The shear ram valve not only can shear wire ropes, but also can close a well mouth, thereby largely satisfying the safety of pumpingoperation in an oil filed.
本实用新型既能剪切钢缆又能封闭井口的装置，极大地满足了油田捞油作业的安全。
2
In operation, to a fault and will inevitably damage, which can not be normal pumping.
在运行中，难免会发生故障和损坏，以致不能正常抽水。
3
Oil pipeline pumping stations may be classified by the function or purpose, by the type equipment used, by the method of operation, or by the material pumped.