J41H/Y、J5（6、9）41H/Y、J61Y/H、J5（6、9）61Y/H铸钢截止阀产品概述该产品严格按BS1873、API6D、GB/T12235标准设计制造，截止阀的阀瓣沿着中心定位作升降运动，(衬套采用耐磨性能好，摩擦系数小的特殊材料制作)，动作灵活可靠，密封性能优良。产品广泛应用于石油、化工、制药、电力行业等各种工况的管路上。特点及优点●手轮采用可锻铸铁铸造，造型配合手握，适当增加摩擦力，方便开启。并示有明显的“开”、“关”标记。较大口径、较高压力的可选用撞击式手轮。●阀杆螺母采用高镍球铁，“T”形螺纹与阀杆配合传递力矩。随着口径、压力的增大可增加一至二个推力轴承，以适当减小操作力矩。并设有油杯定期补充固体润滑油。保持轻松启闭。阀盖上填料压盖和压套分体设计，保证阀杆的同心度。合理的填料函确保阀门没有外漏。符合环保要求。●阀盖设有上密封座。符合美国石油协会API和英国BS标准的要求。●截止阀的中法兰连接螺栓采用合金钢双头螺栓。方便维修、拆卸。阀座采用螺纹连接的可更换式阀座。使用安全、维修方便。●DN250以下的铸件为精密铸造，每批铸件都有炉号标识，便于跟踪。国标截止阀主要安装尺寸及重量：(单位:mm)http:///p?id=46GB1.6MPaDN101520253240506580100125150200250300350400L130130150160180200230290310350400480600650750850950H20021825827528033035040040041546051071083092512501380D0120120140160180200240280320360360400400500600800800Wt4.95.37.07.48.512.51625293379951804406507501150GB2.5MPaDN101520253240506580100125150200250300350400L130130150160180200230290310350400480600650750850950H20021825827528033035040040041546051071083092512501380D0120120140160180200240280320360360400400500600800800Wt4.95.37.07.48.512.51625293379951804406507501150GB4.0MPaDN101520253240506580100125150200L130130150160180200230290310350400480600H200235275285303355375410435480588610720D0120120140160180200240280320360400400400Wt4.95.77.07.48.816243344.5609099190GB6.4MPaDN101520253240506580100125150200L170170190210230260300340380430500550650H200200230275325360410435485575630650815D0120140160180200240280320360400400450500Wt5.81013151625354856115132158284GB10.0MPaDN101520253240506580100125150200L170170190210230260300340380430500550650H200203230275325360410450545620730840925D0120140160180200240280320400400450500550Wt61113151929486585125148310588)