LF4000B

Lead Free* Cast Silicon Copper Alloy Reduced Pressure Zone Assembly Backflow Preventers

  • Internal relief valve reduces installation clearances
  • Single, top-access cover and modular check construction for ease of maintenance
  • Large body passages provide low pressure drop
  • Lead Free* cast silicon copper alloy construction for durability

Select options below to identify the UPC, Order Code, and Repair Kit for a specific LF4000B

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