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.

  • 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
RK4-350

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

BRK4-LBF-SEAT1RTNR

Quickly swap out what you need with the Check #1 Seat Retainer Repair Kit for 2-1/2" - 4"  for Zurn backflow preventors 350/375/450/475. Pack of 6 check seat retainers.

BRK4-LBF-SEAT2RTNR

Quickly swap out what you need with the Check #2 Seat Retainer Repair Kit for 2-1/2" - 4"  for Zurn backflow preventors 350/375/450/475. Pack of 6 check seat retainers.

RK4-350CK1

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

RK4-350CK2

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

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