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Lead Free* Residential Fire Sprinkler System Dual Check Valves

The Watts Model LF07S Residential Fire Sprinkler Dual Check Backflow Preventer is designed for non-health hazard [i.e., pollutant] application on potable fire sprinkler service connections to protect against possible backsiphonage conditions that could inadvertently drain the fire sprinkler system.


  • Stainless steel springs
  • Silicone seat discs provide resistance against chemicals
  • Lead-free* brass body
  • Seats are replaceable

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Select options below to identify the UPC, Order Code, and Repair Kit for a specific LF07S

Approval Information

For approval information, please refer to the products specification sheet. For any other information on product certification and documentation information, please visit our certification partner websites: