Product DescriptionButterfly valves are typically used to control fluid with high flow and low dropout. Features of this type of valves include small size, low cost, small installing space and simple structure.Bodies of butterfly valves are provided with smooth fluid passage, the drag coefficient of which is low enough to achieve comparative high flow, and therefore to be applicable for flow rate control of mediums such as silt, pulp and those with high viscosity, fiber and particles.1.Elastic property of composite metal sealing ring to perform zero leakage2.It eLntrinsical fireproof property thanks to all metal structure and leak-tight performance3.liminates the friction between the seat and sealing ring in 90 rotation