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Lead Free* MasterSeries N-Pattern Double Check Valve Assemblies - Large Diameter

MasterSeries LF870V Lead Free* double check valve assemblies prevent the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. They feature an epoxy-coated ductile iron body and are available with NRS or OSY resilient wedge gate valves. Maximum working pressure: 175psi (12.1 bar).


  • Primarily used on potable drinking water systems where code mandates protection from backpressure and backsiphonage conditions
  • Inline serviceable assembly requires no special tools
  • Sizes 2 1⁄2 in. - 10 in. (65mm - 250mm)
  • Protects against possible backpressure and backsiphonage conditions for non-health hazard applications

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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: