1) closed center pilot control valve
中位关闭先导控制阀
2) closed center pilot valve
中位关闭先导阀
3) pilot center valve
先导中位阀
4) pilot control valve
先导控制阀
5) pilot valve plunger control position
先导阀柱塞控制位置
6) limit/shutdown pilot valve
限位/关断先导阀
参考词条