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所以使用比例阀或伺服阀的目的就是:以电控方式实现对流量的节流控制(当然经过结构上的改动也可实现压力控制等),既然是节流控制,就必然有能量损失,伺服阀和其它阀不同的是,它的能量损失更大 些,因为它需要 定的流量来维持前置 控制油路的工作。DGAM 2 3 10 R
DGAM 2 4 10 R
DGAM 3 01 10
DGAM 3 01 10R
DGAM 5 10R
DGC 06 B 60
DGC 06 C 60
DGC 06 F 60
DGC 06 FV 60
DGFN 06 50
DGMA 2 B 10
DGMA 2 C1 10
DGMA 2 C2 10
DGMA 2 T1 10 R
DGMA 2 T2 10 R
DGMA 3 0 10
DGMA 3 B 10
DGMA 3 C1 10
DGMA 3 C1 10 GE2
DGMA 3 C2 10
DGMA 3 F1 10
DGMA 3 F3 10
DGMA 3 F4 10
DGMA 3 T1 10 B
DGMA 3 T2 10 B
DGMA 5 B 10
DGMA 5 C1 10
DGMA 5 C2 10
DGMA 5 T1 10B
DGMA 5 T2 10B
DGMA 5 T3 10B
DGMC 2 AB BW 10
DGMC 2 AT BW 10
DGMC 2 AT CW 10
DGMC 2 AT FW 10
DGMC 2 BT GW 10
DGMC 2 PT BW 10
DGMC 2 PT CH 10
DGMC 2 PT FW 10
DGMC 2 PT GW 10
DGMC 3 AB AW 41
DGMC 3 AB BW 41
DGMC 3 AB CW 41
DGMC 3 AB GW 41
DGMC 3 AT AW 41
DGMC 3 AT AW B 41
DGMC 3 AT BH 41
DGMC 3 AT BW 41
DGMC 3 AT BW B 41
DGMC 3 AT CH 41
DGMC 3 AT CW 41
DGMC 3 AT CW B 41
DGMC 3 AT GH 41
DGMC 3 AT GK B 41
DGMC 3 AT GW 41
DGMC 3 AT GW B 41
DGMC 3 BA AW 41
DGMC 3 BA BW 41
DGMC 3 BA CK 41
DGMC 3 BA CW 41
DGMC 3 BA GW 41
DGMC 3 BT AW 41
DGMC 3 BT BW 41
DGMC 3 BT CK 41
DGMC 3 BT CW 41
DGMC 3 BT GW 41
DGMC 3 PT AH 41
DGMC 3 PT AK B 41
DGMC 3 PT CW 41
DGMC 3 PT AW B 41
DGMC 3 PT BH 41
DGMC 3 PT BK B 41
DGMC 3 PT FW 41 EN2
DGMC 3 PT BW B 41
DGMC 3 PT BW S 41
DGMC 3 PT CH 41
DGMC 3 PT CH B 41
DGMC 3 PT CK 41
DGMC 3 PT CW 41
DGMC 3 PT CW B 41
DGMC 3 PT GH 41
DGMC 3 PT GH B 41
DGMC 3 PT GK 41
DGMC 3 PT GK B 41
DGMC 3 PT GW 41
DGMC 3 PT GW B 41
DGMC 3 PT GW S 41
DGMC 5 AB GW 30
DGMC 5 AT AW B 30
DGMC 5 AT BH B 30
DGMC 5 AT BW B 30
DGMC 5 AT FW B 30
DGMC 5 AT GH B 30
DGMC 5 AT GW B 30
DGMC 5 BA GH 30
DGMC 5 BT AW B 30
DGMC 5 BT BW B 30
DGMC 5 BT FW B 30
DGMC 5 BT GH B 30
DGMC 5 BT GW B 30
伺服阀的主阀 般来说和换向阀 样是滑阀结构,只不过阀芯的换向不是靠电磁铁来推动,而是靠前置 阀输出的液压力来推动,这 点和电液换向阀比较相似,只不过电液换向阀的前置 阀是电磁换向阀,而伺服阀的前置 阀是动态特性比较好的喷嘴挡板阀或射流管阀。 R900332764 H-4WHE7X/
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R900413674 H-4WH25E6X/
R900441150 4WH10D4X/
R900479622 4WH6D5X/OF
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R901116609 4WH6Y5X//B10.
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H-4WEH16U1X/6ZG24N9ETK4/B08Z
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4WEH16J7X/6EW110N9ES2K4/B10
4WEH16Y7X/6EG24N9ETK4/B10
4WEH16EB7X/6EG24N9ETK4/B10
4WEH10J4X/6EG24N9K4
4WEH16E7X/6EG24N9K4/B10
4WEH22D7X/6SG24N9ETK4/B10
4WEH16J7X/6EG24NES2K4/B10V
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4WEH16D7X/6SG24N9ETK4/B10
4WEH16HD7X/OF6EG24N9K4/B10
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4WEH16E7X/6EG24K4QM0G24/N05SO746
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4WEH16L7X/6EG24N9ETK4/B08
4WEH10J4X/6EG24N9TK4/B10
4WEH10J4X/6EG24N9ETK4/B06
4WEH16J7X/6EG24N9ETS2K4/B10V
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4WEH16E7X/6EG24N9ES2K4/B10
4WEH22J7X/6EW230N9K4/B10D3
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H-4WEH22Y7X/6EG24N9ES2K4/B10D3
4WEH16HD7X/OF6EW230N9ETK4/B10V
4WEH22R7X/6EG24N9ETS2K4
4WEH16U7X/6EG24N9ETK4/B10
4WEH22J7X/6EG24N9ES2K4/B10V
4WEH10G4X/6EG24N9ETK4/B10
4WEH16D7X/6EW110N9TS2K4
4WEH16J7X/6EG24N9EK4/B08P4,5
4WEH16HD7X/OF6EG24N9EK4/B08P4,5
4WEH22HD7X/OF6EG24N9EK4/B08P4,5
4WEH22Q7X/6EG24N9K4
4WEH16HD7X/O6EG24N9K4
H-4WEH25E6X/6EW110N9SK4/B10D2
4WEH22M7X/6EG24N9ETK4/B10D3
4WEH32E6X/6EG24N9EK4/10B10
4WEH16HD7X/OF6EW230N9ES2K4/B10
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H-4WEH32J6X/6EG24N9ES2K4/B10D3
H-4WEH25J6X/6EG24N9ES2K4/B10D3
4WEH16G7X/6EG24N9ETK4/B10
4WEH22HD7X/OF6EG24N9ETS2DJL1/B10
H-4WEH32J6X/6EG24N9ETS2DJL1/B10D3
H-4WEH32HD6X/OF6EG24N9ETS2DJL1/B10D3
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4WEH32L6X/6SG24N9ETK4/B10
4WEH16U7X/6SG24N9EK4/B10
H-4WEH25U6X/6EG110N9ES2K4/B10D3
H-4WEH25Y6X/6EG24N9ES2K4/B10D3
4WEH16Y7X/6SG24N9ETK4/B10
4WEH16D7X/6EG24N9ETS2K4/B10
4WEH16LB7X/6SG24N9ETK4/B10
4WEH32J6X/6EG24N9EK4/B10
4WEH32E6X/6SG24N9K4
4WEH32HD6X/OF6EG24N9ES2K4/B10V
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H-4WEH22J7X/6EG24N9K4
4WEH22E7X/6EG24N9ETS2K4
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4WEH22J7X/6EG24N9ES2K4
H-4WEH25J6X/6EG24N9ETK4
4WEH22J7X/6EG24N9K4
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4WEH22J7X/6EG24N9ETK4/B08
4WEH10J4X/6EW230N9ETK4
4WEH22D7X/6EG24N9ETK4
4WEH22E7X/6EG24N9ETK4
4WEH32EA6X/6EG24N9ETK4
4WEH22HD7X/OF6EG24N9EK4
4WEH22J7X/6EW230N9ETK4
4WEH10J4X/6EG24N9ETS2K4/B10
4WEH16D7X/6EG24N9ETK4
4WEH16E7X/6EG24N9ETK4
4WEH16J7X/6EG24N9ETK4
4WEH10M4X/6EG48N9K4
4WEH10J4X/6EG24N9ETS2K4/B10D3
4WEH16E7X/6EG24N9K4
4WEH16J7X/6EG24N9ES2K4
4WEH16HD7X/OF6EG24N9ETK4
4WEH16E7X/6EG24N9ES2K4
4WEH16E7X/6EG24N9ETK4/B10
4WEH16D7X/6EG24N9K4
4WEH16C7X/6EG24N9K4
H-4WEH25C6X/6EG24N9K4
4WEH16J7X/6EG24N9S2K4
H-4WEH16J7X/6EG24N9ETS2K4/B10D3
H-4WEH25D6X/6EG24N9ES2K4/B10D3
4WEH16D7X/6EG24N9K4/B08
4WEH16L7X/6EG24N9ETK4
4WEH16Q7X/6EG24N9K4
4WEH16J7X/6EW230N9ETK4/B08
4WEH16D7X/6EG24N9ETK4/B10
4WEH16HD7X/OF6EG24N9ETS2K4
4WEH16Q7X/6EG24N9ES2K4
4WEH22E7X/6EW230N9K4
4WEH16D7X/6EG24N9S2K4
4WEH16D7X/6EG24N9ES2K4
4WEH16U7X/6EG24N9ETK4
4WEH16J7X/6EG24N9K4
4WEH16D7X/6EG24N9EK4
4WEH16Y7X/6EG24N9ETK4
4WEH16J7X/6EG24N9S2K4/B08
4WEH16J7X/6EG24N9K4/V
4WEH10D4X/6EG24N9ETK4
4WEH16HD7X/OF6EG24N9K4
4WEH16J7X/6EG24N9ETK4/10
4WEH16J7X/6EG24N9ETK4/B10D3
4WEH16J7X/6EW110N9ES2K4
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4WEH22J7X/6EG24N9ETK4
4WEH32E6X/6EG24N9ETK4
4WEH16J7X/6EG24N9TK4
4WEH16Q7X/6EG24N9S2K4
4WEH16J7X/6EG24N9EK4
4WEH22G7X/6EG24N9K4
4WEH16J7X/6EG24N9ETK4/B08
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4WEH16D7X/6EG24N9ETK4/B08
4WEH32E6X/6EW230N9K4
4WEH22J7X/6EG24N9ETSK4/B10D3
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也就是说,伺服阀的主阀是靠前置 阀的输出压力来控制的,而前置 阀的压力则来自于伺服阀的入口p,假如p口的压力不足,前置 阀就不能输出足够的压力来推动主阀芯动作。 R900919402 4WE10L73-3X/CG24N9K4/A12
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R900918828 4WE10G3-3X/CW230N9K4
R900918663 4WE10Y3X/CG24N9K4QMAG24
R900918471 4WE10J73-3X/CG205N9K4/A12
R900918453 4WE10Y3X/CG24N9K4/B10
R900918393 4WE10H3X/CG24N2K4
R900918361 4WE10F3X/CW230N9K4
R900918231 4WE10UB3X/CG24N9K4
R900918149 5-4WE10102-3X/CG24K4QMAG24
R900918089 5-4WE10D3X/CG205N9K4/C
R900917675 4WE10J3X/CW230N9K4/V
R900917644 5-4WE1038-3X/CG24N9K4
R900917643 5-4WE10R6-3X/CG24N9K4
R900917642 5-4WE10L5-3X/CG24N9K4
R900917641 5-4WE10J10-3X/CG24N9K4
R900917640 5-4WE10G41-3X/CG24N9K4SO771
R900917639 5-4WE10E34-3X/CG24N9K4
R900917638 5-4WE10J2B3X/CG24N9K4SO771
R900917637 5-4WE10G41A3X/CG24N9K4SO771
R900917619 4WE10L28A3X/CG24K4QM0G24
R900917589 5-4WE10G3X/CG24N4K4/A08
R900917464 4WE10G3X/CG24N9K4/V
R900917462 4WE10JB3X/CG24NK4
R900917268 4WE1022-3X/CG24K4QMBG24
R900917097 5-4WE10G3X/CG24N9K4/A06
R900917038 4WE10D3X/CG205K4QMAG24
R900916902 4WE10UA3X/CW230N9K4
R900916745 5-4WE10J3X/CG96N9K4/C
R900916276 4WE10D73-3X/CG96N9K4/A12
R900916118 4WE10M3X/CW230N9K4
R900916071 4WE10JA3X/CG24N9K4/V
R900915768 4WE10E73-3X/CG205N9K4/A12
R900915746 4WE10C3X/CG24K4QMBG24
R900915729 4WE10Y3X/CG125N9K4
R900915670 4WE10Y3X/CW230N9K4
R900915669 4WE10L3X/CW230N9K4
R900915652 4WE10D3X/OFCW230N9K4
R900915651 4WE10C3X/CW230N9K4
R900915440 4WE10D3X/CG24N9K4QMAG24
R900915363 4WE10J3X/CG110N9K4
R900914913 4WE10HB3X/CG24N9K4
R900914839 4WE10D3X/CG24N9K4SO292
R900914434 4WE10Y3X/CG96N9K4
R900914337 4WE10C3X/CG125N9K4
R900914336 4WE10J3X/CG125N9K4
R900914176 5-4WE10X7-3X/CG24N9K4SO555
R900914175 5-4WE10C3X/CG24N9K4SO555
R900914099 4WE10D3X/CW110N9K4/V
R900914044 4WE10J73-3X/CG96N9K4/A12
R900913672 4WE10P3A3X/CG24N9K4QM0G24
R900913465 4WE10EA3X/CW230N9K4
R900913458 4WE10J2-3X/CW110N9K4
R900913248 4WE10EB3X/CG24N9K4QMBG24
R900912742 4WE10H73-3X/CG24N9K4/A12
R900912737 4WE10D3X/CG24K4QMBG24
R900912499 4WE10HA3X/CW230N9K4
R900912498 4WE10H3X/CW230K4
R900912497 4WE10G3X/CW230N9K4
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R900911868 4WE10J3X/CW230N9K4
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R900909277 4WE10X7-3X/CW110N9K4
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R900908773 4WE10J3X/CG24N4K4
R900908772 4WE10E3X/CG24N4K4
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R900908533 5-4WE10C3X/CG205NK4/C
R900908127 4WE10E3X/CG24N9K4/MH
R900908126 4WE10D3X/CG24N9K4/MH
R900908125 4WE10J3X/CG24N9K4/MH
R900908124 4WE10R3X/CG24N9K4/MH
R900907604 4WE10D3X/CG125N9K4/V
R900906475 4WE10JA3X/CW110N9K4
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R900906453 4WE10LB3X/CW110N9K4
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R900905640 4WE10J2B3X/CG24N9K4
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R900903813 5-4WE10D3X/OFCG220N9K4SO777
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R900902033 4WE10D3X/OFCG48N9K4
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R900786579 5-4WE10J3X/CG24N9K4QSABG24E
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R900784027 4WE10JB3X/CW230N9K4QM0G24
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R900782494 4WE10D3X/CW48N9K4
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R900779611 5-4WE10D3X/CG125N9K4QSABG24S
R900778995 5-4WE10E3X/CG24N9K4QSABG24E
R900778255 4WE10G4X/CW230N9DLSO21
R900777050 5-4WE10L3X/CG24N9K4QS0G24S
R900775956 4WE10D4X/CG24N9DLQMAG24
R900774746 4WE10HA3X/CW48N9K4
R900774046 4WE10D4X/OFCG240N2DLSO482
R900773204 4WE10JB3X/CG24N9K4QM0G24
R900772855 4WE10J3X/CW48N9K4
R900772260 4WE10Q3X/CG24N9K33L
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R900771041 5-4WE10FB3X/CG24N9K4
R900770811 4WE10D4X/OFCG48N9DKL
R900768702 5-4WE10E3X/CG24N9K4QS0G24E
R900767410 4WE10X6-4X/CW110RN4DALQMAG24
R900767409 4WE10EA4X/CW110RN4DALQMAG24
R900766874 4WE10X6-4X/CW110N9DALQMAG24
R900766723 5-4WE10D3X/CG96N9K4
R900766364 4WE10D3X/OFCG240N9K4
R900766363 4WE10D3X/CG240N9K4
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R900765527 5-4WE10Y11-3X/CG12N2K4KSO9
R900765526 5-4WE10Y11-3X/CG26N2K4KSO9
R900765523 5-4WE10G3X/CG26N2K4K
R900765521 5-4WE10E3X/CG26N2K4K
R900765520 5-4WE10H3X/CG12N2K4K
R900765519 5-4WE10H3X/CG26N2K4K
R900765517 5-4WE10Q3X/CG26N2K4K
R900765241 4WE10D73-3X/OFCG24N9K4/A12B30
R900765240 4WE10G73-3X/CG24N9K4/A12SO9
R900765089 4WE10MA3X/OFCG24N9K4/V
R900764145 4WE10GA3X/CG24N9K4K
R900764043 4WE10H4X/CW110N9DKL
R900764037 4WE10E36-3X/CG24N9K4K
R900764006 5-4WE1084-3X/CG24K4QTAG24
R900763946 4WE10D73-3X/OFCG96N9K4/A12
R900763672 4WE10Y3X/CG48N9K4/V
R900763168 4WE10EA4X/CW110N9DKL
R900762952 4WE10G3X/CG42N9K4
R900761069 4WE10H73A3X/CG96N9K4/A12
R900760948 4WE10D3X/CG24N9K4=AN
R900760561 4WE10EA3X/CG12N9K4
R900760483 4WE10Y4X/CW230DL/B08
R900760482 4WE10C4X/OFCW230DL
R900760100 4WE10J19A3X/CG24N9K4
R900759387 4WE10J2-3X/CG24N9K4/V
R900758660 5-4WE10D3X/OFCG24K4QSBG24E
R900758309 4WE10Y3X/CG125N9K4QMBG24
R900758305 4WE10D4X/CG110N9DKL
R900758272 5-4WE10G3X/CG24N9K4QSAG24S
R900758194 4WE10J73-3X/CG24N9K33L/A12
R900758193 4WE10E73-3X/CG24N9K33L/A12
R900758192 4WE10D73-3X/OFCG24N9K33L/A12
R900758191 4WE10D73-3X/CG24N9K33L/A12
R900758187 4WE10D3X/OFCG24N9K33L
R900758186 4WE10D3X/CG24N9K33L
R900758184 4WE10J3X/CG24N9K33L
R900758123 5-4WE10D3X/CG24K4QSABG24S
R900757933 4WE10D3X=CG24N9K4
R900757810 4WE10E4X/CG110N9DL
R900756863 4WE10EA3X/CG220N9K4
R900755000 4WE10E4X/CW110N9DL/V
R900754861 4WE10D3X/CW230N9K4/B08
R900754860 4WE10D4X/OFCG24N9DJL1
R900754184 4WE10D3X/CG240N9K4QMAG24/V
R900754156 4WE10J4X/CG24N9DK25LSO482
R900753301 5-4WE10J3X/CG24N9K4QS0G24S
R900753131 4WE10GB3X/CG24N9K4SO849
R900752820 4WE10J3X/CG48N9K4/V
R900751581 4WE10E4X/CW230NDL
R900751425 5-4WE10J20-3X/CG24N9K4
R900750868 4WE10E3X/CG110N9K4/V
R900750867 4WE10D3X/OFCW110K4
R900749797 5-4WE10D3X/OFCG96N9K4QSABG24E
R900749485 4WE1010-4X/CG24N9DL
R900749235 4WE10GA3X/CG24K4QMAG24
R900748508 4WE10D4X/CG240N2DLSO482
R900748022 5-4WE10E67-3X/CG24N9K4/T06V
R900747802 4WE10D73-3X/OFCG24N9K4/A12B12
R900746595 5-4WE10E3X/CG24N9K4/CV
R900746570 5-4WE10G3X/CG24N9K4QS0G24S
R900746436 5-4WE10D3X/OFCG220N9K4QSBG24E
R900746265 4WE10M3X/CG24N9K4/B08
R900746180 5-4WE10E3X/CG24N9K4QS0G24S
R900745882 5-4WE10D3X/OFCG24K4QSAG24E
R900745812 5-4WE10G3X/CG24N9K4QSABG24S
R900744382 4WE10U10B3X/CG205K4QM0G24
R900744087 4WE10Y3X/CG60N9K4
R900744083 4WE10H3X/CG60N9K4
R900744079 4WE10C3X/CG60N9K4
R900744017 5-4WE10E3X/CG24N9K4QSABG24S
R900743690 5-4WE10D3X/CG24N9K4/A07V
R900742975 4WE10Y3X/CG205N9K4
R900742563 5-4WE10HA3X/CG205N9K4
R900742311 4WE10G3X/CG24N9K4/B08
R900742092 4WE10D3X/CG110N9K4QMAG24
R900740903 5-4WE10D3X/OFCG110N9K4QSBG24S
R900739688 4WE10J4X/CW230N9DL/B10
R900739099 4WE10Y73-3X/CG24N9K4
R900738881 5-4WE10C3X/CG205N9K4
R900738441 5-4WE10D3X/OFCG24N2K26QSABG24ESO702
R900737406 4WE10D3X/CG24N9K4/B15
R900737203 5-4WE10T3X/CG24K4QSAG24E
R900736576 5-4WE10D3X/CG24N9K4QSABG24SSO9
R900734327 4WE10H4X/CG24N9DKL
R900734198 4WE10C4X/CW110N9DAL
R900733764 5-4WE10D3X/OFCG220N9K4QSBG24S
R900733760 4WE10D3X/CG220N9K4QMBG24
R900733706 4WE10HA3X/CG24K4
R900733284 5-4WE10D3X/OFCG125N9K4QSABG24S
R900733234 5-4WE10D3X/OFCG220N9K4QSABG24E
R900732867 5-4WE10D3X/OFCG110N9K4QSAG24S
R900732715 4WE10E3X/CG60N9K4
R900732331 4WE10J4X/CG24N9DAL
而我们知道,当负载为零的时候,如果四通滑阀完全打开,p口压力=t口压力+阀口压力损失(忽略油路上的其它压力损失),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 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 定的压力损失,来维持前置 阀的正常工作。
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