If the 450-ton valve at the wellhead can be turned on, the oil flow should stop, and the spill could be ended quickly.
如果井口450吨重的阀门可以可以关上，油流就可以停止，那么溢油很快就可以停下来。
2
Crack resistant valvecan prevent the oil pipe rupture resulting in table control falling accident.
防裂阀可防止油管破裂导致工作台失控下降的事故。
3
If the input air quality is poor, can cause electromagnetic valve, the valve core oil pollution within the open mouth can't completely, the difficult open.