The 8" 350ABG Double Check Backflow Assembly, with grooved end Butterfly gate valves with integral supervisory switches, protects against backsiphonage and backpressure in low health hazard applications for all market segments. The use of our Patented Compound Check guarantees reliable performance and improved flow characteristics. The backflows single access cover reduces maintenance downtime, while the grooved, epoxy-coated ductile iron body provide corrosion-resistance. Its lightweight design and short lay-length ensures easy, compact installation.