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LF850 Small

Lead Free* Double Check Valve Assembly Backflow Preventers - Small Diameter

  • Replaceable seats and seat discs
  • Two in-line independent positive seating check modules
  • Compact modular design facilitates easy maintenance with a single access cover for in-line repairs
  • Inline serviceable assembly requires no special tools

Select a Model

Select options below to identify the UPC, Order Code, and Repair Kit for a specific LF850 Small

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