如果阀口压力损失很小，t口压力又为零，那么p口的压力就不足以供给前置级阀来推动主阀芯，整个伺服阀就失效了。所以伺服阀的阀口做得偏小，即使在阀口全开的情况下，也要有一定的压力损失，来维持前置级阀的正常工作。
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R5VA1
R5VA5SCG551A018MS，EF8210G094，WSNF8327B102，SCG551A002MS，EF8320G203，SCG531D001MS，WSNF8551A421，ASCO阿斯卡 8320G10，EF8344G70，ASCO阿斯卡SCG238C017，HT8320G13，EF8316G4，8342G003，EF8316G54，EF8551A017MS，EF8210G004，HT8344GG15， ASCO阿斯卡HT8316GGGGGGGG202，SC8551A017MS，8223GG071，EF8210G056，EF8210G095，EF8327G2，EF8210G089，EF8320G200，EF8210G088，ASCO阿斯卡NFG551B402MS，EF8210GC93，EF8342G20，EFHC8321G2，HB8320GGGG82R，8210GG24，EFHC8320G1，8320G13，HB8320GG95，EF8320G3，8344G44，美国ASCO电磁阀%阿斯卡8320系列电磁阀EF8210G22，JBEF8210GG24MO，8262G148，EF8320GG206，EFEF8308BG52，EFHC8210G11，EFHC8210G13，EFHC8210G3，8030GG1，8262G2，8316G384，ASCO阿斯卡8316G384V，EF8320GG3，8210G9，EF8210G1，EF8210G2，EF8210GG174MO,8320G184MO,8320G186MO,EF8551A001MS,SCG353A044，SCG353A047，SCG353A051,SCGSCG53LB001M
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MR250D-P2N1F1C1N
MR600F-P1N1N1C1N
MR250D-P1N1N1C1N0001
MR2400I-F2N1N1S3NXC
MR1800H-F1T1N1N1N
MR1600H-F1N1N1S1NX
MR1800H-P1N1V1N1N
MR1800H-F1N1N1C1N
MR500F-F1N1N1S1NX
MRA2400H-F2N1N1N1NX
MR1600H-F1N1N1N1N
MRA2400H-F2N1N1S4NX
MRE2100H-F1N1N1S1NX
MR1600H-F1N1N1S1NX
MR190C-D1N1U1C1NX
MR1800H-F2N1N1N1NXC
MR1600H-F2N1N1S4NXC
MRD1100G744F2N1N1S2NX
MRD981G781F2N1N1S1NX
MR2400I-D1N1N1S1NX
MR2800I-F1N1N1N3NX
MRE3100I-F1N1N1N3NX
MRDE1400G1082F1N1N1C1NX
MR2400I-F1N1N1S3NXD
MRD1100G817F1N1N1C1NXG0Q A1
R5VW30 A1
R5VG0Q A1
R5VW02 A1
R5VW30 A1
R5VW31 A1
R5VG0Q A1
R5VG0Q A1
R5VA1
R5VA1
R5VA5
R5VA1
R5VA1
R5VW01 A1
R5VL A1
R5VW30 A1
R5VG0R A1
R5VG0Q A1
R5VG0R A1
R5VG0Q A1
R5VP2G0R A1
R5VG0Q A1
R5VG0Q A1
R5VG0Q A1
R5VA5