一、锻钢法兰闸阀概述锻钢闸阀整体法兰端阀门有三种阀盖设计，***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。整体法兰端阀门结构设计可用在闸阀、截止阀、立升式止回阀和旋启式止回阀。二、锻钢法兰闸阀闸阀的结构设计和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-25.三、锻钢法兰闸阀结构形式1.全通径或缩径2.结构长度按ANSI/A***EB16.103.法兰按ANSI/A***EB16.54.自密封阀盖5.明杆带支架6.两端自动调整的填料压套；7.本体倒密封8.整体阀体法兰9.对焊端按ANSI/A***EB16.2510.环连接阀体阀盖垫片11.用缠绕式垫片的螺栓型阀盖、螺纹密封、焊接型阀盖，或自密封阀盖四、锻钢法兰闸阀材料表序号名称美标碳钢美标合金钢美标不锈钢钢TypeA105TypeF22TypeF304(L)TypeF316(L)1阀体A105A182F22A182F304(L)A182F316(L)2阀座A276420A276304A276304(L)A276316(L)3闸板A276410&430A182F304A182F304(L)A182F316(L)4阀杆A182F6A182F304A182F304(L)A182F316(L)5垫片CorrugatedSS+graphiteSS+PTFE6阀盖A105A182F22A182F304(L)A182F316(L)7螺栓A193B7A193B16A193B8A193B8M8销A276T410A2763049填料压套A182F304(L)A182F316(L)10活节螺丝A193B7A193B16A193B8A193B8M11填料压盖A105A182f11A182F304(L)A182F316(L)12螺母A1942HA1944A1948A1948M13阀杆螺母A276410/Cu-Alloy(铜合金)14手轮锁紧螺母A1942HA1944A1948A1948M15铭牌SS16手轮A19717衬垫A47343118填料FlexibleGraphitePTFE适用介质(水、油、气等)W.O.G.etc(酸类)HNO3,CH3OOHetc适用温度-29℃～425℃-29℃～550℃-29℃～180℃注：可按要求采用其他材料CS=碳钢AS=合金钢SS=不锈钢五、锻钢法兰闸阀尺寸和重量表通径NPS1/23/411/411/22L(RF)L1(BW)150108117127140165178300140152165178190216600165190216229241292H(OPEN)150，300158169197236246283600169197236246283320W100100125160160180Weights150RF4.55.28.211.512.520.3BW2.83.35.47.18.212.5300RF4.86.29.31415.523.4BW3.54.46.88.19.215.4600RF5.97.410.416.217.528.3BW4.55.18.210.512.420.1通径NPS1/23/411/411/22L(RTJ)900，1500216229254279305368L1(BW)900,1500216229254279305368H(OPEN)197197236246283330W125125160160180200WeightsRTJ7.211.515.616.222.632.8BW5.29.312.413.818.927.5)