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1·Check to know the electromagnet reaction of the reversing valve.

检查各换向阀电磁铁动作是否灵活。

2·The reversing valve and the hydraulic oil source, the reversing valve and the rotating valve, the rotating valve and the stop valve are all connected.

换向阀与液压油源间、换向阀与转阀间和转阀与截止阀间均相连接。

3·The check is in the series of coil and four-way reversing valve control relay contact resistance increases, the bad, the contacts the voltage reduced.

经查是与四通阀线圈串联的控制继电器触点接触不良，电阻增大，致使电压降低。

4·In the lack of condition for the pressure test, it is not allowed to remove the lead sealing of the reversing valve to adjust the pressure regulating button.

在不具备压力试验条件时，不允许拆掉换向阀的铅封和调整调压弹簧座。

5·Timing hand-grip is moved in axial direction to realize multilevel timing, reversing valve is controlled with reversing hand-grip to realize reversing output.

用调速手柄作调速轴向移动，实现多级调速，用换向手柄控制换向阀，实现换向输出。

6·The proportional variable pump system made up with electrohydraulic proportional reversing valve and axial variable pump is a new kind of hydraulic dynamic structure.

由电液比例换向阀和轴向变量泵组成的比例变量泵系统是一种新型液压动力机构。

7·Via the mechanism research of the phenomenon of hydraulic shocks, the shock factors are found and designs of the rotating reversing valve and hydraulic system are finished.

通过液压冲击现象的机理研究，找到其影响因素，设计的旋转换向阀及液压系统。

8·The pipe string includes double hydraulic cylinder with anchorage packer, double hydraulic cylinder without anchorage packer, releasing tool, reversing valve and centralizer.

该工艺管柱主要由双缸液压锚定封隔器、双缸液压无锚定封隔器、液压丢手工具、换层开关、扶正器等工具组成。

9·TYB series waterflood pressure regulating systems consist of two cylinder four chamber pump body, electro hydraulic reversing valve, control fluid circuit and control current circuit.

TY B系列调压注水装置由双缸四腔泵体、电液换向阀、控制液路及控制电路组成。

10·The reversing driving device of the valve plug has the advantages of reasonable structure, good stopping property, high precision, easy to process, and suitable for the multi-channel conversion valve.

其阀芯旋转驱动装置结构合理，密封性好，精度高，便于加工，适合多路换向阀。