0191210 (Ames-Deringer) | 2-1/2 Inch | SS Double Check Valve Backflow Preventer Assembly | Colt | NRS Shutoff Valves | Tri-Link ChecksThis Colt 2 1 2 Inch Stainless Steel Double Check Valve Backflow Preventer Assembly is Designed to Prevent The Reverse Flow of Objectionable But Not Toxic Water 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 at Cross Connections Identified as Non Health Hazards And From Other Contaminants Found
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