The Zurn Wilkins 350ADA Double Check Detector Backflow Preventer is ideal for fire protection applications, with a metered by-pass to detect leaks and unauthorized water use. Used in low health hazard applications.
Features:
•2-1/2 double check detector assembly 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
•Resilient wedge OS&Y gate valves standard
•Approved in horizontal and vertical positions
•Available in flanged, grooved, or grooved x flanged end connections for installation versatility
•No threads or taps in body or cover, eliminating exposure to corrosion
•Single access cover reduces maintenance down time