锻钢闸阀有三种阀盖设计，第一种是螺栓型阀盖，通过凹凸面连接，采用不锈钢带与柔性石墨缠绕垫片，按需求也可采用环连接，第二种是焊接型阀盖，通过螺纹密封后焊接，按需求也可直接采用刚性焊接，第三种是自密封阀盖，通过螺纹与自密封阀盖连接。锻钢闸阀的结构设计与规范：锻钢闸阀制造按API602,BS5352,ANSIB16.34.试验与验收按API598,标识按照MSSSP-25.结构型式如下：1.全通径或缩径；2.明杆带支架；3.两端自动调心的填料压套；4.用缠绕式垫片的螺栓型阀盖、螺纹密封焊接型阀盖，或自密封阀盖5.本体倒密封；6.承插焊接ANSI/ASMEB16.11;7.螺纹端(NPT端)按ANSI/ASMEB1.20.1。材料表：序号NO.名称美标碳钢CStoASTM美标合金钢AStoASTM美标不锈钢钢SStoASTMPartNameTypeA105TypeF22TypeF304(L)TypeF316(L)1阀体BodyA105A182F22A182F304(L)A182F316(L)2阀座SeatRingA276420A276304A276F304(L)A276F316(L)3闸板WedgeA276430&410A182F304A182F304(L)A182F316(L)4阀杆StemA182F6A182F304A182F304(L)A182F316(L)5垫片GasketCorrugatedSS+graphiteSS+PTFE6阀盖BonnetA105A182F22A182F304(L)A182F316(L)7螺栓BonnetBoltA193B7A193B16A193B8A193B8M8销PinA276420A276F3049填料压套GlandA276410A182F304(L)A182F316(L)10活节螺丝GlandEyeboltA193B7A193B16A193B8A193B8M11填料压盖GlandFlangeA105A182F11A182F304(L)A182F316(L)12螺母GlandNutA1942HA1944A1948A1948M13阀杆螺母StemNutA276420/Cu-Alloy(铜合金)14手轮锁紧螺母H.W.LockNutA1942HA1944A1948A1948M15铭牌NameplateSS16手轮HandwheelA19717衬垫BearingGasketA47343118填料StemPackingFlexibleGraphitePTFE适用介质SuitableMedium(水、油、气等)W.O.G.etc(酸类)HNO3,CH3OOHetc适用温度SuitableTemperature-29℃～425℃-29℃～550℃-29℃～180℃注：可按要求采用其他材料Note:Othermaterialsareavailableuponrequest.CS=碳钢AS=合金钢SS=不锈钢CS=CarbonSteel;AS=AlloySteel;SS=StainlessSteel;尺寸和重量表Dimensions(mm)andWeights(Kg)通径缩径RB3/81/23/4111/411/22NPS全径FB3/81/23/4111/411/22L150～800Lb797992111120120140178900Lb79921111201201401782101500Lb111111111114120140162210H(OPEN)150～800Lb158158169197236246283330900～1500Lb169197197236246283330354W150～800Lb100100100125160160180200900～1500Lb100125125160160180200240WeightsBolted150～800Lb2.12.02.34.35.96.911.115.2900～1500Lb2.54.34.26.68.812.517.223.5Welded150～800Lb1.81.72.03.85.16.110.214.2900～1500Lb2.44.24.06.38.712.117.222)