4WE6HA62/EG24N9K4一級(jí)代理力士樂REXROTH比例減壓閥

一級(jí)代理力士樂REXROTH比例減壓閥

Rexroth力士樂電磁閥原理：通電時(shí)，電磁力驅(qū)動(dòng)先導(dǎo)閥打開先導(dǎo)閥，主閥上腔壓力迅速下降，在主閥上下腔內(nèi)形成壓差，依靠介質(zhì)壓力推動(dòng)主閥關(guān)閉件上移，閥門開啟；斷電時(shí)，彈簧力把先導(dǎo)閥關(guān)閉，入口介質(zhì)壓力通過先導(dǎo)孔迅速進(jìn)入主閥上腔在上腔內(nèi)形成壓差，從而使主閥關(guān)閉。
 特點(diǎn)：體積小，功率低，但介質(zhì)壓差范圍受限，必須滿足壓差條件。

一級(jí)代理力士樂REXROTH比例減壓閥

4WE6M62/EG24N9K4
4WE6Q6X/EG24N9K4+Z5L
4WE6Q6X/EG24N9K4+Z5L
4WE6Y61/EW110N9Z5L
4WE6Y6X/EG24N9K4
4WE6Y6X/EG24N9K4+Z5L
4WEH10D3X/HG24N9K4+Z5L
4WEH10J3X/HG24N9K4+Z5L
4WEH10J4X/6AG24N9ETS2K4
4WEH10J4X/6EG24N9ETS
4WEH10J-50/6AG24NETS2Z5L
4WEH10J73-3X/OFCG24N9K4+Z5L
4WEH10J73-3X/OFCG24N9K4+Z5L
4WEH16D63/0F6AW110-50NS
4WEH16D-7X/6EG24N9ETK4+R
4WEH16D7X/6EW230N9K4
4WEH16E7X/6AG24NETS2Z5L
4WEH16EB7X/6EG24N9EK4/B10D3
4WEH16HD72/OFGEG24N9ETS2K4
4WEH16HD7X/OF6EG24N9K4+Z5L
4WEH16J6X/6AG24N9ET-S2K4+Z5L
4WEH16J6X/6AG24N9ETS2Z4
4WEH16J6X/6AG24N9ETZ5L
4WEH16J-7X/6AG24N9EK4
4WEH16J7X/6AG24N9ETS2K4
4WE6162/EG24N9K4
4WEH16J7X/6AG24NETK9
4WEH16J-7X/6EG24N9ETK4+R
4WEH16J7X/6EG24N9ETS2K4/B10+Z4
4WEH16J7X/6HG24N9ES2K4
4WEH16Q7X/6EG24N9K4+Z5L
4WEH16Q7X/6EG24N9K4+Z5L（帶燈插頭）
4WEH16Q7X/6EG24N9K4+Z5L（帶燈插頭）
4WEH16Q7X/6EG24N9K4+Z5L（帶燈插頭）
4WEH22J6X/6HG24N9ES2K4
4WEH25E6X/6EG24N9ETK4+Z4
4WEH25E6X/6EG24N9ETK4+Z4
A4VG125HD1D1/32R-NSF02F011S
A4FM28/32W-NTC02
A2VK28MAOR1G0PE1-SO
A2FO250/60R-VPB05
A2FO160/61R-PPB05
A2FO160/61L-NPB05
A2FM90/61W-VBB010
A2FM63/61W-VBB010
A2FM32/61W-VAB020
AGEVAA/G24N9K4M/J31
AGEVAA/G24N9K4M
ABZFD-SO080-10N-100-1X/M-A
ABZEK-V1-280M-4-B1-90.00/108.00-HK SIE
ABZASG-P-1X/M
ABZASG-1X/M
ABZASG-P-1X/M
ABZASG-P-1X/M
A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02 A4FM28/32W-NTC02
4WE6D7X/HG24N9K4
4WE6C7X/HG24N9K4
4WE6E7X/HG24N9K4
4WE6J7X/HG24N9K4
4WE6M7X/HG24N9K4
4WE6HB7X/HG24N9K4
4WE6JA7X/HG24N9K4
4E6EA7X/HG24N9K4
4E6EB7X/HG24N9K4
4E6L7X/HG24N9K4
4WE6Y7X/HG24N9K4
4WE6D6X/EG24N9K4
4WE6C6X/EG24N9K4
4WE6E6X/EG24N9K4
4WE6J6X/EG24N9K4
4WE6Y6X/EG24N9K4
4E6G6X/EG24N9K4
4WE6H6X/EG24N9K4
4WE6U6X/EG24N9K4
4WE6D/OFEG24N9K4
4WE6EA6X/EG24N9K4
4WE6EB6X/EG24N9K4
4WE6HB6X/EG24N9K4
4WE6HA6X/EG24N9K4
4WE6U6X/EG24N9K4
4WE6R73-6X/EG24N9K4/A12
3WE6A6X/EG24N9K4
4WE10Y3X/CG24N9K4
4E10D3X/CG24N9K4
4WE10EA3X/CG24N9K4
4WE10EB3X/CG24N9K4
4WE10E3X/CG24N9K4
4E10J3X/CG24N9K4
4WE10L3/CG24N9K4
4WE10U3X/CG24N9K4
4WE10G3X/CG24N9K4
4WE10F3X/CG24N9K4
4WE10M3X/CG24N9K4
4WE6D6X/EW230N9K4
4WE6E6X/EW230N9K4
4WE6J6X/EW230N9K4
4WE10D3X/CW230N9K4
4WE10E3X/CW230N9K4
4WE10J3X/CW230N9K4
4WEH10D4X/HG24N9K4
4WEH10E4X/HG24N9K4
4WEH16E7X/6HG24N9ETK4
4WEH16J7X/6HG24N9ETK4
4WEH16L7X/6HG24N9ETK4
4WEH16U7X/6HG24N9ETK4
4WEH16Y7X/6HG24N9ETK4
4WEH16D7X/6HG24N9ETK4
4WEH16E7X/6EG24N9ETK4
4WEH16J7X/6EG24N9ETK4
4WEH16L7X/6EG24N9ETK4
4WEH16U7X/6EG24N9ETK4
4WEH16Y7X/6EG24N9ETK4
4WEH16C7X/6EG24N9ETK4
4WEH22E7X/6HG24N9ETK4
4WEH22J7X/6HG24N9ETK4
4WEH22L7X/6HG24N9ETK4
4WEH22U7X/6HG24N9ETK4
4WEH25E6X/6HG24N9ETK4
4WEH25EA6X/6HG24N9ETK4
4WEH32E7X/6HG249K4
4WEH32J7X/6HG249K4
4WEJ32L6X/6HG249ETK4
Z1S6C1-3X/V
Z1S6PO5-4V/V
Z2S6-1-6X
Z2S6A-2-6X
Z2S6B-1-6X
Z2S10-1-3X
Z2S10A1-1-3X
Z2S10A2-1-3X
Z2FS10-5-3X/V
Z2FS6-2-4X/2QV
ZDB6VP2-4X/200V
ZDB6VP1-4X/315V
ZDB6VB2-4X/200V
ZDB6VC2-4X/315
ZDB10VA2-4X/100V
ZDR6DA2-4X/75YM
ZDR6DA2-4X/75Y
ZDR6DA2-4X/150Y
ZDR6DP2-4X/75YM
ZDR6DP2-4X/150YM
ZDR6DP2-4X/210YM
ZDR10DP2-5X/150YM
ZDR10DP2-5X/210YM
Z1S6D2-3X
DBDS6P1X/25
DBDH6P1X/200
DBDS10K1X/315
DBDS20K1X/315
DBDS30K1X/315
DB10-1-4X/50UW65
DB20-1-4X/50UW65
DB10-1-4X/200UW65
DB20-1-4X/200UW65
DB10-1-5X/200
DB20-1-5X/200
DB10-1-5X/315
DB20-1-5X/315
DR10-4-4X/100YM
DR10-4-4X/200YM
DR10-5-5X/100YM
DR10-5-5X/200YM
DR20-4-4X/200YM
DZ20-1-5X/200YM
DZC20-1-5X/200XY
DZC30-1-5X/200
DB20-1-4X/200UW65
4WE6D62/EG24N9K4
4WE6Y62/EG24N9K4
4WE6C62/EG24N9K4
4WE6A62/EG24N9K4
4WE6B62/EG24N9K4
4WE6J62/EG24N9K4
4WE6E62/EG24N9K4
4WE6M62/EG24N9K4
4WE6H62/EG24N9K4
4WE6HA62/EG24N9K4
4WE6G62/EG24N9K4
4WE6U62/EG24N9K5
4WE6L62/EG24N9K6
4WE10Y33/CG24N9K4
4WE10D33/CG24N9K4
4WE10C33/CG24N9K4
4WE10L33/CG24N9K4
4WE10U33/CG24N9K4
4WE10J33/CG24N9K4
4WE10E33/CG24N9K4
4WE10G33/CG24N9K4
4WE10H33/CG24N9K4
4WE6D62/EW230N9K4
4WE6Y62/EW230N9K4
4WE6J62/EW230N9K4
4WE6E62/EW230N9K4
4WE6G62/EW230N9K4
4WE6G62/EW110N9K4
4WE10D33/CW230N9K4
4WE10E33/CW230N9K4
4WE10J33/CW230N9K4
4WE10H33/CW230N9K4
4WE10G33/CW230N9K4
4WE6C6X/SG24
4WE6D6X/SG24
4WE6J6X/SG24
4WE6Y6X/SG24
4WE6H6X/SG24
4WE6E6X/SG24
4WE6EA6X/SG24
4WE6EB6X/SG24
4WE6G6X/SG24
DB10-1-4X/50UW65
DB20-1-4X/50UW65
DB10-1-5X/200
DB10-1-5X/315
DB20-1-5X/200
4WE6D6X/OFEG24N9K4
ZDR6DP2-4X/75YM
ZDR6DP2-4X/150YM
ZDR6DP2-4X/210YM
ZDR10DP2-5X/150YM
FD16PA
4WEH16J7X/6EG24
4WEH16D7X/6EG24
4WEH16EA7X/6EG24
4WEH16EB7X/6EG24
4WEH22E（D,J）7X/6AG24
4WEH22E（D,J）7X/6EG24
4WEH22E（D,J）7X/6EW230
DBW10B1-5X/200-6SG24N9K4
DBW10B1-5X/200-6EG24N9K
DBW10B1-5X/200-6EW230
DBW20B1-5X/350-6SG24N9K4
DBW20B1-5X/350-6EG24N9K4
DBW20B1-5X/350-6EW230
DR10-5-5X/200YM
DR10-5-5X/100YM
DR10-4-4X/100YM
LC32A-20D-7X
LC40A-20D-7X
LC40A-20E-7X
LC50A-20D-7X
Z2FS10-5-3X/
Z2FS6-2-4X/2QV
Z2S10-2-3X
Z2S6-2-6X
4WRKE16E-125L3X/6EG24EK31/A1D3M
4WRKE16E-200L3X/6EG24EK31/A1D3M
4WRKE25E350L3X/6EG24EK31/A1D3M
4WRKE25E500L3XH/6EG24EK31/A1D3M
4WREE10E50-2X/G24K31/A1V
4WREE10E75-2X/G24K31/A1V
A10VSO18DFR1/31R－PPA12N00
A10VSO28DFR1/31R－PPA12N00
A10VSO45DFR1/31R-PPA12N00
A10VSO58DFR1/31R-PPA12N00
A10VSO71DFR1/32R-VPB22U99
A10VSO71DFR1/31R-PPA12N00
A10VSO100DFR1/32R-PPB12N00
A10VSO140DFR1/31R-PPB12N00
A2F010/61R-PPB05 A2F010/61L-VAB05
A2F012/61R-PPB05 A2F012/61L-VAB05
A2F016/61R-PPB05 A2F016/61R-VPB05
A2F023/61R-PPB05 A2F016/61R-VPB06
A2F028/61R-PPB05 E-A2F032/61R-PPZ05
A2F032/61R-PPB05 E-A2F032/61R-PPB05
A2F045/61R-PPB05 A2F0250/61R-PPB05
A2F056/61R-PPB05 A2F0200/61R-PPB05
A2F063/61R-PPB05 A2F0180/61R-PPB05
A2F080/61R-PPB05 A2F0160/61R-PPB05
A2F090/61R-PPB05 A2F0125/61R-PPB05
A2F0107/61R-PPB05
A4VSG40EM/10R-PPB10N00 A4VSG40EM/10R-VPB10N00
A4VSG71EM/10R-PPB10N00 A4VSG40EM/10R-VPB10N00
A4VSG125EM/10R-PPB10N00 A4VSG40EM/10R-VZB10N00
A4VSG180EM/10R-PPB10N00 A4VSG40EM/10R-VZH10N00
A4VSG250EM/10R-PPB10N00 A4VSG40EM/10R-VZH10K31
A4VSG125HM/10R-PPB10N00 A4VSG40EM/10R-VZH10K35
A4VSG40HM/10R-PPB10N00
A4VSG250HS/10R-PPB10N0
4WE10D33/CG110N9K4
HED10A12X/200K41G24/1/V
4WRZ16W150-7X/6EG24N9ETK4/D3M
2FRM-6-B-36-31/32-QRV
4WE6D62/EW230NPK4
2FRE6B-2X/25QK4MV
Z456-1X/V
4WE6U50/AW220NZ4
DR10-5-5X/100YM
KHNVS-G3/4-2233
M-35ED6CK1X/350CG24N9K4
M-35ED10CK13/350CG24N9K4
A4VS071MA/10R-PPB13NOO
M-Z4SE6E1X/CG24K4
4WRA6W1-30-2X/G24K4V
VT-VSPA2-1-1X/T5
VT3002-2X/32
A10VS045DRI/3IR-PPA12N00
WS2EM10-5X/10B11ET315K31DV
DBETE-6X/100G 24K 31 A1Y
PV7/16-20RE01MCO-16
4WRAE10W1-30-2X/G24N9K31/F1-V
4WRAE10E1-60-2X/G24N9K31/F1-V
4WRZE16W8-100-7X/6EG24N9ETK31/F1D3M
4WRZE16W8-150-7X/6EG24N9ETK31/F1D3M
A8VO140LA1S5/63R1 NZG05 F024
M/3M7-22
A2FM125/61W-VAB010
A6VM160HD1D/63W-VZB020B
A2FM125/61W-VAB010
A2FM80/61W-VAB010
A11V0190RS/11R-NZD12K84
A10VS028DR/30R-PPA12N00
A10VS028DR/31R-PPA12K01
A10VS028DR/31R-PPA12K01
A10VS028DR/31R-PPA12N00
A10VSO100DR/31RPPA12OO
A10VSO18DR/31R-VPA12N00
A10VSO18DR/31R-VPA12N00
A10VSO71DFR1/31R-PPA12NOO
A10VSO71DR/31RPPA12N00
A4VSO125DR/22RPPB13NOO
A4VSO180DR/22R-PPB13N00
A4VSO250DR/30RPPB13N00
A4VSO250DR/30RPPB13N00
1PF1R4-1X/6.30-500RA01M01
ABZFV-ME-1X/M-A
DB10-1-50/100
DB10-1-5X/200
DB10W10 GX/
DB10W-2-5X/200
DB30-2-5x/200
DBDH10G-1X/315
DBDS10G10/100
DBDS10K1X/200
DBDS10K1X/50
DBDS10P1X/200
DBDS20G1X/100
DBDS20P1X/100
DBDS20P-1X/100
DBDS30K1X/100
DBDS30K1X/100
DBDS30K1X/100
DBDS30K1X/100
DBDS30K1X/200
DBDS30K1X/200
DBDS30K1X/200
DBDS30K1X/200
DBDS6K1X/20
DBDS6P10/20
DBDS6P1X/200
DBE10-5X/100YG24K4M
DBE10-5X/200YG24K4M
DBW10A2-5X/200-6AG24N9K4+Z5L
DBW10A2-5X/200-6AG24N9K4+Z5L
DBW10B 25X/200-6EG24N9K4A08V
DBW10B 25X/200-6EG24N9K4A08V
DBW10B-1-5X/315U6EW230N9K4
DBW10B2-5X/200G24NZ5L
DBW10B-2-5X/200U6EG24N9K4
DBW10B2-5X/315-6EG24N9K4
DBW20A2-52/315-6EG24N9K4
DBW25J-5X/315G24N9K4
DBW30A1-5X/2006EG24N9K4+Z5L
DR10-4-5X/100Y
DR10-4-5X/200Y
DR10-4-5X/200Y
DR10-5-45/100YM
DR10-5-45/100YM
DR10DP1-4X/150YM
DR20-5-5X/200Y
DR20-5-5X/200Y
DR20-5-5X/200Y
DR20-5-5X/200Y
DR20-5-5X/200Y
DR20-5-5X/200YM
DR30-1-30/315YM
DR30-5-5X/100Y
DR30-5-5X/50Y
DR6DP1-5X/75Y
DR6DP1-5X/75Y
DRE10-5X/100YMG24K4M
DZ20-2-5X/315Y
DZ6DP2-5X/75
DZ6DP2-5X/75
E-A10VSO100DR/31R-PPA12NOO
FD12KA2X/B03V
FD12PA2X/B03V
FD16KA2X/B03V
FD16PA2X/B03
FD25KA2X/B04V
FD25PA2X/B04V
FD32PA2X/B06V
HED8OA1X/350 Z14S
LC25A20D7X/004
LC25DR40E7X
LC32A20E7X
LC50DR40E7X
LFA25D7X/FX10
LFA25DB2-71/050
LFA50DB2-71/050
M-3SEW6U36/420MG24N9K4
M-SR10KE05-1X/V
M-SR15KE05-1X/V
M-SR20KE02X/6EG24N9ETK4/B10+Z4
M-SR25KE05-1X/V
M-SR30KE05-1X/V
S10A1.0／＊
S15A1
S15A1.0
S15A2.0
S20A1.0/
S20A-1.0/
S25A1.0／＊
S30P1
SL10PA1-4X/
SL20PA1-4X/V
SL30PA1-4X
SV10PB1-4X
SV20PA1-4X
WEH16HD7X/OF6EG24N9K4+Z5L
Z1S6P1-3X/V
Z2DB10VC2-4X/315
Z2FS10
Z2FS10.5.3X/V
Z2FS10-3 4X
Z2FS10-3X/S2
Z2FS10-5-3X/V
Z2FS10-7-3X
Z2FS16-31/S
Z2FS16-3X/S2
Z2FS16A-2-5X
Z2FS22-3X/S2
Z2FS6
Z2FS6-14X/2Q
Z2FS6-2-43/1QV
Z2FS6-2-4x/
Z2FS6-2-4X/2Q
Z2FS6-2-4x/2QV
Z2FS6-5-43/2QV
Z2FS6-5-4X/2Q
Z2FS6-7-4X/2Q
Z2FS6A2-42/2QV
Z2FS6B-7-4X/2QV
Z2S10-2-3X/
Z2S16-1-31
Z2S16-1-5X
Z2S6-1-64
Z2S6-1-6X
Z2S6-2-6X/
Z2S6B
Z2S6B-40
ZDB 6VP2-4X/100
ZDB10VA1-4X/200
ZDB10VA2-4X/100V
ZDB10VB2-41/100V
ZDB10VB2-4X/200V
ZDB6VA1-4X/50V
ZDB6VB2-42/100V
ZDB6VP2.4X/200
ZDB6VP2-40/315
ZDB6VP2-4X/100V
ZDB6VP2-4X/200
ZDR10DA-1-5X/210Y
ZDR10DA2-5X/150Y
ZDR10DB2-5X/210YM
ZDR10DP1-5X/150YM
ZDR10DP-1-5X/210Y
ZDR10DP2-5X/210YM
ZDR10P2-5X/150YM
ZDR10VA4-3X/200Y
ZDR10VA5-3X/100Y
ZDR10VB1-5X/100Y
ZDR6DA1-4X/150Y
ZDR6DA2-4X/150Y
ZDR6DA2-4X/210YM
ZDR6DAZ-4X/75YM
ZDR6DP2.1X/150YM
ZDR6DP2-43/75YM
ZDR6DP2-4X/150YM
4WE6E6X/G24N9K4
4WRA6WA5--10B/24NZ4/M
4WE6162/EG24N9K4
DR10-5-52/100YM
Z2FS22-31/S2
DBW10B2-52/315-6EG24N9K4
4WE6D62/EG24N9K4
2FRM10-30/50L
DBDH10P
S10A1/2
S30A1/2
DBDS20G-1X/315
SL30GA2-4X
LC-16-A20E7X-2BAR-GN16
LC-25-A20E7X-2BAR-GN25
LC-40-DB20E7X-2BAR-GN40
LFA 16 D-7X/F
LFA-16-WEA-7X-GN16
LFA25E-7X/CA40DQMG24F
M-3SED-6-U-K-1X/350CG24NK4
M-3SED-6-U-K-1X/350CG24N9K4
DBDS-20-K1X/200-GN20-200
DBDS-30-K1X/315-GN30-315
DBDS-6-K1X/50-GN6-50BAR
4WRZ10E85-7X/6EG24N9ETK4/D3M
：唐玙昺

：   

上海穎哲工業(yè)自動(dòng)化設(shè)備有限公司
上海市黃浦區(qū)北京東路668號(hào)上海科技京城東樓20C2

德國力士樂REXROTH比例閥包括比例流量閥、比例壓力閥、比例換向閥。工程機(jī)械液壓操作特點(diǎn)，以結(jié)構(gòu)形式劃分電液比例閥主要有兩類：一類是螺旋插裝式比例閥（screwin cartridge proportional valve），另一類是滑閥式比例閥（spool proportional valve）。

德國力士樂REXROTH比例閥是螺紋將電磁比例插裝件固定油路集成塊上元件，螺旋插裝閥具有應(yīng)用靈活、節(jié)省管路和成本低廉等特點(diǎn)，近年來工程機(jī)械上應(yīng)用越來越廣泛。常用螺旋插裝式比例閥有二通、三通、四通和多通等形式，二通式比例閥主比例節(jié)流閥，它常它元件一起構(gòu)成復(fù)合閥，對(duì)流量、壓力進(jìn)行控制；三通式比例閥主比例減壓閥，也是移動(dòng)式機(jī)械液壓系統(tǒng)中應(yīng)用較多比例閥，它主對(duì)液動(dòng)操作多路閥先導(dǎo)油路進(jìn)行操作。利用三通式比例減壓閥可以代替?zhèn)鹘y(tǒng)手動(dòng)減壓式先導(dǎo)閥，它比手動(dòng)先導(dǎo)閥具有更多靈活性和更高控制精度?？梢灾瞥扇鐖D1所示比例伺服控制手動(dòng)多路閥，不同輸入信號(hào)，減壓閥使輸出活塞具有不同壓力或流量進(jìn)而實(shí)現(xiàn)對(duì)多路閥閥芯位移進(jìn)行比例控制。四通或多通螺旋插裝式比例閥可以對(duì)工作裝置實(shí)現(xiàn)單獨(dú)控制。

德國力士樂REXROTH比例閥一種是開關(guān)控制：要么全開、要么全關(guān)，流量要么zui大、要么zui小，沒有中間狀態(tài)，如普通的電磁直通閥、電磁換向閥、電液換向閥。

德國力士樂REXROTH比例閥另一種是連續(xù)控制：閥口可以根據(jù)需要打開任意一個(gè)開度，由此控制通過流量的大小，這類閥有手動(dòng)控制的，如節(jié)流閥，也有電控的，如比例閥、伺服閥。
REXROTH力士樂比例閥比例閥或伺服閥的目的就是：以電控方式實(shí)現(xiàn)對(duì)流量的節(jié)流控制（當(dāng)然經(jīng)過結(jié)構(gòu)上的改動(dòng)也可實(shí)現(xiàn)壓力控制等），既然是節(jié)流控制，就必然有能量損失，伺服閥和其它閥不同的是，它的能量損失更大一些，因?yàn)樗枰欢ǖ牧髁縼砭S持前置級(jí)控制油路的工作。

德國力士樂REXROTH比例閥一般來說和換向閥一樣是滑閥結(jié)構(gòu)，只不過閥芯的換向不是靠電磁鐵來推動(dòng)，而是靠前置級(jí)閥輸出的液壓力來推動(dòng)，這一點(diǎn)和電液換向閥比較相似，只不過電液換向閥的前置級(jí)閥是電磁換向閥，而伺服閥的前置級(jí)閥是動(dòng)態(tài)特性比較好的噴嘴擋板閥或射流管閥。

德國力士樂REXROTH比例閥也就是說，伺服閥的主閥是靠前置級(jí)閥的輸出壓力來控制的，而前置級(jí)閥的壓力則來自于伺服閥的入口p，假如p口的壓力不足，前置級(jí)閥就不能輸出足夠的壓力來推動(dòng)主閥芯動(dòng)作。

德國力士樂REXROTH比例閥其實(shí)缺點(diǎn)極多：能耗浪費(fèi)大、容易出故障、抗污染能力差、價(jià)格昂貴等等等等，好處只有一個(gè)：動(dòng)態(tài)性能是所有液壓閥中zui高的。就憑著這一個(gè)優(yōu)點(diǎn)，在很多對(duì)動(dòng)態(tài)特性要求高的場(chǎng)合不得不使用伺服閥，如飛機(jī)火箭的舵機(jī)控制、汽輪機(jī)調(diào)速等等。動(dòng)態(tài)要求低一點(diǎn)的，基本上都是比例閥的天下了。一般說來，好像伺服系統(tǒng)都是閉環(huán)控制，比例多用于開環(huán)控制；其次比例閥類型要多，有比例壓力、流量控制閥等，控制比伺服藥靈活一些。從他們內(nèi)部結(jié)構(gòu)看，伺服閥多是零遮蓋，比例閥則有一定的死區(qū)，控制精度要低，向應(yīng)要慢。但從發(fā)展趨勢(shì)看，特別在比例方向流量控制閥和伺服閥方面，兩者性能差別逐漸在縮小，另外比例閥的成本比伺服閥要低許多，抗污染能力也強(qiáng)！

    德國REXROTH力士樂比例閥的輸入壓力為零.即.;時(shí),輸出腔的壓力通過比例閥皮圈凸筋間空酸從唇口泄去高壓,同時(shí),當(dāng)比例閥芯所受的彈簧力大于向右的液壓力時(shí),比例閥彈簧將比例閥芯推回原始位置,使比例閥芯與比例閥皮圈內(nèi)孔*分離而*泄壓.此時(shí)輸入輸出壓力為零.隨著輸入壓力.增大,即左增大,使比例滑閥單向力平衡遭破壞.當(dāng)6-時(shí),比例閥芯左移與比例閥皮圈產(chǎn)生間隙形成節(jié)流并混合比倒閥常見的故障為:1,輸入輸出壓力同步.2,低壓時(shí)輔人輸出壓力同步,高壓時(shí)輸入輸出壓力正常.3,低壓時(shí)輸入輸出壓力正常,高壓時(shí)輸入輸出壓力不正常.,輸入壓力1994.№為零時(shí)（不制動(dòng)時(shí)）,輸出壓力不為零等等.為混合比倒圉工作性能試驗(yàn)示意圖.試驗(yàn)時(shí),先將管內(nèi)的空氣排凈,然后分別取低,中,高三個(gè)壓力進(jìn)行試驗(yàn),輸入輔出壓力符合表1所示即為合格.表混合比例閥試驗(yàn)參數(shù)表單位:表2為混合比例悶常見故障和處理方法.混合比例向在拆卸維修過程中,若污染嚴(yán)重,可用變性酒精清詵,然后烘干后裝配.橡膠件裝配時(shí)表面需涂上清潔的制動(dòng)液,橡膠件不允許被機(jī)油,汽油等污染.表2混合比例閥常見故障和處理故障現(xiàn)象對(duì)制動(dòng)性的膨響常見故障處理方法輸入輸出空載制動(dòng)時(shí)汽車沒有.點(diǎn),比髑閥油封唇口,更換比例悶油封

（1）頭"的感覺.有效制動(dòng)距開裂,破損壓力同步2,正確裝配離加長2,維修時(shí)裝配錯(cuò)誤低壓時(shí)輸入輸出,比例閥芯（2）事動(dòng)卡,檢查比例悶芯表而是壓力同步,高壓影響不太明顯滯否碰傷2,比例閥皮圈侶1邊過時(shí)正常2更換比倒閥皮圈人低壓時(shí)輸入輸出緊急制動(dòng)時(shí)汽車沒有.點(diǎn)壓力正常,高壓頭"的感覺.有效制動(dòng)距混合閥堵（6）膨脹變形童換混合閥堵麗×如）時(shí)異常離加大.,檢查比倒悶彈簧是否1,比倒閥芯不回位已失效,比仞閥芯小頭表輸入壓力回零時(shí)兩后輪制動(dòng)鼓過熱,后制2,混合比例閥殼體盯肭面是否碰傷動(dòng)蹄早期磨損,油耗增比例閥腔小端盲孔臟堵2,清洗干凈混合比仞闊輸出壓力不回加3,比倒悶皮圈國）膨脹失殼體效3,更換比例悶皮囤國）如圖6）制動(dòng)力不夠,制動(dòng)距離過1,檢查進(jìn)出油管接頭輸出壓力低滲漏2,檢查混合悶堵塞火3,檢查比例閻端塞目枷雌。