Apollo Dual Check Valve 40-300 Series

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Dual Check Valve, Wye Pattern Bronze Body, Inline Testable Options; NPS, Swivel, Meter Thread Connections. 3/8″ – 1″

Model Number: DUC40


The 1/2” – 1” Dual Check Valves shall be Apollo® Model DUC40 (40-300 Series). This valve shall be manufactured in America. The bronze body shall be configured with “wye” style checks for in-field serviceability. The device shall be available with options for three test cocks for in-line testing. The Apollo® Model DUC40 Dual Check Valves prevents backflow by either backpressure or backsiphonage resulting from a cross-connection between potable water lines and substances that are objectionable, but not health-hazards.


  • In-line repairable
  • Low pressure loss
  • Corrosion resistant
  • Compact and lightweight
  • Independently-acting check valves
  • Available in standard and swivel connections


  • Maximum Operating Pressure: 175 psi
  • Temperature Range: 33 °F – 180 °F
  • Vacuum Service to 29 in. Hg