LF860-FS Large

Lead Free* MasterSeries In-Line Reduced Pressure Zone Assembly Backflow Preventers with Flood Sensor - Large Diameter 2-1/2 - 10 IN Sizes

  • Integrated sensor on relief valve for flood detection
  • Flood alert feature available with add-on connection kit, compatible with BMS and cellular communication
  • Advanced ArmorTek coating technology with built-in electrochemical corrosion inhibitor and microbial inhibitor to resist corrosion of internal parts
  • Stainless-steel relief valve seat and stainless-steel check components for maximum performance and durability
  • Highly suitable for potable drinking water systems where code mandates protection from backpressure and backsiphonage conditions
  • Potable water protection against cross-connection contamination of high hazard (toxic) fluids in water services

Select options below to identify the UPC, Order Code, and Repair Kit for a specific LF860-FS Large

Approval/Certification Information

For product-specific approval information, please refer to the product’s specification sheet (see literature section above) or ask a Watts representative. For general information regarding any approval certification partners identified in the specification sheet, please visit our certification partners’ websites:


ASSE CSA FM Approvals NSF
UL ULC USC WQA