475DA/475DAV

475DA/475DAV

475DA/475DAV

475DA/475DAV

The 475DA/475DAV Reduced Pressure Detector Backflow Assembly is utilized in high hazard, fire protection applications to protect against both backsiphonage and backpressure. The 475DA is shaped in the n-Pattern for new or retrofit installations in compact spaces, while the 475DAV is shaped in the z-Pattern and installed vertically in a flow up orientation. Both models include a small footprint for quick and easy fire protection retrofit applications, as well as a metered bypass system to detect leaks and any unauthorized water use, saving you valuable time and money on repairs and maintenance costs.

  • The models small footprint is ideal for fire protection retrofits and aids in reducing installation time
  • Metered bypass detects unauthorized water usage or leaks
  • Designed for installation in fire protection systems where a potential high health hazard exists
  • FDA approved fusion epoxy finish and ductile iron body resists corrosion
  • 475DA assembled in n-Pattern; 475DAV assembled in vertical up flow z-Pattern
  • OS&Y gate valves come standard on the 475DA/475DAV with additional gate valve options and connections available to provide installation versatility
  • ASSE® Listed and AWWA Compliant
  • Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California
  • UL® Classified and C-UL® Classified
  • FM® Approved

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