主要零件材料：  零件名称阀体、阀盖密封圈填料填料压盖阀杆垫片J41B-25C铸钢巴氏合金聚四氟乙 烯碳钢聚四氟乙 烯J41B-25Z灰铸铁J41B-25P不锈钢不锈钢J41F-25Z灰铸铁 碳钢性能规范：公称压力PN（MPA）试验压力PS（MPa）适用介质适用温度（℃）2.53.8氨气、氨液等NH3巴氏合金-40℃+150℃四氟-40℃+200℃4.06.4主要尺寸及重量：公称通径DN（mm）尺 寸（mm）LDD1D2D4bff1Z-φd关开D3101309060403516244-φ14165185110151309565454016244-φ141651851102015010575555118244-φ141702001202516011585655818244-φ1419721012032180135100786620244-φ1819921314040200145110857620344-φ18248264160502301601251008822344-φ182652951806529018014512011024348-φ183103492208031019516013512126348-φ183403572401003502301901601503034.58-φ233804132801254002702201881763234.58-φ254304513201504803002502182043234.58-φ255054923602006003603102782603434.512-φ25550806400250650425370335313634.512-φ307308804503007504854303903644034.516-φ30-995550上海J41B氨用截止阀_圣核阀门制造（上海）有限公司
http://ayfamen.com/1.html