LF709

Lead Free* Double Check Valve Assembly Backflow Preventers, Cast Iron, Sizes: 2 1/2 to 10 IN

  • Maximum flow rate at low pressure drop
  • Replaceable stainless steel seats
  • Modular, compact design to facilitate assembly and maintenance
  • Captured spring assemblies for safety
  • Advanced ArmorTek™ coating technology to resist corrosion of internals
  • Pressure sensors on IOT models, activated with add-on monitoring connection kit
  • Lead free* top-mounted test cocks
  • Approved for vertical flow-up installation

Select options below to identify the UPC, Order Code, and Repair Kit for a specific LF709

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