Zurn Wilkins 4" 350ASTBG Double Check Backflow Preventer (butterfly gate valves) with stainless steel body

Provides low hazard protection with a corrosion resistant and light weight design.
Multiple shut-off and end connections are available for installation versatility.
4" double check valve assembly with stainless steel body - grooved butterfly gate valves with integral supervisory switches.
Short lay-length for small space installation.
Reliable performance and improved flow characteristics from patented Compound Check, allowing for installation in lower-pressure systems.
Available as 350ASTR for custom length, drop in replacement.
Ideal for any backflow replacement.
Lower maintenance costs from corrosion resistance of stainless body.
Available in flanged, grooved, or grooved X flanged end connections for installation versatility.