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R9009675644WREE6W04-22/G24K31/F1VR9009682604WRE6W08-10/24K4/VR9009693214WREE10W3-75-22/G24K31/A1VR9009693514WRE10EA75-22/G24K4/VR9009700894WREE10E1-75-22/G24K31/F1VR9009714204WREE10EA50-22/G24K31/F1VR9009724244WREE10E3-75-22/G24K31/A1VR9009732894WREE6EA16-22/G24K31/F1VR9009734824WREE6WA08-22/G24K31/A1VR9009741524WRE10W1-25-22/G24K4/VR9009761194WREE10W1-75-22/G24K31/F1VR9009763304WREE10EA75-22/G24K31/F1VR9009763314WREE6V04-22/G24K31/F1VR9009768114WREE6E1-08-22/G24K31/F1VR9009781684WREE6E04-22/G24K31/F1VR9009791394WRE10V64-10/24K4/VR9010221784WRE6WA08-22/G24K4/VR9010365564WRE6V16-22/G24K4/V-822R9010374244WREE10R75-22/G24K31/A1V)