1) oil differential relief valve
油压差动安全阀
2) pressure-differential tubing safety valve
压差式油管安全阀
4) vibration pump charge relief valve
振动泵充油安全[泄压]阀
5) oil release valve
油压调节阀，油压安全阀
6) cylinder pressure relief valve
油缸压力安全阀
参考词条