F0691560 (Ames Deringer) 6 5000SS OSY LM FS No Flanged X Flanged DOC. This 6 Inch Reduced Pressure Zone Backflow Preventer Assembly is Designed to Prevent The Reverse Flow of Fire Protection Substances And Water of Non Potable Quality From Being Pumped or Siphoned 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 Compact Modular Design Comes Without a Meter And Consists of a Short Lay Length Lightweight Stainless Steel Body, Outside Stem And Yoke Resilient Seated Gate Valves, Test Cocks, Thermoplastic Cam Check Valves, And a Corrosive Resistant Stainless Steel Bottom Mounted Relief Valve. This Backflow Assembly Contains a Flood Sensor With Sentryplus Alert Technology to Detect Excessive Water Discharges From The Relief Valve. When Activated Through an Add On Sensor Connection Kit, The Flood Sensor Can Send an Alert to Notify Personnel About Potential Flooding. Add On Sensor Connection Kits Are Available For Bms And Cellular Communications. Ames Deringer F0691560