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。
The pressure relief valve can be mounted on an oil tank cover or a lateral wall of the transformer for protection in case of pressure of the oil tank in excess of the rated valve.
它安装在变压器的油箱箱盖或侧壁上，当油箱内压力超过规定值时，对变压器起保护作用。
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