有些带泄油口的液压阀，其泄油口必须直接通油箱，最好不要与系统中总回油管相连接，否则会造成意想不到的后果，例如：减压阀的泄油管若与总回油管相连接时，bucher WUVPB-1NCO-10-1-24VDC

bucher WUVPB-1MCO-10-1 24V DC

bucher WS22GNCB-10-V-1-24VDC

bucher WR22GEDA-10-4 24V DC

bucher WEDS-43-J-6-V-1 24V DC

bucher W2N32SR-6AB3-24VDC

bucher W2N32SN-6AB2-24VDC

bucher W2N32SN-6AB2-24VDC

bucher W2N32SN-6AB224VDC

bucher W2N32OR-6AB3-24VDC

bucher W2N32ON-6AB224VDC

bucher W2N320N-6AB2-24VDC

bucher W2N320N-6AB2-24VDC

bucher W2N22SR-6AB2-24VDC

bucher W2N220N-6AB2-24VDC

bucher SWUVPZ-1NCO-T-ED-10

bucher SWDRVPC-5MDO BZR-D-10-1-24VDC

bucher SRV-AA-6-35

bucher SDDRVB-7HL-P-AF-10

bucher RVSAE3/6DS-112-2-02

bucher RVSAE 3/6-21-01

bucher RS32-330

bucher RKVE40 81602348

bucher RKVE40

bucher RKVE-32 81904056

bucher RKVE-32

bucher RKVE-25-1

bucher RKVE-08

bucher RKVC40

bucher RKVC25+ESH32

bucher RKVC16-Z4+ESH25

bucher RKVC16-Z4

bucher RKVC08-Z4由于在工作中系统总回油管中的流量会随时变化，使通过回油管中油液的压力损失在不断变化，就会造成减压阀输出压力不稳定R900411311 ZDR10VP5-3X/200YM

R900411309 ZDR10VP5-3X/100YM

R900411259 ZDR10DA3-5X/75Y

R900411255 ZDR10DP3-5X/75YM

R900411247 ZDR10DP1-5X/150YM

R900411246 ZDR10DP1-5X/210YM

R900410899 ZDR10DP2-5X/25YM

R900410884 ZDR10DA2-5X/150Y

R900410880 ZDR10DP2-5X/150YM

R900410877 ZDR10DP1-5X/75YM

R900410876 ZDR10DP2-5X/210YM

R900410875 ZDR10DP2-5X/75YM

R900410874 ZDR6DP7-4X/75YM

R900410873 ZDR6DP1-4X/75YMW13

R900410865 ZDR6DP3-4X/75YM

R900410864 ZDR6DA3-4X/75Y

R900410858 ZDR6DP2-4X/210YMSO43

R900410855 ZDR6DA2-4X/210Y

R900410849 ZDR6DA2-4X/150Y

R900410815 ZDR6DA2-4X/75YM

R900410813 ZDR6DA2-4X/75Y

R900410808 ZDR6DA2-4X/25Y

R900410806 ZDR6DP1-4X/150YM

R900409981 ZDR6DA1-4X/150Y

R900409967 ZDR6DP1-4X/75YM

R900409966 ZDR6DA1-4X/75Y

R900409965 ZDR6DP1-4X/25YM

R900409515 ZDR10DA3-5X/210Y

R900408340 ZDR10DB2-5X/150YM

R900407334 ZDR10DA2-5X/25Y

R900406691 ZDR6DA2-4X/210YMSO43

R900406666 ZDR6DP2-4X/75YMJ

R900406651 ZDR10DA2-5X/210Y

R900406335 ZDR10DA3-5X/25Y

R900406329 ZDR10DP3-5X/150YMV

R900406225 ZDR10DA2-5X/150YM

R900406178 ZDR10DA1-5X/150Y

R900404887 ZDR10DP2-5X/150YM/5

R900404886 ZDR10DP2-5X/75YM/5

R900404754 ZDR6DP2-4X/150YM/12

R900404346 ZDR6DP2-4X/25YM/12

R900403851 ZDR6DP2-4X/150YMSO43

R900403687 ZDR6DP2-4X/25YMW99

R900403675 ZDR10DB1-5X/150YM

R900403170 ZDR6DP2-4X/75YMW5

R900401236 ZDR10DP2-5X/210YM/5

R900401235 ZDR6DA1-4X/25YM。2、有些中位卸荷的电液换向阀（如：力士乐系列G、H、F、P、T型等），在控制油口没单独预接控制油的情况下，电液阀无法换向，因此对内控型的电液换向阀必须在其P口加一预压阀或在回油口加一背压阀（产生的背压一般在1Mpa以上，不同厂家、不同规格、不同流量的液压阀该背压值会不同），且其外泄口必须单独接油箱。对外控型的电液换向阀，其控制油口必须连接到在系统工作的各种工况下始终能产生1Mpa以上压力的位置。W2P32SN-6AG2120VAC布赫400510497

W2N43GN-6AD3230VAC布赫400510499

W2P43FN-6AG3120VAC布赫400510500

W2P32ON-6AG2120VAC布赫400510501

W2N22SN-6AB248VDC布赫400510509

W2P43GN-6AG3120VAC布赫400510498

W2N43GN-6RAD3布赫400510480

W2P43GN-6AB324VDC布赫400510473

W2N32ON-6AI224VDC布赫400510443

W2N43GR-6AB424VDC布赫400510467

W2N43FN-6AB3115VACM100布赫400510464

W2N43GN-6AB3115VACM100布赫400510460

W2N43GN-6AB324VDCM100布赫400510459

W2N43FN-6AB3115VAC布赫400510456

W2N32SN-6AG2115VAC布赫400510437

WKOECA6224VDC布赫400504016

W2N43FN-6AB324VDC布赫400510455

W2N43GN-6AB3115VAC布赫400510452

W2N43GN-6AB324VDC布赫400510451

W2N43GN-6AB312VDC布赫400510450

W2P32SN-6AG2230VAC布赫400510445

W2N32SN-6AB224VDCDT布赫400510444

W2P32SN-6AG248VDC布赫400510512

W2N32SN-6AG224VDC布赫400510302

W2N22SR-6AB324VDC布赫400510519

W1CCA8220VDC+HHB-2布赫400510648

W1CCA848VDC+HHB-2布赫400510649

W1DBA8240VACM100布赫400510653

W1CBA8240VACM100布赫400510643

W1DKA824VDC布赫400510669

W1QQA2布赫400510730

W2N32SN-6UAB2布赫400510751

W2P32SN-6VAB2布赫400510753

W2N32ON-6UAB2布赫400510757

W1DBA824VDC+HHB-2布赫400510670

W1CCA896VDCM100布赫400510642

W1DCA812VDC+GADA1S496布赫400510638

W1WQA8布赫400510637

W2N43GN-6AB324VDC+HHB-2布赫400510520

W2N43GN-6AG324VDCM100布赫400510521

W2N43GN-6AB3120VAC布赫400510522

W2N43GN-6AG3127VDCM100布赫400510523

W2N43GN-6AG3220VDCM100布赫400510526

W2N43GN-6AD324VDC布赫400510530

W2N43GN-6AG324VDC+HHNB-2布赫400510532

W2N43GN-6AD3120VAC布赫400510533

W2N43FN-6RAD3布赫400510534

W2N32ON-6AB224VDC+HHB-2布赫400510433

35V-30A-1B-22R

35V-30A-86C-22R

35V-32A-86B-22R

35V-38A-1B-22R

45V-42A-86C-22R

45V-45A-86C-22R

35V-45A-86C-22R

45V-50A-86C-22R

45V-60A-86A-22R

45V-66A-1C-22R

45V-57A-1C-22R

20V-3A-1C-22R

20-5A-1C-22R

20V-7A-1C-22R

20V-9A-1C-22R

20V-11A-1C-22R

20V-14A-1C-22R

25V-12A-1C-22R

25V-14A-1C-22R

25V-17A-1B-22R

35V-21A-1C-22R

45V-75A-86D-22R

45V-66A-86B-22R

45V-60A-1C-22R

45V-50A-86D-22R

45V-50A-1C-22R

45V-45A-1B-22R

45V-42A-1C-22R

35V-32A-1C-22R

35V-25A-1C-22R

35V-35A-1C-22R

35V-25A-86C-22R

25V-25A-1C-22R

25V-21A-1B-22R

25V-19A-1D-22R

25V-15A-1C-22R

25V-10A-1C-22R

20V-12A-1C-22R

20V-10A-1C-22RRKVE-32 81904056

RKVE40

RKVE40 81602348

RS32-330

RVSAE 3/6-21-01

RVSAE3/6DS-112-2-02

SDDRVB-7HL-P-AF-10

SRV-AA-6-35

SWDRVPC-5MDO BZR-D-10-1-24VDC

SWUVPZ-1NCO-T-ED-10

SWUVPZ-1NCO-T-ED-10 24V DC

W2N220N-6AB2-24VDC

W2N22ON-6AB2-24VDC

W2N22SR-6AB2-24VDC

W2N320N-6AB2-24VDC

W2N32ON-6AB224VDC

W2N32OR-6AB3-24VDC

W2N32SN-6AB224VDC

W2N32SN-6AB2-24VDC

W2N32SR-6AB3-24VDC

WEDS-43-J-6-V-1 24V DC

WR22GEDA-10-4 24V DC

WR22GNCA-10V-4 24V DC

WS22GNCB-10-V-1-24VDC

WUVPB-1MCO-10-1 24V DC

WUVPB-1NCO-10-1-24VDC

300000444400078 LBV 12 POO 890-15/RS/0.40/0.00/O/SVO/N

AP100/1,2 D 218

AP100/4,3 D318

Cindy-12-B-PND-S060-A-D9-3

CINDY-16-B-SNS-S200-L-G9-1-SVT-250

Cindy-25-B-CNS-S500-A-D9-3

Cindy-25-B-PND-S500-A-D9-3

CINDY-25-B-SNS-S400-L-G9-1-SVT-250