Q21F外螺纹球阀产品特征公称压力：1.6-4.0MPa适用温度范围：-20～232℃～350℃适用介质：水、油、气体某些腐蚀性液体二、外螺纹球阀PN1.6MPa主要连接尺寸及重量公称通经(mm)尺寸(mm)dLL1ML0Q61带对接焊头总长68851520×1.51101661010851624×1.51101661510851830×21101722013901836×211018725171002042×211022732221202052×223540251352560×315025550321402572×3180291三、Q21F外螺纹球阀主要零件材料型号阀体球体、阀杆手柄密封圈垫片、填料Q21F-16C、Q21F-25CQ21F-40C、Q21F-64CA105、451Cr18/1Cr18Ni9Ti不锈钢SS304聚四氟乙烯PTFE对位聚苯PPL聚四氟乙烯PTFE对位聚苯PPLQ21F-16P、Q21F-25PQ21F-40P、Q21F-64P1Cr18Ni9TiSS304/1Cr18Ni9TiQ21F-16R、Q21F-25RQ21F-40R、Q21F-64RSS316/1Cr18Ni12Mo2TiSS316/1Cr18Ni12Mo2Ti)