Seating forces are generated by the torque during closing uniformly around the entire circumference 关闭期间的扭矩产生阀座力，并均匀一致的作用在整个圆周周围。
2.
Note that stem load is applicable to gate valves only as this force is included in the seating force of globe and stop - check valves 注意，阀杆负载只适用于闸阀，因为截止阀和截止止回阀的阀座力包含了阀杆负载。
