该二位四通和三位四通比例方向阀为直动式，底板安装:由比例电磁铁操作，比例电磁铁带中心螺纹，线圈可单独拆卸，电磁铁的控制可通过外置式电控器 (4WRA型) 或集成式电控器(4WRAE型) 实现。结构:
该阀由下列部分组成:-带安装底面的壳体(1)
-带对中弹黃(3和4)的控制阿芯(2)-带中心螺纹的电磁铁(5和6)-可选带集成式放大板(7)
R900947417 4WRA6WA30-22/G24N9K4/V-589
R900947693 4WRA6EB30-22/G24K4/V
R900947835 4WRA6E1-30-22/G24K4/V
R900949337 4WRA6W07-22/G24N9K4/V-589
R900949757 4WRAE10W1-60-22/G24N9K31/F1V
R900949993 4WRA10E30-22/G24N9K4/V-589
R900950144 4WRAE6W07-22/G24N9K31/F1V
R900950774 4WRAE6W1-15-22/G24N9K31/F1V
R900953093 4WRA6W30-22/G24K4/V-589
R900953168 4WRAE6E03-22/G24N9K31/A1V
R900953496 4WRAE10W1-30-22/G24K31/A1V
R900954053 4WRA6E1-15-22/G24K4/V
R900954054 4WRA6EA15-22/G24K4/V
R900954055 4WRA6EA30-22/G24K4/V
R900954056 4WRA6W15-22/G24K4/V
R900954057 4WRA6W1-15-22/G24K4/V
R900954058 4WRA6W1-30-22/G24K4/V
R900954059 4WRA6WA15-22/G24K4/V
R900954061 4WRA10E60-22/G24K4/V
R900954064 4WRA10EA60-22/G24K4/V
R900954065 4WRA10W60-22/G24K4/V