電磁換向閥在液壓系統(tǒng)中的作用是用來實現液壓油路的換向、順序動作及卸荷等。由于電磁鐵的推力有限，電磁換向閥應用在流量不大的液壓系統(tǒng)中。

(1)結構原理
電磁換向閥是液壓控制系統(tǒng)和電氣控制系統(tǒng)之轉換元件。它由液壓機械中的按鈕開關、限位開關、行程開關、壓力繼電器等電氣元件發(fā)出信號，使電磁鐵通電吸合或斷電釋放，從而直接控制閥芯移位，來實現油流的溝通、切斷和方向變換，來操縱各執(zhí)行機構的動作。推動故障檢查按鈕可使滑閥閥芯手推移動。
DS3-S/10V-D12K/CM
DS3-S4/11N-D24K1迪普馬電磁閥

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德國HAWE哈威電磁閥平衡閥DL41-3G-B/E2-2-130  
DL21-2G-B/F2-3-70 


哈威型號
Z12.3 
WV12-S WNIF 2 WNID-G24 WN 1D-G24-1/4 DC24V
WH3N-X24 WH1N -X24  WGZ3-1R WG230
WGS2-OR-WG230 WGS2-0-WG230 WG21-1
VZP1-G22-X24 VR 25 18 E  VDM4PHR
VDM 3 GNR-80  VB 11 FM-LN-2-G 98
V30D-250RDN-2-1-05/LN400-M+SAB-A+BMLPD/B Z208
V30D-250 RDN-2-1-05/N V30D-250 RDN-2-1-05/N
V30D-115 RDN-1-1-02/N-2 V30D-045RDN-1-1-02/N
TQ5P-A6.8 TQ5P-A6 TQ4P-A5 TQ43-A4 TQ3P-A2.3
TQ3P-A1.6 TQ33-A3  TQ32-A2.3 SWPN8-B-X 24 SWPN2-W-X24 SWPN2-W-G24
SWPN2-G-X24 SWPN2-G-G24 SWPN-2-D-G24 SWPN 2-W-G24
SWPN 2-G-G24 SWPN 2-B-G24 SWPN 2-B-G24
SQ17H12 SHE 3-4/90 FP-G 24 
SHE 3-4/90 F-G 24 SGOW-GG5H-6E-CD140
SG5H-3E-CK140 SG2W-NUH 3930 SEH2-3/50 F-P-G24 
SE3-3/30-G24 RZ4.2/2-37 
徑向柱塞泵系列
RK2 RK1G RK1(G1/4A)
RK1 RHCE23  RHCE 6 V  RHC13 RHC 13 RH3V
RH3 RH 1

德國HAWE哈威電磁閥 哈威平衡閥 哈威型號 Z12.3 WV12-S WNIF 2 WNID-G24 WN 1D-G24-1/4 DC24V WH3N-X24 WH1N -X24 WGZ3-1R WG230 WGS2-OR-WG230 WGS2-0-WG230 WG21-1 VZP1-G22-X24 VR 25 18 E VDM4PHR VDM 3 GNR-80 VB 11 FM-LN-2-G 98 V30D-250RDN-2-1-05/LN400-M+SAB-A+BMLPD/B Z208 V30D-250 RDN-2-1-05/N V30D-250 RDN-2-1-05/N V30D-115 RDN-1-1-02/N-2 V30D-045RDN-1-1-02/N TQ5P-A6.8 TQ5P-A6 TQ4P-A5 TQ43-A4 TQ3P-A2。3 TQ3P-A1。6 TQ33-A3 TQ32-A2.3 SWPN8-B-X 24 SWPN2-W-X24 SWPN2-W-G24 SWPN2-G-X24 SWPN2-G-G24 SWPN-2-D-G24 SWPN 2-W-G24 SWPN 2-G-G24 SWPN 2-B-G24 SWPN 2-B-G24 SQ17H12 SHE 3-4/90 FP-G 24 SHE 3-4/90 F-G 24 SGOW-GG5H-6E-CD140 SG5H-3E-CK140 SG2W-NUH 3930 SEH2-3/50 F-P-G24 SE3-3/30-G24 RZ4.2/2-37 徑向柱塞泵系列 RK2 RK1G RK1(G1/4A) RK1 RHCE23 RHCE 6 V RHC13 RHC 13 RH3V RH3 RH 1