进口截止阀的阀杆轴线与阀座密封面垂直。
Imports of cut-off valve stem and valve seat sealing surface perpendicular to the axis.
为了保证关闭严密，阀瓣与阀座密封面进行的研磨。
To ensure tight closure, and the valve seat valve sealing surface of the ground.
正向介质压力增大时阀板斜圆锥表面与阀座密封面挤压越紧，密封效果越好。
Medium pressure increases toward the valve seat surface and oblique cone sealing surface squeeze is tightening, sealing the better.
应用推荐