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Backflow Preventers & Accessories

Dual Check (DUC)


The DUC consists of a lead free cast copper construction, with two plastic replaceable check valves, and stainless steel springs.  This is a non-testable device that is designed for low hazard residential water system containment in a continuous pressure application.  The dual check is installed immediately downstream of the residential water meter, generally in a horizontal position.  Configured with a meter connection nut (MCN) at the inlet, it is designed to thread directly onto the outlet of the water meter saving one connection in a residential water meter setting.

  • Models available for connection to 5/8”, 3/4" and 1” water meters
  • Low head loss
  • Industry lay lengths for easy replacement