DBW20B3-5X/315YU6EW110N9K4V
DBW20B3-5X/315YU6EW110N9K4V
DBW20B3-5X/315YU6EW110N9K4V
DBW20B3-5X/315YU6EW110N9K4V
（1）机动换向阀，机动换向阀又称行程阀。
（2）电磁换向阀，电磁换向阀是利用电磁吸引力操纵阀芯换位的方向控制阀。
（3）电液换向阀，电液换向阀是由电磁换向阀和液动换向阀组成的复合阀。
（4）手动换向阀，手动换向阀是用手推杠杆操纵阀芯换位的方向控制阀
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