When the hydraulic system up to the tip is set higher than the pressure reliefvalve, the reliefvalve on top of the ball was opened by the oil reliefvalve 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。
2
A pressure reliefvalve is also provided at the top of the chamber to allow the vapor to escape when a predetermined internal pressure is reached.