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Zurn Industries 3/4'' 350Xl Double Check Backflow Preventer

SKU: 34-350XL

$624.00

List Price / Each

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350XL (sm) Collection

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Product Details

Zurn Industries 34-350XL

The 3/4'' 350XL Double Check Valve Assembly is used in low health hazard, potable water applications for protection against both backsiphonage and backpressure of polluted water. A favorite for plumbing contractors, the patented and innovative EZSwap removable pressure vessel allows for simple, cost-effective maintenance and repairs, straightforward line flushing, quick winterization, low-lead law compliant design, and added water savings. Its stainless steel shut-off valve handles, hardware, and struts are corrosion-resistant and the durable UV resistant reinforced nylon EZSwap Pressure Vessel resists corrosion and mineral build-up to better withstand harsh outdoor conditions.


The 3/4 in. 350XL Double Check Valve Assembly is used in low health hazard, potable water applications for protection against both backsiphonage and backpressure of polluted water. A favorite for plumbing contractors, the patented and innovative EZSwap removable pressure vessel allows for simple, cost-effective maintenance and repairs, straightforward line flushing, quick winterization, Safe Drinking Water Act compliant design, and added water savings. Its stainless steel shut-off valve handles, hardware, and struts are corrosion-resistant and the durable UV resistant reinforced nylon EZSwap Pressure Vessel resists corrosion and mineral build-up to better withstand harsh outdoor conditions.


  • Collection 350XL (sm)
  • UPC 612052087191
  • Online Product ID 2972125
  • Length 12"
  • Width 4.6"
  • Height 5.6"
  • Weight 6 lbs.
  • Made In Taiwan
  • Made in USA yes
  • Low Lead Compliant yes
  • Material Low Lead Cast Bronze
  • Unit Of Measure Each
  • Prop65 Warning Cancer and reproductive harm - WWW.P65WARNINGS.CA.GOV
  • Minimum Order Quantity 1
  • Shipping L:12"x W:4.63"x H:5.63" 6 lbs.

Additional information

  • AWWA Compliant C510
  • Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California
  • Top-mounted test cocks allow for easy installation
  • EZSwap® pressure vessel reduces repair time and costs
  • Flush Tool (FLUSH) provides easy line flushing, saving up to 15 minutes per installation
  • Construction offers corrosion-resistance and winterization
  • Low-lead law compliant
  • ASSE® Listed 1015
  • IAPMO® Listed
  • CSA® Certified B64.5

About This Brand

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