The Lead Free* Dual Check Valve Backflow Preventer shall be ASSE® Listed 1024 and be UL Classified. The main body shall be Lead Free* brass featuring replaceable seats and silicone seat discs. The check assemblies shall have captured springs to prevent injury. The Dual Check Valve shall be a Watts Model LF07S.
The Model LF07S is typically installed for service on residential fire sprinkler systems. It is recommended this device is installed after a water meter and/or isolation shutoff valve with installation techniques that comply with the latest edition of the Uniform Plumbing Code. Please consult Local Governing Code for proper installation and agency code requirement.