Zurn Industries - 212-350ASTOSY - 2-1/2'' 350AST Double Check Backflow Preventer with flanged end OS&Y gate Vlvs

Zurn Industries - 212-350ASTOSY

The 2-1/2'' 350ASTOSY Double Check Backflow Assembly, with flanged end OSandY gate valves, protects against back siphonage and backpressure in low health hazard applications. The use of our Patented Compound Check guarantees reliable performance and improved flow characteristics, making installation ideal for lower-pressure systems. Its 304L grade stainless steel valve body and access covers are corrosion-resistant for lower lifetime maintenance costs. Its lightweight design and short lay-length also ensures easy, compact installation.

Collection: 350AST
UPC: 612052112121
Online Product ID: 5729217
Length: 40"
Width: 18"
Height: 31.5"
Weight: 40 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:  146 lbs.


  • Stainless steel body and access covers offer corrosion-resistance
  • Lightweight design and short lay-length ensures easy, compact installation
  • Ideal for any Backflow Preventer replacement
  • Model 350ASTR available for custom length, drop-in replacements
  • ASSE Listed 1015
  • AWWA Compliant C510 (with gates only), and C550
  • UL Classified
  • C-UL Classified
  • FM Approved
  • CSA Certified

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

212-350ASTOSY - Zurn Industries

Winthrop Supply is proud to present this decorative preventer, by Zurn Industries. The 212-350ASTOSY is made from premium materials, this Preventer offers great function and value for your home. This fixture is part of Zurn Industries's decorative 350AST 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.

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