88009308 (Watts) | 2-1/2 Inch | Cast Iron Reduced Pressure Zone Backflow Preventer Assembly | Osy Shutoff | Armortek Coating | Backflow Flood SensorThis 2 1 2 Inch Lead Free Reduced Pressure Zone Backflow Preventer Assembly Prevents The Reverse 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 From Other Contaminants Found at The Service Line Entrance. This Assembly Consists of an Epoxy Coated Cast Iron Body,