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碳钢法兰硬密封蝶阀适用于电力，热力、高温煤气、可燃性气体、热空气、城市供热、供水、污水处理、化工、冶金、制糖、造纸、造船、航空、钢铁等企业。法兰式硬密封蝶阀设计采用三偏心原理，开启密封即分离，关闭接触即密封，因此密封性能可靠。
法兰式硬密封蝶阀阀主要零部件材料：
阀体：铸钢、不锈钢、铬镍钼钛钢
阀板：不锈钢、铬镍钼钛钢
阀杆：2Cr13、不锈钢、铬镍钼钛钢
填料：氟塑料、柔性石墨
法兰式硬密封蝶阀采用标准：
法兰连接：GB9115.8-88、GB9115.11-88 GB12224
结构长度：GB12221-89
压力试验：GB/T13927-92
传动方式：手动、蜗*传动、气动、电动
法兰式硬密封蝶阀性能规范：
公称通径DN(mm)：50～1000
公称压力PN(MPa)：1.0～2.5、150Lb、10K
Carbon steel flange seal butterfly valve suitable for electric power, heat, hot gas, flammable gas, hot air, urban heating, water supply, wastewater treatment, chemical, metallurgy, sugar, paper, shipbuilding, aviation, steel and other enterprises . Flanged Hard Seal Butterfly Valve designed with three eccentric principle, to open sealed or isolated, close contact with the seal, sealed and reliable performance. Flanged Hard Seal Butterfly Valve Material major components: Body: steel, stainless steel, chromium-nickel-molybdenum and titanium steel Valves: stainless steel, chrome-nickel, molybdenum and titanium steel Stem: 2Cr13, stainless steel, chrome-nickel, molybdenum and titanium steel Packing: fluorine plastic, flexible graphite Flanged Butterfly Valve Standard: Flange connections: GB9115.8-88, GB9115.11-88 GB12224 Structure length: GB12221-89 Pressure test: GB/T13927-92 Transmission: Manual, Worm * transmission, pneumatic, electric Flanged Butterfly Valve Performance Specifications: Nominal diameter DN (mm): 50 ~ 1000 Nominal pressure PN (MPa): 1.0 ~ 2.5,150 Lb, 10K