When the hydraulic system up to the tip is set higher than the pressure relief valve, the relief valve on top of the ball was opened by the oil relief valve to the tank platoon.

当系统中的油压升高到梢高于溢流阀的调定压力时，溢流阀上的钢球被顶开，油液经溢流阀排回油箱。

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When the hydraulic system up to the tip is set higher than the pressure relief valve, the relief valve on top of the ball was opened by the oil relief valve to the tank platoon.

当系统中的油压升高到梢高于溢流阀的调定压力时，溢流阀上的钢球被顶开，油液经溢流阀排回油箱。

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