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Zurn Industries Backflow Prevention Preventers
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Zurn Industries 4 In. 475Stda Reduced Pressure Detector Assembly

SKU: 4-475STDA

$8,691.04

Price / Each

Originally $17,692.00 - Save 51%

Prices and information shown are subject to verification by our showroom personnel. In the event of a discrepancy, we reserve the right to make any corrections necessary. Freight charges may be applicable to certain products - if so, freight charges will be quoted separately.

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Product Details

Zurn Industries 4-475STDA

The Zurn Wilkins 475STDA Stainless Steel n-Pattern Reduced Pressure Detector Assembly is ideal for new or direct drop-in replacement, delivering convenience without compromise. Built for fire protection applications, this detector assembly has a metered by-pass to detect leaks and other water use. The patented AR spool offers flexibility in replacing older models with different lay lengths and maintains agency approvals when installed by the factory.


  • Collection 475
  • UPC 612052282800
  • Online Product ID 6194651
  • Length 35.13"
  • Width 32"
  • Height 38"
  • Made In USA
  • Low Lead Compliant yes
  • Material Ductile Iron,Stainless Steel
  • Unit Of Measure Each
  • Prop65 Warning Cancer and Reproductive Harm - www.P65Warnings.ca.gov
  • Minimum Order Quantity 1
  • Shipping L:35"x W:30.5"x H:38"

Additional information

  • For use with potable water pipes with a 4 in. diameter
  • OS and Y gate valves; GPM meter
  • Superior stainless steel body resists corrosion and extends the life of the product
  • Small, compact footprint allows for direct drop-in replacement
  • Time-tested check and relief valve components ensure easy maintenance and more water system uptime
  • Patented compound checks provide ultra-low pressure drop as documented by approval authorities, reducing the need for a booster pump
  • Patented AR spool for drop-in replacements, matching lay-lengths of common n-pattern valves
  • AR spool maintains agency approvals when installed by the factory
  • Backflow setter eliminates the need for concrete thrust blocks, allowing for easier installation and lower cost
  • Available in sizes 4 in. through 10 in.

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