名義值越接近實際的流量或壓力越好，如果沒有與之相對應的范圍，那就選擇名義流量值略大于實際值的那一檔，因為這樣會很好的應用閥中全部機械行程和電氣參數的整個控制范圍，從而實現最高的分辨率。這一點和常規閥的選型原則（規格越大越好）完全相反，因此比例閥的選型過程要改變過去的傳統思維武漢耀泰機電設備有限公司
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電磁比例換向閥 4WRA(E)...22...系列
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R900346622 4WRA6EA20-10/24NK4/M
R900380090 4WRA6W10-10/24NK4/M
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R900558356 4WRAE10E60-22/G24N9K31/A1V
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R900581366 4WRAP6W7-04-22/24K4/M
R900710082 4WRA6W10-10/24N9K4/M
R900710530 4WRAE10W60-22/G24K31/F1V
R900736894 4WRAE6W03-22/G24N9K31/A1V
R900750718 4WRAE6EA15-22/G24N9K31/A1V
R900762072 4WRAE6W30-22/G24K31/F1V
R900784024 4WRA6W1-15-22/G24N9K4/V-589
R900787374 4WRA6WA07-22/G24N9K4/V-589
R900900987 4WRAE6W30-22/G24N9K31/A1V
R900900988 4WRAE10W60-22/G24N9K31/A1V
R900902095 4WRA6W30-22/G24N9K4/V
R900902097 4WRA10E60-22/G24N9K4/V
R900902537 4WRA6W1-30-22/G24N9K4/V
R900902940 4WRA6E30-22/G24N9K4/V
R900904010 4WRAE10E30-22/G24N9K31/F1V
R900904105 4WRA6E07-22/G24N9K4/V-589
R900904438 4WRA6E15-22/G24K4/V
R900904439 4WRA6E30-22/G24K4/V
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R900908299 4WRA10W1-30-22/G24N9K4/V
R900908938 4WRAE6W15-22/G24N9K31/A1V
R900908978 4WRA10E1-60-22/G24N9K4/V
R900909389 4WRAE6E15-22/G24N9K31/A1V
R900909658 4WRAE10E1-60-22/G24N9K31/A1V
R900910780 4WRA6E07-22/G24K4/V
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R900917193 4WRA10EA60-22/G24N9K4/V
R900917702 4WRA6W20-10/24N9K4/M
R900920055 4WRAE10W60-22/G24N9K31/F1V
R900920557 4WRA6E15-22/G24N9K4/V
R900920588 4WRAE10E30-22/G24N9K31/A1V
R900921245 4WRA6E30-22/G24N9K4/V-589
R900921739 4WRA10E30-22/G24N9K4/V
R900922441 4WRA10W30-22/G24N9K4/V
R900923472 4WRA6W07-22/G24N9K4/V
R900924377 4WRA6EB30-22/G24N9K4/V
R900925006 4WRAE6E07-22/G24N9K31/A1V
R900925456 4WRAE6E07-22/G24N9K31/F1V
