比例电磁铁是直流电磁铁，但它与普通直流电磁铁不同。普通直流电磁铁的衔铁只有吸合和断开两个工作位置，并且在吸合时磁路中几乎没有气隙.而比例电磁铁要求吸合力或位移与给定电流成比例。并在衔铁的全部工作行程上，磁路中保持一定的气隙‘.其结构主要由极靴1、线圈2、壳体5和衔铁10等组成。线圈2中通电后产生磁场，因隔磁环4的存在。使磁力线主要部分通过衔铁10、气隙和极靴1，形成回路口极靴对衔铁产生吸力门在线圈中电流一定时。吸力的大小因极靴1与衔铁间的距离不同而变化。
型号 3DREP 和 3DREPE
比例减压阀，直动式
R900700593 3DREPE6C-2X/16EG24N9K31/A1V
R900576424 3DREP6C-1X/25A24N2JK10M
R900573750 3DREP6C-1X/25A24N9K4V
R900551330 3DREP6C-1X/25A24NK4V
R900550096 3DREP6C-1X/16A24N9K4M
R900547100 3DREP6C-1X/25A24N9K4M
R900498677 3DREP6A-1X/25A24NJM
R900498673 3DREP6C-1X/25A24NJM
R900498672 3DREP6C-1X/25A24JM
R900498485 3DREP6C-1X/25A12NK4M
R900494199 3DREP6A-1X/45A24NK4M
R900494195 3DREP6B-1X/45A24NK4M
R900494193 3DREP6B-1X/45A24K4M
R900494191 3DREP6C-1X/45A24NK4M
R900494190 3DREP6C-1X/45A24NK4V
R900494189 3DREP6C-1X/45A24K4M
R900494175 3DREP6A-1X/25A24NK4M
R900494171 3DREP6B-1X/25A24NK4M
R900494167 3DREP6C-1X/25A24NK4M
R900494165 3DREP6C-1X/25A24K4M
R900494163 3DREP6A-1X/16A24NK4M
R900494155 3DREP6C-1X/16A24NK4M
R900494153 3DREP6C-1X/16A24K4M
R900484840 3DREP6C-1X/16A24NJM
R900451448 3DREP6A-1X/45A24N9K4M
R961000391 DICHTUNGSSATZ3DREP6.-2X/V
R961000390 DICHTUNGSSATZ3DREP6.-2X/M
R961000388 DICHTUNGSSATZ3DREP6.-1X/V
R961000330 DICHTUNGSSATZ3DREP6.-1X/M
R901094369 3DREPE6C-2X/45EG24K31/A1V
R901089114 3DREP6B-2X/16EG24N9K4/M
R901087988 3DREP6A-2X/16EG24N9K4/M-596
R901077122 3DREP6B-2X/45EG24NJK31/M
R901076954 3DREPE6B-2X/25EG24N9K31/F1M
R901060431 3DREPE6B-2X/45EG24K31/A1M
R901052777 3DREP6A-2X/45EG24XEJ/V
R901051881 3DREPE6A-2X/45EG24N9K31/A1M
R901033013 3DREPE6A-2X/25EG24N9K31/F1M
R901025350 3DREP6C-2X/25EG24XEJ/V
R901025332 3DREP6A-2X/25EG24XEJ/V
R901025268 3DREP6C-2X/45EG24XEJ/V
R901017699 BETRIEBSANLEITUNG3DREP6-2X/XE-EU
R901016018 3DREPE6B-2X/45EG24N9K31/A1M
R901015676 3DREPE6C-2X/16EG24N9K31/A1M
R901012117 3DREPE6C-2X/45EG24N9K31/F1M
R901010399 3DREPE6A-2X/25EG24N9K31/A1M
R901007642 STIFT3DREP6-N
R900978110 3DREPE6A-2X/45EG24N9K31/F1M
R900975912 3DREPE6A-2X/25EG24N9K31/F1V
R900974956 3DREP6C-2X/25EG24JK31/M
R900974816 3DREP6A-2X/16EG24N9K4/M
R900973913 3DREPE6C-2X/25EG24K31/F1M
R900970698 3DREPE6C-2X/45EG24N9K31/F1V
R900967550 3DREP6A-1X/25A24NK4M-596
R900967209 3DREP6A-2X/16EG24N9K4/V
R900967164 3DREPE6A-2X/25EG24K31/A1V
R900964865 3DREP6B-2X/25EG24K4/M
R900963713 3DREPE6C-2X/45EG24N9K31/A1V
R900962045 3DREP6A-2X/45EG24N9K4/M
R900961820 3DREP6C-2X/25EG24NJK31/V
R900960161 3DREP6B-1X/45A24N9K4M
R900959741 3DREP6C-1X/45A24N9K4M
R900959338 3DREPE6B-2X/25EG24K31/F1M
R900959251 3DREP6C-2X/25EG24NJK31/M
R900959129 3DREP6A-2X/45EG24N9K4/V
R900958848 3DREPE6C-2X/25EG24N9K31/F1M
R900958136 3DREP6C-1X/25A24NK4M-232
R900956636 3DREP6B-2X/25EG24N9K4/M
R900956182 3DREPE6B-2X/25EG24K31/A1M
R900956100 3DREP6C-2X/16EG24N9K4/M
R900955887 3DREP6C-2X/25EG24N9K4/M
R900955862 3DREPE6B-2X/25EG24N9K31/A1M
R900955853 3DREPE6C-2X/25EG24K31/F1V
R900955803 3DREP6A-2X/25EG24N9K4/M
比例阀和伺服阀的区别主要体现在以下几点：
1.驱动装置不同。比例阀的驱动装置是比例电磁铁；伺服阀的驱动装置是力马达或力矩马达；
2.性能参数不同。滞环、中位死区、频宽、过滤精度等特性不同，因此应用场合不同，伺服阀和伺服比例阀主要应用在闭环控制系统，其它结构的比例阀主要应用在开环控系统及闭环速度控制系统；
2.1 伺服阀中位没有死区，比例阀有中位死区；
2.2 伺服阀的频响（响应频率）更高，可以高达200Hz左右，比例阀一般最高几十Hz；
2.3 伺服阀对液压油液的要求更高，需要经过滤才行，否则容易堵塞，比例阀要求低一些；
3.阀芯结构及加工精度不同。比例阀采用阀芯+阀体结构，阀体兼作阀套。伺服阀和伺服比例阀采用阀芯+阀套的结构。
4.中位机能种类不同。比例换向阀具有与普通换向阀相似的中位机能，而伺服阀中位机能只有O型（Rexroth产品的E型）。
5.阀的额定压降不同。
