型号：220D蝶阀系列 规格：DN50～DN1000 温度：-15℃～150℃ 压力：1.0MPa～1.6MPa 阀体材质：灰铸铁、球墨铸铁 阀板材质：球墨铸铁电镀、球墨铸铁覆尼龙、不锈钢 阀座材质：EPDM、NBR、PTFE 阀杆材质：碳钢、不锈钢 Type: 220D Stainless Steel Wafer Butterfly Valve Specification: DN50 - 600 Temperature: -35℃ -150℃ Pressure: 1.0MPa/1.6MPa Materials of Body: CF8M, CF3M, CF8 Materials of Disc: Stainless Steel, Ductile Iron Coated Plastic Materials of Seat: EPDM, NBR, PTFE Materials of Stem: Stainless Steel, Carbon Steel