型号QFF3主要零件材料：零件名称Partname阀杆Stem阀体Body阀底座Base填料Packing填料阀盖Packingbonnet手轮HandwheelQFF3-160-DN5碳钢Carbonsteel铬不锈钢Cr.Stainlesssteel聚四氟乙稀，柔性石墨碳钢Carbonsteel优质碳钢HighgradecarbonsteelQFF3-320-DN5铬镍不锈钢铬不锈钢Cr.Stainlesssteel铬镍不锈钢不锈钢主要性能规范：型号Type公称压力PNMpa试验压力PS(Mpa)_Testpressure工作压力(Mpa)Workingpressure工作温度(OC)Workingtemps.适用介质Applicablemedium壳体Shell密封(液)Seal密封(气)SealQFF3-320-DN532.048.035.20.632.0P≤540OC液化***水，酸，蒸汽，油品等C≤425OCQFF3阀组针型阀主要外形及连接尺寸：型号Type公称直径DN（mm）尺寸Dimension重量(kg)WeightLD1DoHH1L2QFF3-320-DN552001465234260543.8)