Zurn Industries - 34-375ST - 3/4'' 375ST Reduced Pressure Principle Backflow Preventer

Zurn Industries - 34-375ST

The 3/4'' 375ST Reduced Pressure Principle Backflow Assembly offers high hazard protection against both backsiphonage and backpressure of contaminated water into the potable water supply. Materials include engineered plastic construction and quality 300 series stainless steel fasteners, springs, ball valves, and struts. The 375ST is utilized in systems where liquids are corrosive to copper alloys like bronze valves, including medical diagnostic equipment applications, food processing, distilleries, and breweries. It comes standard with full port QT ball valves, and features a maximum working water pressure of 175 psi, maximum working water temperature of 180°F, and hydrostatic test pressure of 350 psi.

Collection: 375 (sm)
UPC: 612052070025
Online Product ID: 2972129
Length: 14"
Width: 8"
Height: 4.8"
Weight: 7 lbs.
Made in USA: Yes
Low Lead Compliant: Yes
Prop65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Minimum Order Quantity: Yes
Shipping:  7 lbs.


  • Multiple valve options for every application eases installation
  • Repair Kits provide cost savings by avoiding full Backflow Preventer replacement
  • Applicable for systems that are corrosive to bronze valves
  • All stainless steel and engineered plastic construction resists corrosion
  • Low-lead law compliant
  • ASSE Listed 1013
  • CSA B64.4
  • Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California
  • Certified to NSF/ANSI 372* by IAPMO R&T
  • NSF Listed-Standard 61, Annex G

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

34-375ST - Zurn Industries

Winthrop Supply is proud to present this decorative preventer, by Zurn Industries. The 34-375ST is made from premium materials, this Preventer offers great function and value for your home. This fixture is part of Zurn Industries's decorative 375 (sm) 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

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