Zurn Industries Backflow Prevention Preventers
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Zurn Industries 4'' 350Ada Double Check Detector Backflow Preventer

SKU: 4-350ADA

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  • Product Type Preventer
  • Length 41.3"  Width 21.5"  Height 32.5"  Weight 484 lbs. 
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Product Details

Zurn Industries 4-350ADA

The 4'' 350ADA Double Check Detector Backflow Assembly, with flanged end OSandY gate valves, protects against both back siphonage and backpressure in low health hazard, fire protection applications. Featuring a metered bypass system, the 350ADA efficiently detects leaks and any unauthorized water use. Its single access cover reduces down time and added costs associated with maintenance and repairs. Lighter in weight than the 350DA Model, the 350ADA features a short lay-length for compact, versatile installation in horizontal or vertical positions.


The 4'''' 350ADA Double Check Detector Backflow Assembly, with flanged end OS&Y gate valves, protects against both backsiphonage and backpressure in low health hazard, fire protection applications. Featuring a metered bypass system, the 350ADA efficiently detects leaks and any unauthorized water use. Its single access cover reduces down time and added costs associated with maintenance and repairs. Lighter in weight than the 350DA Model, the 350ADA features a short lay-length for compact, versatile installation in horizontal or vertical positions.


  • Collection 350ADA
  • UPC 612052081014
  • Online Product ID 2972205
  • Product Line 480
  • Length 41.3"
  • Width 21.5"
  • Height 32.5"
  • Weight 484 lbs.
  • Made In USA
  • Made in USA yes
  • Low Lead Compliant yes
  • Material Ductile Iron
  • Unit Of Measure Each
  • Prop65 Warning Cancer and Reproductive Harm - www.P65Warnings.ca.gov
  • Minimum Order Quantity 1
  • Shipping L:41"x W:33"x H:22" 290 lbs.

Additional information

  • C-UL® Classified
  • FM® Approved
  • Horizontal or vertical installation offers versatility and reduces installation time
  • Leak and unauthorized water use detection decreases costs over time
  • Patented Compound Check offers reliable performance and improved flow characteristics
  • Lack of threads or taps in cover and body reduces corrosion exposure
  • ASSE® Listed 1048
  • AWWA Compliant C510 (with gates only), and C550
  • CSA® Certified B64.5
  • UL® Classified

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