Zurn Wilkins 350ABG - 4" Double Check Backflow Preventer with Butterfly valves

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 with grooved end butterfly valves with integral supervisory switches.
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 down time.
Available in flanged, grooved, or grooved x flanged end connections for installation versatility.