电液比例控制阀（简称比例阀）实质上是一种廉价的、抗污染性能较好的电液控制阀。比例阀的发展经历两条途径，一是用比例电磁铁取代传统液压阀的手动调节输入机构，在传统液压阀的基础下：发展起来的各种比例方向、压力和流量阀；二是一些原电液伺服阀生产厂家在电液伺服阀的基础上，降低设计制造精度后发展起来的R9009540884WRAE10W60-22/G24K31/A1VR9009541094WRAE10EA30-22/G24N9K31/F1VR9009544034WRA6E15-22/G24K4/V-589R9009544074WRA6W30-22/G24K4/VR9009604064WRA10EA30-22/G24N9K4/V-589R9009615334WRA6WA15-22/G24N9K4/VR9009624074WRAE6WA30-22/G24N9K31/A1VR9009632964WRA6WA15-22/G24N9K4/V-589R9009633454WRA6EB07-22/G24N9K4/VR9009648344WRA6EA03-22/G24N9K4/VR9009656744WRAE10E60-22/G24K31/F1VR9009661334WRAE6EA07-22/G24N9K31/A1VR9009679754WRA6EA03-22/G24N9K4/V-589R9009696654WRAE6EB30-22/G24N9K31/A1VR9009726604WRAP6W7-07-33=G24K4/V=00R9009728274WRA6W1-07-22/G24K4/VR9009748174WRAE6W1-30-22/G24K31/F1VR9009764954WRA6W15-22/G24K4/V-589)