Zurn Industries - 4-475DAV - 4'' 475DAV Reduced Pressure Principle Backflow Preventer

Zurn Industries - 4-475DAV

The 4'' 475DAV Reduced Pressure Detector Backflow Assembly, with OSandY gate valves, is utilized in high health hazard, fire protection applications for protection against both back siphonage and backpressure of contaminated water into the potable water supply. The 475DAV is shaped in the z-Pattern and installed vertically in a flow up orientation. It includes 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.

Collection: 475DA
UPC: 612052047904
Online Product ID: 5729292
Length: 47"
Width: 37"
Height: 44.5"
Weight: 326.285 lbs.
Made in USA: Yes
Low Lead Compliant: Yes
Listing: UL, C-UL
Prop65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Minimum Order Quantity: Yes
Shipping: x W:44"x H:37" 400 lbs.


  • 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
  • ASSE Listed
  • AWWA Compliant
  • UL Classified
  • C-UL Classified
  • FM Approved
  • Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California

Professional delivery is available for every product we sell. We would be happy to coordinate delivery for you!

4-475DAV - Zurn Industries

Winthrop Supply is proud to present this decorative preventer, by Zurn Industries. The 4-475DAV is made from premium materials, this Preventer offers great function and value for your home. This fixture is part of Zurn Industries's decorative 475DA Collection, so make sure to check out other styles of fixtures to accessorize your room.

Zurn places the customer first, building value and trust through superior knowledge of the global markets we serve. Our products and services will continue to provide innovative water solutions delivered by exceptional people. Zurn Engineered Water Solutions® is a recognized leader in commercial, municipal, and industrial markets. Zurn manufactures the largest breadth of engineered water solutions in the industry, including a wide spectrum of sustainable plumbing products. Zurn delivers total building solutions for new construction and retrofit applications that enhance any building’s environment.

Zurn Industries Warranty