or exposed metal substrate.