NKZ41H真空法兰闸阀主要性能规范Chiefpropertyandspecification试验压力Testpressure公称压力PN/MPaNominalpressure试验压力/MPaSealtest壳体强度试验Shellstrength上密封试验Backsealtest密封试验Seattest1.01.51.11.11.62.41.81.82.53.82.82.84.06.O4.44.46.48.67.O7.01O.O15.O11.O11.O使用范围Applicable产品类型Producttype适用介质Applicablemedium适用温度/℃ApplicabletemperatureNKZ41HNKZ44HNKZ944H-C型NKZ941H水、蒸汽、空气Water，Steam，Air≤425NKZ41H(Y)NKZ44H(Y)-I型NKZ944H(Y)-I型NKZ941H(Y)水、蒸汽、空气Water，Steam，Air≤550主要零件材料Materialsformainparts零件名称Partname阀体、阀盖BodyBonnet阀杆Stem闸板Wedgegate密封面Sealingface阀杆螺母Yokenut填料Parking紧固件FastenerNKZ44HNKZ41H-C型NKZ944H-C型NKZ941HWCB2Crl325H：合金钢H：alloysteel铝青铜Albronze膨胀复合石墨ExpandingcomDoundgraphite优质碳钢High-gradecarbonsteelNKZ44NKZ41Y-I型NKZ944-I型NKZ941铬钼钢Cr.Mosteel20CrlMo1VA38CrMoAlA铬钼钢Cr.MosteelY：硬质合金Y：carbidealloy铬钼钢Cr.Mosteel)