主要分类
1、电磁阀从原理上分为三大类：
直动式电磁阀
原理：通电时，电磁线圈产生电磁力把关闭件从阀座上提起，阀门打开；断电时，电磁力消失，弹簧把关闭件压在阀座上，阀门关闭。
特点：在真空、负压、零压时能正常工作，但通径一般不超过25mm。
分步直动式电磁阀
原理：它是一种直动和先导式相结合的原理，当入口与出口没有压差时，通电后，电磁力直接把先导小阀和主阀关闭件依次向上提起，阀门打开。当入口与出口达到启动压差时，通电后，电磁力先导小阀，主阀下腔压力上升，上腔压力下降，从而利用压差把主阀向上推开；断电时，先导阀利用弹簧力或介质压力推动关闭件，向下移动，使阀门关闭。
特点：在零压差或真空、高压时亦能可*动作，但功率较大，要求必须水平安装。
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E-0670WDHE-0671WDHE-0672WDHE-0673WDHE-0674WDHE-0675WDHE-0676WDHE-0677WDHE-0678WDHE-06719WDHE-06739WDHE-06758WDHE-06791WD
HE-06793/AWDHE-0710WDHEDCWDHEACWDHE-0712WDHEACWDHEDCWDHE-0714WDHE-0715WDHE-0716WDHE-07
17WDHE-0718WDHE-07119WDHE-07139/AWDHE-07158WDHE-07191WDHE-07193WDHE-0750WDHE-0751/AWDHE-0752WDHE-0753WDHE-0754WDHE-0755W
DHE-0756WDHE-0717/AWDHE-0758WDHE-07519WDHE-07539WDHE-07558WDHE-07591WDHE-07593WATO WDKE型10通径电磁方向控制阀WDKE-1610WD
KE-1611WDKE-1612WDKE-1613WDKE-1614WDKE-1615WDKE-1616WDKE-1717WDKE-1618/AWDKE-16119WDKE-16139WDKE-16158WDKE-16191WDKE-161
93/AWDKE-1630WDKE-1631/2A-220ACWDKEA/24DCWDKE-1632WDKE-1633WDKE-1634WDKE-1635/AWDKE-1636WDKE-1717WDKE-1638WDKE-1
6319WDKE-16339WDKE-16358WDKE-16391WDKE-16393WDKE-1670WDKE-1671WDKE-1672WDKE-1673WDKE-1674WDKE-1675WDKE-1676WDKE-1677WDKE
-1678WDKE-16719WDKE-16739WDKE-16758WDKE-16791WDKE-16793/AWDKE-1710WDKEDCWDKEACWDKE-1712WDKEACW
DKEDCWDKE-1714WDKE-1715WDKE-1716WDKE-1717WDKE-1718WDKE-17119WDKE-17139/AWDKE-17158WDKE-17191WDKE-17193WDKE-1750W
DKE-1751/AWDKE-1752WDKE-1753WDKE-1754WDKE-1755WDKE-1756WDKE-1717/AWDKE-1758WDKE-17519WDKE-17539WDKE-17558WDKE-17591WDKE-
17593WATO WDPHE型先导式样电液换向阀WDPHE-2610WDPHE-2611WDPHE-2612WDPHE-2613WDPHE-2614WDPHE-2615WDPHE-2616WDPHE-2717WDPHE
-26119WDPHE-26139WDPHE-26158WDPHE-26191WDPHE-26193/AWDPHE-2630WDPHE-2631/2A-220ACWDPHEA/24DCWDPHE-2632WDPHE-2633
WDPHE-2634WDPHE-2635/AWDPHE-2636WDPHE-2717WDPHE-26319WDPHE-26339WDPHE-26358WDPHE-26391WDPHE-26393WDPHE-2670WDPHE-2671WDP
HE-2672WDPHE-2673WDPHE-2674WDPHE-2675WDPHE-2676WDPHE-2677WDPHE-26719WDPHE-26739WDPHE-26758WDPHE-26791WDPHE-26793/AWDPHE-
2710WDPHEDCWDPHEACWDPHE-2712WDPHEACWDPHEDCWDPHE-2714WDPHE-2715WDPHE-2716WDPHE-2717WDPH
E-27119WDPHE-27139/AWDPHE-27158WDPHE-27191WDPHE-27193WDPHE-2750WDPHE-2751/AWDPHE-2752WDPHE-2753WDPHE-2754WDPHE-2755WDPHE
-2756WDPHE-2717/AWDPHE-2758WDPHE-27519WDPHE-27539WDPHE-27558WDPHE-27591WDPHE-27593WDPHE-3610WDPHE-3611WDPHE-3612WDPHE-36
13WDPHE-3614WDPHE-3615WDPHE-3616WDPHE-3717WDPHE-36119WDPHE-36139WDPHE-36158WDPHE-36191WDPHE-36193/AWDPHE-3630WDPHE-3631/
2A-220ACWDPHEA/24DCWDPHE-3632WDPHE-3633WDPHE-3634WDPHE-3635/AWDPHE-3636WDPHE-3717WDPHE-36319WDPHE-36339WDPHE-363
58WDPHE-36391WDPHE-36393WDPHE-3670WDPHE-3671WDPHE-3672WDPHE-3673WDPHE-3674WDPHE-3675WDPHE-3676WDPHE-3677WDPHE-36719WDPHE
-36739WDPHE-36758WDPHE-36791WDPHE-36793/AWDPHE-3710WDPHEDCWDPHEACWDPHE-3712WDPHEACWDPHE-3713-2
4DCWDPHE-3714WDPHE-3715WDPHE-3716WDPHE-3717WDPHE-37119WDPHE-37139/AWDPHE-37158WDPHE-37191WDPHE-37193WDPHE-3750WDPHE-3751
/AWDPHE-3752WDPHE-3753WDPHE-3754WDPHE-3755WDPHE-3756WDPHE-3717/AWDPHE-3758WDPHE-37519WDPHE-37539WDPHE-37558WDPHE-37591WD
PHE-37593WATO NHE型片式换向阀NHE-0611NHE-0611ANHE-0631/2NHEANHE-0613NHE-0613/ANHE-0711NHE-0713NHE-0611/MVNHE-061
1/AMWNHEMVNHE-0631/AMVNHE-0613/MVNHE-0613/AMVNHE-0711/MVNHE-0713/MVWATO WDP型16通径和25通径液控方向阀WDP-240WDP-
340WDP-250WDP-350WDP-241WDP-341WDP-251WDP-351WDP-243WDP-343WDP-253WDP-353WDP-247WDP-347WDP-257WDP-357WDP-2401/2WDP-2410/
HWDP-3533/SWATO WMAP型压力继电器WMAP-40WMAP-80WMAP-160WMAP-210WMAP-320WMAP-40/06WMAP-80/06WMAP-160/06WMAP-210/06WMAP-320
/06WMAP-40/10WMAP-80/10WMAP-160/10WMAP-210/10WMAP-320/10
