LF860 Large

Lead Free* MasterSeries In-Line Reduced Pressure Zone Assembly Backflow Preventers - Large Diameter

  • Utilizes advanced ArmorTek coating technology to build in electrochemical corrosion inhibitor and microbial inhibitor to resist corrosion of internal parts
  • Combines the use of a stainless-steel relief valve seat and stainless-steel check components for maximum performance and durability
  • Requires no special tools for inline service
  • Sizes 2 1/2 to 10 Inch
  • Is highly suitable for potable drinking water systems where code mandates protection from backpressure and backsiphonage conditions
  • Protects potable water against cross-connection contamination of high hazard (toxic) fluids in water services

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

Approval/Certification Information

For product-specific approval information, please refer to the product’s specification sheet 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