F0191329 (Ames-Deringer) | 10 C500N-OSY-G-FS | No | Flanged X FlangedThis Colt 10 Inch Reduced Pressure Detector 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 at Cross Connections Identified as Health Hazards Such as on Fire Sprinkler Systems And From Other Contaminants Found at The Service Line Entrance.