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Lead Free* MasterSeries In-Line Reduced Pressure Zone Detector Assemblies (Type-II) - Large Diameter

MasterSeries LF866 Lead Free* reduced pressure zone detector assemblies are specifically designed to protect against possible backpressure and backsiphonage conditions for high hazard (toxic) application in accordance with local governing water utility codes. The LF866 features Lead Free* construction to comply with low lead installation requirements. They feature an epoxy-coated ductile iron body and OSY shutoff valves. Maximum working pressure: 175psi (12.1 bar).


  • Inline serviceable assembly requires no special tools
  • Primarily used on potable drinking water systems where code mandates protection from backpressure and backsiphonage conditions
  • Protects potable water against cross-connection contamination of high hazard (toxic) fluids in water services
  • Sizes 2 1⁄2 in. - 10 in. (65mm - 250mm)

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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: