品牌:力士乐
发货:3天内
优势力士乐插装阀LFA16D-7X/FV
武穴黎翔机电设备有限公司，询价联系人：何女士
询价电话：0713-6542758，手机：18934630908
询价传真：0713-6542758
询价QQ: 736567721,704552157
现货特价型号：R900925687 4WRAE10W1-30-22/G24N9K31/F1V 2台
0811402141 DBETBEX-1X/315G24K31F1M 2台
用以改变管道内气体流向的控制元件叫方向控制阀。
在实际应用中，可根据不同的需要将方向控制阀分成若干类别：
（1）按照气体在管道的流动方向，如果只允许气体向一个方向流动，这样的阀叫做单向型控制阀，比如单向阀，梭阀等；可以改变气体流向的控制阀叫做换向阀，比如常用的2way2port，2way3port，2way5port，3way5port等。
（2）按照控制方式可分为电磁阀，机械阀，气控阀，人控阀。其中电磁阀又可以分为单和双电控阀两种；机械阀可分为球头阀，滚轮阀等多种；气控阀也可分为单气控和双气控阀；人力阀 可以分为手动阀，脚踏阀两种。
（3）按工作原理可以分为直动阀和先导阀，直动阀就是靠人力或者电磁力，气动力直接实现换向要求的阀；先导阀是由先导头和阀主体2部分构成，有先导头活塞驱动阀主体里面的阀杆实现换向。
（4）根据换向阀杆的工作位置可以将阀分为2way，3way阀。
（5）根据阀上气孔的多少来进行划分，可以分为2port，3port，5port阀。
普通单向阀（逆止阀或止回阀）
功用：只允许油液正向流动，不许反流。
分类：直通式、直角式
结构：阀体、阀心锥形、钢球式 、弹簧等
司专业经销德国力士乐Rexroth，在力士乐液压泵、液压阀、伺服及比例阀、放大板等产品具有很强的竞争优势，优势产品型号有4WE 、4WM 、DBD 、DR 、ZDB 、Z2FS 系列阀，A4V、A10VS0、A2FO系列柱塞泵，A2FE、A2FM，HED系列压力继电器
SVandSL型号
液压先导单向阀
规格6至150
带或不带泄油口（只适用于6至10规格）
可进行预减压（只适用于10至32规格）
底板安装("P"):
规格6：安装面按DIN24340A型和ISO4401，底板参见RE45052
规格10至32：安装面按DIN24340A型和ISO4401，底板参见RE45062
螺纹连接("G")（只适用于规格10至32）
法兰连接("G")（只适用于52至150规格）
连接法兰参见RE45501
多个开启压力插装阀 DBDS1X/25
LC40DB20E-7X
LC40B 10E-7X
LC32DB20E7X
LC40B05E-7X
盖板 LFA40RF-7X/F12
LFA50RF-7X/F12
LFA25RF-7X/F12
LFA32D-7X/FX12
LFA16 EWA-70/CA40D
LFA40WEA-7X
LFA63D-7X/F
LFA32D-7X/FX12
LFA16D-7X/FV
LFA16D-711/FV
LFA25 EWMB68-7X/CA05EQMG24P15V
LFA25D9-71/V 德
LFA25WEMA5-65/V
LFA32DRW2-71/315
LFA32GWA-7X/P15
LFA25E71/CA10DQMG24FX10
阀 LFA16D-7X/FV
LFA16D-711/FV
LFA25 EWMB68-7X/CA05EQMG24P15V
LFA25D9-71/V
LFA25WEMA5-65/V
LFA40H2-7X/F
LFA32H2-7X/F
LFA25E71/CA10DQMG24FX10
LFA40H2-7X/F
LFA32H2-7X/F
插装阀体LFA32DBW-2-7X/420V/12
换向阀 4WEH22J7X/6EG24N9ETK4/B10
4WMM10E31
4WMM10J31
DG3V-8-8C
DG3V-3-2N
电磁换向阀 4WE10J3X/CG24N9K4
3DREP 6C-20=25EG24N9K4/M=00
4WE10J3X/CG24NK4
4WE6D5X/AG24NK4
4WE6J5X/AG24NK4 4WE6Y5X/AG24NK4
4WE6Y5X/AG24NK4
4WE10J3X/CG110N9K4
比例换向阀 4WRZE32W8-520-7X/6EG24NIETK31F1/D3M+Z31
工作原理：液流从进油口流入时，A →B
液流从出油口流入时，A → B
开启压力：0、04——0、1MPa
做背压阀：Pk=0.2——0.6 MPa 3
液控单向阀
功用：正向流通，反向受控流通
结构：普通单向阀+液控装置
K不通压力油，A → B
工作原理〈
0811404520 4WRPH6C3B24L-2X/G24K0/M-784
0811404504 4WRLE35W1100SJ-3X/G24K0/A1M
0811404441 4WRLE27Q4-430M-3X/G24K0/A1M
0811404437 4WRLE25X370M-3X/G24K0/A1M-812
0811404436 4WRLE27X430M-3X/G24K0/A1M-812
0811404434 4WRLE25X370M-3X/G24ETK0/A1M-812
0811404432 4WRLE27V430M-3X/G24K0/A1M
0811404431 4WRLE25Q5-370M-3X/G24K0/A1M
0811404430 4WRLE25V370M-3X/G24K0/A1M
0811404427 4WRL25E1-350S-3X/G24Z4/M-755
0811404423 4WRL25V1-370M-3X/G24K0/M-750
0811404421 4WRL25W4-350S-3X/G24Z4/M
0811404405 4WRL25V370M-3X/G24Z4/M
0811404393 4WRL10V85M-3X/G24TZ4/M
0811404390 4WRL10V85M-3X/G24ETZ4/M
0811404370 4WRLE16W5-180S-3X/G24K0/A1M-732
K通压力油，A → B
结构特点：B→ A，∵ PB=P工，很高
∴ 弹簧腔背压很大，pk很大时才能顶开阀心,影响可靠性。
故 可采用如下措施
1) 采用先导阀预先卸压
2） 采用外泄口回油降低背压
应用：∵ 液控单向阀具有良好的反密封性
R900905302 LFA25D-7X/F
R900930724 LFA25D-7X/FV
R900912693 LFA25H1-7X/F
R900969014 LFA25H1-7X/FV
R900912694 LFA25H2-7X/F
R900944374 LFA25H2-7X/FV
R900912697 LFA25H3-7X/F
R900912698 LFA25H4-7X/F
R900247921 LFA25H4-7X/FV
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R901085238 LFA25G-7X/V
R900955026 LFA25R-7X/
R901027525 LFA25R-7X/V
R900927301 LFA25RF-7X/
R900937425 LFA25RF-7X/V
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R900931229 LFA25WEA-7X/V
R900912685 LFA25WEB-7X/
R901086744 LFA25WEB-7X/V
R900912687 LFA25WEMA-7X/
R900945768 LFA25WEMA-7X/V
R900962735 LFA25WEMB-7X/
R900912689 LFA25WECA-7X/
R900912675 LFA25GWA-7X/
R901010291 LFA25GWA-7X/V
R900912677 LFA25GWB-7X/
R900912691 LFA25KWA-7X/
R900930678 LFA25KWA-7X/V
R900912692 LFA25KWB-7X/
R900912668 LFA25E-7X/CA10DQMG24F
R900940292 LFA25E-7X/CA10DQMG24FV
R900912669 LFA25E-7X/CA20DQMG24F
R900729302 LFA25E-7X/CA20DQMG24FV
R900912670 LFA25E-7X/CA40DQMG24F
R901125541 LFA25E-7X/CA40DQMG24FV
R900922862 LFA25E-7X/CB10DQMG24F
R900708783 LFA25E-7X/CB20DQMG24F
R900956802 LFA25E-7X/CB40DQMG24F
R900948947 LFA25EH2-7X/CA10DQMG24F
R900958282 LFA25EH2-7X/CA20DQMG24F
R900931843 LFA25EH2-7X/CA40DQMG24F
R901178649 LFA25EH2-7X/CA40DQMG24FV
R900706830 LFA25EH2-7X/CB10DQMG24F
R900962433 LFA25EH2-7X/CB20DQMG24F
R900618581 LFA25EH2-7X/CB40DQMG24F
R900912671 LFA25EWA-7X/CA10DQMG24
R900729273 LFA25EWA-7X/CA10DQMG24V
R900912672 LFA25EWA-7X/CA20DQMG24
R900912673 LFA25EWA-7X/CA40DQMG24
R900949283 LFA25EWA-7X/CB20DQMG24
R901033410 LFA25EWA-7X/CB40DQMG24
R900955715 LFA25EWB-7X/CA20DQMG24
R901126238 LFA25EWB-7X/CA40DQMG24
R901158198 LFA25EWB-7X/CB10DQMG24
R900962435 LFA25EWB-7X/CB20DQMG24
R900964610 LFA25EWB-7X/CB40DQMG24
R900905303 LFA32D-7X/F
R900929930 LFA32D-7X/FV
R900912727 LFA32H1-7X/F
R900973947 LFA32H1-7X/FV
R900912728 LFA32H2-7X/F
R900951828 LFA32H2-7X/FV
R900912731 LFA32H3-7X/F
R900912732 LFA32H4-7X/F
R900912707 LFA32G-7X/
R901002549 LFA32G-7X/V
R900930122 LFA32R-7X/
R900718072 LFA32R-7X/V
R901215097 LFA32RF-7X/
R900962321 LFA32RF-7X/V
R900912712 LFA32WEA-7X/
R900948792 LFA32WEA-7X/V
R900912719 LFA32WEB-7X/
R901086737 LFA32WEB-7X/V
R900912721 LFA32WEMA-7X/
R900733409 LFA32WEMA-7X/V
R900932301 LFA32WEMB-7X/
R900928796 LFA32WECA-7X/
R900912708 LFA32GWA-7X/
R900978623 LFA32GWA-7X/V
R900912710 LFA32GWB-7X/
R900912725 LFA32KWA-7X/
R900969813 LFA32KWA-7X/V
R900912726 LFA32KWB-7X/
R900912701 LFA32E-7X/CA10DQMG24F
R900943951 LFA32E-7X/CA10DQMG24FV
R900912702 LFA32E-7X/CA20DQMG24F
R901231520 LFA32E-7X/CA20DQMG24FV
R900912703 LFA32E-7X/CA40DQMG24F
R900248113 LFA32E-7X/CB10DQMG24F
R900934609 LFA32E-7X/CB20DQMG24F
R901071133 LFA32E-7X/CB40DQMG24F
R901063858 LFA32EH2-7X/CA10DQMG24F
R900937370 LFA32EH2-7X/CA20DQMG24F
R901176130 LFA32EH2-7X/CA20DQMG24FV
R900938896 LFA32EH2-7X/CA40DQMG24F
R900975360 LFA32EH2-7X/CB10DQMG24F
R901054321 LFA32EH2-7X/CB10DQMG24FV
R900977000 LFA32EH2-7X/CB40DQMG24F
R900912704 LFA32EWA-7X/CA10DQMG24
R900912705 LFA32EWA-7X/CA20DQMG24
R900729308 LFA32EWA-7X/CA20DQMG24V
R900912706 LFA32EWA-7X/CA40DQMG24
R901194395 LFA32EWA-7X/CB10DQMG24
R900966157 LFA32EWA-7X/CB20DQMG24
R901058891 LFA32EWA-7X/CB40DQMG24
R900931071 LFA32EWB-7X/CA10DQMG24
R900947051 LFA32EWB-7X/CA20DQMG24
R901119788 LFA32EWB-7X/CB20DQMG24
R900938073 LFA40D-7X/F
R900974094 LFA40D-7X/FV
R900938121 LFA40H1-7X/F
R900969017 LFA40H1-7X/FV
R900938122 LFA40H2-7X/F
R900969617 LFA40H2-7X/FV
R900938128 LFA40H3-7X/F
R901210443 LFA40H3-7X/FV
R900938130 LFA40H4-7X/F
R900769716 LFA40H4-7X/FV
R900938113 LFA40G-7X/
R901009461 LFA40G-7X/V
R900707939 LFA40R-7X/
R901072192 LFA40R-7X/V
R900938138 LFA40RF-7X/
R900976527 LFA40RF-7X/V
R900931581 LFA40WEA-7X/
R900972506 LFA40WEA-7X/V
R900938147 LFA40WEB-7X/
R901046501 LFA40WEB-7X/V
R900938144 LFA40WEMA-7X/
R901214116 LFA40WEMA-7X/V
R900938149 LFA40WEMB-7X/
R900706496 LFA40WEMB-7X/V
R900973165 LFA40WECA-7X/
R900938114 LFA40GWA-7X/
R900979610 LFA40GWA-7X/V
R900938120 LFA40GWB-7X/
R900938133 LFA40KWA-7X/
R901096470 LFA40KWA-7X/V
R900938136 LFA40KWB-7X/
R900971425 LFA40E-7X/CA10DQMG24F
R900938106 LFA40E-7X/CA20DQMG24F
R900729277 LFA40E-7X/CA20DQMG24FV
R900938107 LFA40E-7X/CA40DQMG24F
R901126643 LFA40E-7X/CA40DQMG24FV
R900248114 LFA40E-7X/CB10DQMG24F
R901178106 LFA40E-7X/CB20DQMG24F
R901190466 LFA40E-7X/CB40DQMG24F
R901121758 LFA40EH2-7X/CA10DQMG24F
R900745807 LFA40EH2-7X/CA20DQMG24F
R901095395 LFA40EH2-7X/CA20DQMG24FV
R900938108 LFA40EH2-7X/CA40DQMG24F
R901242955 LFA40EH2-7X/CB10DQMG24F
R900952906 LFA40EH2-7X/CB40DQMG24F
R900976537 LFA40EWA-7X/CA10DQMG24
R900955459 LFA40EWA-7X/CA20DQMG24
R900954782 LFA40EWA-7X/CA40DQMG24
R901143787 LFA40EWA-7X/CB10DQMG24
R900740893 LFA40EWA-7X/CB20DQMG24
R900723297 LFA40EWA-7X/CB40DQMG24
R900938110 LFA40EWB-7X/CA10DQMG24
R901227951 LFA40EWB-7X/CA40DQMG24
R900938150 LFA50D-7X/F
R900978445 LFA50D-7X/FV
R900938205 LFA50H2-7X/F
R900969812 LFA50H2-7X/FV
R900938208 LFA50H4-7X/F
R900938199 LFA50G-7X/
R901043564 LFA50G-7X/V
R900938212 LFA50R-7X/
R900938213 LFA50RF-7X/
R901111154 LFA50RF-7X/V
R900938215 LFA50WEA-7X/
R901108819 LFA50WEA-7X/V
R900938222 LFA50WEB-7X/
R900968680 LFA50WEMA-7X/
R901215678 LFA50WEMA-7X/V
R900938224 LFA50WEMB-7X/
R900938221 LFA50WECA-7X/
R900938200 LFA50GWA-7X/
R900737992 LFA50GWA-7X/V
R900938203 LFA50GWB-7X/
R900938209 LFA50KWA-7X/
R900248830 LFA50KWA-7X/V
R900938211 LFA50KWB-7X/
R900938195 LFA50E-7X/CA10DQMG24F
R901250571 LFA50E-7X/CA10DQMG24FV
R900938196 LFA50E-7X/CA20DQMG24F
R900938197 LFA50E-7X/CA40DQMG24F
R901236774 LFA50E-7X/CB20DQMG24F
R900959534 LFA50E-7X/CB40DQMG24F
R901008355 LFA50EH2-7X/CA10DQ6G24F
R900711196 LFA50EH2-7X/CA20DQ6G24F
R900767687 LFA50EH2-7X/CA40DQ6G24F
R901134194 LFA50EH2-7X/CB20DQ6G24F
R900768456 LFA50EH2-7X/CB40DQ6G24F
R900956378 LFA50EWA-7X/CA10DQMG24
R900961896 LFA50EWA-7X/CA20DQMG24
R900729279 LFA50EWA-7X/CA20DQMG24V
R901114046 LFA50EWA-7X/CA40DQMG24
R900740894 LFA50EWA-7X/CB20DQMG24
R901137966 LFA50EWA-7X/CB40DQMG24
R901073878 LFA50EWB-7X/CA10DQMG24
R900952907 LFA50EWB-7X/CA40DQMG24
R900938225 LFA63D-7X/F
R900974618 LFA63D-7X/FV
R900938250 LFA63H2-7X/F
R900970759 LFA63H2-7X/FV
R900938253 LFA63H4-7X/F
R900938244 LFA63G-7X/
R901113105 LFA63R-7X/
R901113110 LFA63RF-7X/
R900938257 LFA63WEA-7X/
R900974616 LFA63WEA-7X/V
R900967026 LFA63WEB-7X/
R900966682 LFA63WEMA-7X/
R901215895 LFA63WEMA-7X/V
R900966642 LFA63WEMB-7X/
R900247696 LFA63WECA-7X/
R900938245 LFA63GWA-7X/
R900954554 LFA63GWB-7X/
R900938254 LFA63KWA-7X/
R901228529 LFA63KWA-7X/V
R900938256 LFA63KWB-7X/
R901072771 LFA63E-7X/CA10DQMG24F
R901112161 LFA63E-7X/CA10DQMG24FV
R900766771 LFA63E-7X/CA20DQMG24F
R901130046 LFA63E-7X/CA20DQMG24FV
R900938242 LFA63E-7X/CA40DQMG24F
R900248115 LFA63E-7X/CB10DQMG24F
R901019662 LFA63E-7X/CB40DQMG24F
R900718073 LFA63EH2-7X/CA10DQ6G24F
R900702958 LFA63EH2-7X/CA20DQ6G24F
R901045542 LFA63EH2-7X/CA40DQ6G24F
R901035001 LFA63EH2-7X/CB40DQ6G24F
R900700168 LFA63EWA-7X/CA10DQMG24
R900964277 LFA63EWA-7X/CA20DQMG24
R900956114 LFA63EWA-7X/CA40DQMG24
R901072199 LFA63EWA-7X/CB10DQMG24V
R900960550 LFA63EWA-7X/CB20DQMG24
R901063093 LFA63EWA-7X/CB40DQMG24
R900706124 LFA63EWB-7X/CA10DQMG24
R900726252 LFA63EWB-7X/CA40DQMG24
R900502052 LFA80D-6X/F
R900532511 LFA80D-6X/FV
R900527919 LFA80H2-6X/F
R901047039 LFA80H2-6X/FV
R900936077 LFA80H4-6X/F
R900535627 LFA80G-6X/
R901000365 LFA80R2-6X/
R900472573 LFA80WEA-6X/
R900533545 LFA80WEB-6X/
R901230907 LFA80WEB8-6X/
R900457900 LFA80WEA9-6X/
R900474107 LFA80GWA-6X/
R900594733 LFA80GWB-6X/
R900472575 LFA80KWA-6X/
R900516284 LFA100D-6X/F
R900977105 LFA100D-6X/FV
R900559554 LFA100H2-6X/F
R901160939 LFA100H2-6X/FV
R901016443 LFA100H4-6X/F
R900534350 LFA100H4-6X/FV
R900566376 LFA100G-6X/
R901228514 LFA100G-6X/V
R900532425 LFA100WEA-6X/
R900550065 LFA100WEB-6X/
R900437431 LFA100WEA8-6X/
R901197566 LFA100WEB8-6X/
R900532424 LFA100GWA-6X/
R900536521 LFA100KWA-6X/
R901228519 LFA100KWA-6X/V
R900582428 LFA 125 D-2X/F
R900535628 LFA 125 D-2X/FV
节流阀 DV-10-01.1/0
DV-20-1-0.1/0
单向节流阀 Z2FS16-3X/S 2S10-5-3X
Z2FS6-5-4X/2QV Z2FS22-3X/S2
Z2FS22-3X/S2 2S10-5-3X 2S10-5-3X
2S10-5-3X
MK10G1X
双单向节流阀 Z2FS10-2-3X/ Z2FS10-3X/
Z2FS10-3X/
Z2FS16-3X/S Z2FS6-2-4X/2QV
Z2FS6-2-4X/2QV
叠加式单向节流阀 Z2FS22-3X/S2 Z2FS10-3X
Z2FS10-3X
Z2FS6-30B Z2FS10-5-3X
Z2FS10-5-3X
叠加式节流阀 Z2FS6-2-4X Z2FS6B2-4X/2QV
Z2FS6B2-4X/2QV
Z2FS10-5-3X Z2FS6A2-4X/2QV
Z2FS6A2-4X/2QV
管式节流阀 MK10G1X
液压阀作为液压系统的控制枢纽，运动频繁，对各组成部分器件的精度要求、密封性、可靠性都要求非常高，国外大部分企业都采用滚压来提高精度配合，如：日本的小松机械、日立机械等，在一些重要部件图纸中都明确要求滚压加工。? 清洗液压元件逐步实现了标准化、系列化，其规格、品种、质量、性能都有了很大提高，尤其是采用电子技术、伺服技术等新技术新工艺后，液压系统的质量得到了显著的提高，其在国民经济及军事工业中发挥了重大作用。从不同的角度出发，可以把液压系统分成不同的形式。工作压力：输入马达油液的实际压力，其大小决定于马达的负载。油缸是工程机械最主要部件，传统的加工方法是：拉削缸体——精镗缸体——磨削缸体。
∴ 常用于保压、锁紧和平衡回路
梭阀、双压阀和快速排气阀
VT3000-36
VT-VSPA2-1-11A/T5
VT-PPV-1-1X/V0/0
VT3000-3X
VT-VSPA1-1-1X
VT3002-2X/32D
VT3000-36
VT-VSPA2-1-1X/T5
VT-VSPA2-50-1X/T1
VT-VSPA2-50-1X/T5
VT3006-3X
VT3000-3X
VT11118-1X
VT11075-1X
VT-PPV-1-1X/V0/0
VT-VSPA1-1-1X
VT-VSPA2-1-1X/T1
VT-VSPA2-1-1X/T5
VT-VSPA2-1-2X/V0/T1
VT11011-1X/
VT-PVAR2-10/0
VT-PVPQ1-1X/1
VT5006-1X
VT-VRPA2-1-1X/VO/T5
VT-VRPA2-1-1X/VO/T1
VT-VSPA2-1-2X/V0/T5
VT-VRPA2-2-1X/V0/T1
VT-VRPA2-2-1X/V0/T5
VT-VSPA2-1-2X/V0/T1
VT11034-1X
VT5035-1X
VT5041-2X/1
VT5041-2X/3
VT11025
VT11024
VT11006-1X/
VT3024-3X
VT3002-2X/32D
VT11131-1X/
VT11132-1X/
VT11165-1X/
VT2000-5X/
VT11012-1X
VT-HNC100-1-23/W-08-P-0
VT-PVAR2-1X/2
VT-SR35
VT-VRPA1-151-1X/V/0/0
VT10468-3X/BO-RX
VT11015-1X/
VT12302-2X/
VT-VRPA2-527-1X/V0/RTS
VT-VRPA2-537-1X/V0/RTS
VT-VRPA1-527-1X/V0/QV
VT-VRRA1-527-2X/V0
VT-VETSY-1-1X/1-2-1-1-1/
VT-SR1-1X/0
VT-SR2-1X/0-60
VT-SR7-1X/0/VT5005-1X/
VT11010-1X/
VT11073-1X
VT11031-1X/
VT11030-1X
VT11078-2X
VT11004-1X/
VT11013-1X
VT11021-1X/
VT11007-1X/
VT11016-1X/
VT-SR41-1X/1/2
VT-VSPD-1-2X/V0/0-0-1
VT11005-1X/
VT11032-1X/
VT11033-1X/
VT11037-1X/
VT5007-1X/
VT11550-2X/
VT16000-3X
VT13477-2X/3
VT11554-2X/
VT12323-2X/
VT11023-1X
VT-MRPA2-2-1X/V0/0
VT11008-1X
VT-MRPA2-1-1X
VT-MSPA1-50-1X
VT-MSPA1-1-1X/V0/
VT-MACAS-500-10/VO/I
VT-MSPA1-50-1X/V001
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VT5008-1X/
VT13000-1X/
VT-VRPA1-51-1X
VT5013-3X/R5E
VT5014-3X/R1E
VT12321-2X
VT5014-3X/R5E
VT5015-3X/R5E
VT1610-3X/
VT12270-1X/
VT1516-1X/
VT12427-1X/
VT5007S-1X/R5
VT11080-1X
VT-VRPA1-52-1X/
VT11009-1X
VT13477-2X/3
VT5001S2X/R5E
VT5003-4X/R1E
VT-VSPA1-50-1X
VT-VSPA1-51-1X
VT-VSPA1-52-1X
1） 梭阀 ——相当于两个单向阀组合的阀
具有逻辑"或门"功能.在逻辑回路和程序控制回路中广泛运用,在手动---自动回路的转换上常用。
因梭阀在换向过程中存在路路通过程，因此当某一接口进气量或排气量非常小的时候，阀的前后不能产生使阀正常换向的压力差，使阀不能完全换向而中途停止，造成阀的动作失灵。所以在使用时因注意，不要在某一接口处采用变径接头造成通路过小。
2）双压阀 与门功能
3) 快速排气阀
作用：是为了加快汽缸运动速度作快速排气的。
在给定条件下工作地汽缸杀毒很大程度上取决于控制阀的大小，如需要提高速度（尤其是需要提高单向速度时），可安装一个快速排气阀，而不必承担大型控制阀的费用。
滑阀式换向阀
（1）换向阀的结构和工作原理
阀体：有多级沉割槽的圆柱孔
结构〈
阀芯：有多段环行槽的圆柱体
分类：
二位
按工作位置数分 < 三位 位：阀心相对于阀体的工作位置数。
四位
二通 按通路数分 < 三通 通: 阀体对外连接的主要油口数
四通 （不包括控制油和泄漏油口）
五通
电磁换向阀
液动换向阀
按控制方式分 < 电液换向阀
机动换向阀
手动换向阀
图形符号含义：
1 位——用方格表示，几位即几个方格
2 通——↑ 不通—— ┴ 、┬ 箭头首尾和堵截符号与一个方格有几个交
点即为几通。
3 油口有固定方位和含义，p——进油口(左下）， T——回油口（右下） ,
A.B——与执行元件连接的工作油口（左、右上）。
4 弹簧——W、M，画在方格两侧
二位阀，靠弹簧的一格。
5 常态位置 〈 原理图中，油路应该连接在常态位置 三位阀，中间一格。
滑阀的中位机能
滑阀机能：换向阀处于常态位置时，阀中各油口的连通方式，对三位阀即中间位置各
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R900717924 LFA16DZWB2-7X/210
R900978277 LFA16DZWB2-7X/210X
R901075025 LFA16DZWB2-7X/210XY
R900927159 LFA25DZ2-7X/210
R901231597 LFA25DZ2-7X/210X
R901136656 LFA25DZ2-7X/210Y
R900947087 LFA25DZ2-7X/210XY
R901247558 LFA25DZ2-7X/315Y
R900928442 LFA25DZWA2-7X/210XY
R900732637 LFA25DZWB1-7X/210X
R900731443 LFA25DZWB1-7X/210XY
R901225426 LFA25DZWB1-7X/315X
R900772292 LFA25DZWB1-7X/315XY
R901020964 LFA25DZWB1-7X/350X
R900717925 LFA25DZWB2-7X/210
R900942084 LFA25DZWB2-7X/210X
R901075022 LFA25DZWB2-7X/210XY
R900731996 LFA25DZWB2-7X/315
R901164645 LFA25DZWB2-7X/315V
R900741593 LFA25DZWB2-7X/315XY
R901082028 LFA32DZ1-7X/210
R901137682 LFA32DZ1-7X/210Y
R901026847 LFA32DZ2-7X/210
R900760245 LFA32DZ2-7X/210Y
R900962917 LFA32DZ2-7X/210XY
R900951921 LFA32DZ2-7X/315X
R901110009 LFA32DZ2-7X/350XY
R901030330 LFA32DZWA2-7X/210X
R901042117 LFA32DZWA2-7X/210XY
R900948505 LFA32DZWA2-7X/315
R900966065 LFA32DZWA2-7X/315X
R901044179 LFA32DZWA2-7X/315Y
R900758113 LFA32DZWB1-7X/315
R901225427 LFA32DZWB1-7X/315X
R900758844 LFA32DZWB1-7X/315XY
R901020956 LFA32DZWB1-7X/350X
R900943743 LFA32DZWB2-7X/210X
R900728454 LFA32DZWB2-7X/210Y
R901046191 LFA32DZWB2-7X/210XY
R901022092 LFA32DZWB2-7X/315X
R900742524 LFA40DZ2-7X/210X
R900956844 LFA40DZ2-7X/210XY
R900961081 LFA40DZ2-7X/315
R901215682 LFA40DZ2-7X/315Y
R901072242 LFA40DZ2-7X/350Y
R900965656 LFA40DZWA2-7X/315
R901045576 LFA40DZWA2-7X/315Y
R900974768 LFA40DZWB2-7X/210XY
R901229351 LFA50DZ2-7X/210Y
R901225859 LFA50DZ2-7X/210XY
R900739564 LFA50DZ2-7X/315Y
R901026947 LFA50DZ2-7X/315XY
R901045577 LFA50DZWA2-7X/315Y
油口的连通方式，所以称中位机能。
