Through its analysis of hydraulic performance, the cone-way valve can work well when hydraulic loss is very small, and we can get the change rule of the fluid pressure and the speed .

通过对其水力性能的分析， 表明该阀可在极小水力损失情况下正常工作，并得到了该阀阀板前后部流体压力及速度变化规律。

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The winch adopted valve-controlled proportional speed regulation hydraulic drive and PLC control to realize stepless speed change of the winch drum and coordinating control of the cable layer.

管线绞车采用阀控比例调速液压驱动、LC控制，实现了卷筒的无级变速和排缆器的协调控制。

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Stainless steel pneumatic flange ball valve in the pipeline is mainly used to do the cutting speed, distribution and change the direction of the flow of media.

不锈钢气动法兰球阀在管路中主要用来做切断速度快，分配和改变介质的流动方向。

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