LF850 Small

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

  • Sensor signals to indicate when temperature nears the freezing point once activated by an add-on BMS/IMS connection kit
  • Compact modular design to facilitate maintenance and in-line repairs with a single access cover
  • In-line serviceable assembly requiring no special tools
  • Two in-line independent positive seating check modules
  • Replaceable seats and seat discs

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 (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