American Granby's Ductile Iron Butterfly Valve Installation Kit includes one HBFV Series Ductile Iron Butterfly Valve, two PF Series PVC Sch 80 Van Stone flanges, a bolt kit with steel nuts and bolts, as well as steel washers. The HBFV Series of Butterfly Valves helps to regulate and control the flow of water. The spring loaded lever lock handle and a notched throttling plate allow for excellent manual control of water flow. The plate features balancing control in 10 degree increments in any position with 90 degree arc disc rotation. The PVC Sch 80 Van Stone Flange features a two-piece van stone socket style that ensures a secure connection between pipes, valves, and fittings.