The Zurn Wilkins 350 Double Check Valve Backflow Preventer provides low hazard protection for all applications. The flanged, epoxy coated ductile iron body is available with multiple shut-off valve options for installation versatility.
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6" 350 Double Check Valve Backflow Preventer
2-1/2" 350 Double Check Valve Backflow Preventer
3" 350 Double Check Valve Backflow Preventer
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Model 350 (2 1/2" and 3") Repair Video (Video)