4-350A - Double Check Backflow Preventer

4-350A - Double Check Backflow Preventer

The Zurn Wilkins 350A Double Check Valve Backflow Preventer provides low hazard protection for all market segments. The grooved, epoxy coated ductile iron body is available with multiple shut-off valve options for installation versatility.

To view all options, see the Specification Sheet - 350A

UPC: 612052081021

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Product Resources

Spec Sheets & Install

BIM / 3D Models / 2D Drawings

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Features And Benefits

  • 4" double check valve assembly - grooved gate valve connections
  • Short lay-length for small space installation
  • Reliable performance and improved flow characteristics from patented compound check
  • No threads or taps in body or cover, eliminating exposure to corrosion
  • Single access cover reduces maintenance downtime
  • Available in flanged, grooved, or grooved x flanged end connections for installation versatility
Proportion 65
Lead Free
Retrofit or Replacement
MasterSPEC
Zurn Wilkins
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Repair Parts

4" Model 350/450, 2-1/2" - 4" Model 350A Rubber Only and 2-1/2" - 4" Model 375/475 Checks Rubber Only Repair Kit

Check #1 Seat Retainer Repair Kit for 2-1/2" - 4" 350/375/450/475

Check #2 Seat Retainer Repair Kit for 2-1/2" - 4" Models 350/375/450/475

First Check Assembly Repair Kit for 2-1/2", 3" and 4" 350A/350ADA and 4" 350/350DA/450/450DA

Second Check Assembly Repair Kit for 2-1/2", 3" and 4" 375A/350ADA and 4" 375/350/475/450

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