High integrity shutoff gate valves can be used for hot tapping or in pipeline services where a soft pig is used if the seat ring installation lugs are removed 如果拆卸掉阀座环安装耳柄，则高度整体性关闭闸阀可以用在热水出口或采用软铁的管道系统中。
2.
Two integrally cast lugs on the disc prevent the disc from spinning in service . this exclusive feature helps extend valve life in difficult services by eliminating disc spinning 阀瓣上的两个整体铸造的耳柄防止阀瓣在运行期间出现旋转现象。这个独特的特征通过消除阀瓣在严酷的应用中出现旋转的现象，来帮助延长阀门的使用寿命。
