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Rexroth博世力士乐比例阀工作原理及结构：减压阀出厂时，调节弹簧处于未压缩状态,此时主阀瓣和付阀瓣处于关闭状态,使用时按顺时针转动调节螺钉,压缩调节弹簧,使膜瓣移顶开付阀瓣,介质由a孔通过付阀座到b孔进入活塞上方,活塞在介质压力的作用下,向下移动推动主阀瓣离开主阀座,使介质流向阀后.同时由c孔进入膜片下方,当阀后压力超过调定压力时,推动膜片上移压缩调节弹簧,付阀瓣随之向关闭方向移动,使流入活塞上方的介质减小,压力也随之下降,此时的主阀瓣在主阀瓣弹簧力的推动上下移,使主阀瓣与主阀座的间隙减小,介质流量也随之减小,使阀后压力也随之下降到新的平衡,反之当阀后压力低于调定压力时,主阀瓣与主阀座的间隙增大,介质流量也随之增加,使阀后压力也随之增高达到新的平衡.
力士乐比例伺服阀体内的启闭件的开度来调节介质的流量，将介质的压力降低，同时借助阀后压力的作用调节启闭件的开度，使阀后压力保持在一定范围内，在进口压力不断变化的情况下，保持出口压力在设定的范围内，保护其后的生活生产器具。减压阀是气动调节阀的一个*配件，主要作用是将气源的压力减压并稳定到一个定值，以便于调节阀能够获得稳定的气源动力用于调节控制。按结构形式可分为膜片式、弹簧薄膜式、活塞式、杠杆式和波纹管式；按阀座数目可人为单座式和双座式；按阀瓣的位置不同可分为正作用式和反作用式。减压阀的输出压力较高或通径较大时，用调压弹簧直接调压，则弹簧刚度必然过大，流量变化时，输出压力波动较大，阀的结构尺寸也将增大。为了克服这些缺点，可采用先导式减压阀。
Rexroth力士乐比例伺服阀主要用于多泵并联使用时安装于水泵压出口，起限制水泵工作流量，防止停泵回流作用。该阀采用导阀，主阀构造，结构紧凑，重量较轻。该阀安装于水泵出口,在单泵启动和非全数设计工作泵工作时，对工作泵起限制流量作用，使泵在较高效率状态下工作；防止电动机在水泵低扬程、大流量、低效率时，发生过载现象；防止超额定电流烧电机现象的发生，同时起到一定的节能效果。其限流原理为：依据水泵的设计工况点扬程，导阀自动检测并控制水泵的实际工作扬程，以限制水泵的工作流量，限制电机的负载。该阀设定一个控制工作扬程，当水泵工作扬程低于控制扬程时阀门做关阀动作，使实际工作扬程加大；当水泵工作扬程大于设定扬程时阀门全开，阀门阻力极小。
BOSCH-Rexroth力士乐比例伺服阀用带通孔的塞体作为启闭件的阀门。塞体随阀杆转动，以实现启闭动作。通过旋转90度使阀塞上的通道口与阀体上的通道口相同或分开，实现开启或关闭的一种阀门。小型无填料的旋塞阀又称为“考克”。旋塞阀的塞体多为圆锥体(也有圆柱体)，与阀体的圆锥孔面配合组成密封副。旋塞阀是使用*的一种阀门，结构简单、开关迅速、流体阻力小。普通旋塞阀靠精加工的金属塞体与阀体间的直接接触来密封，所以密封性较差，启闭力大，容易磨损，通常只能用于低(不高于1兆帕)和小口径(小于100毫米)的场合。为了扩大旋塞阀的应用范围，已研制出许多新型结构。
上海维特锐现货表:
4WE6E6X/SG24N9K4/V 电磁阀
A10VS071DRS 32R-VPB22U99 电磁阀
S6A1.0 R900422881 电磁阀
ZDB6VA24X/315V 电磁阀
Z2S2215X R90043815 电磁阀
A4VS0125DR/30R-FPB13N00 R902438020 柱塞泵
0510625013 AZPF1X/019RCB20MB 齿轮泵
0510665330 齿轮泵
A10VSO18DFR1/31RVPA12K01 柱塞泵
4WE6C6X/EG24N9K4 R900561272 电磁阀
4WE10Q3X/CG24N9K4 电磁阀
DBDS6K1X/25 液压阀
MSR10KE05-1X R900344549 电磁阀
0510425009AZPF-1X-008RCB20MB 齿轮泵
M3SED10CK1X/350CG24N9K4 R900586685 电磁阀球阀
4WE10J3X/CG24N9K4 R900589988 电磁阀
LFA40EH27X/CA10DQMG24FX08 R901344477 电磁阀
ZDB6VP24X/315V 电磁阀
4WE10H3X/CG24N9K4 电磁阀
MSR15KE051X/R900345372 电磁阀
4WE10L3X/CG24N9K4 R900599646 电磁阀
DR10DP24X/150YM 电磁阀
DR6DP25X/75YM 电磁阀
4WE6M6X/EG24N9K4 电磁阀
4WE10E3X/CW230N9K4/V 电磁阀
SL10PA14X/V 电磁阀
ZDR10DP25X/150YM 压力阀
4WE6Y7X/HG24N9K4 R901089243 电磁阀
R900021267(Z31) 七芯插头
4WE6J6X/EW230N9K4/V R900911762 电磁阀
0510525009 AZPF-1X/011RCB20MB 齿轮泵
0510525312 齿轮泵
PVV1-1X036RA15DMB 液压泵
PVV4-1X/069RA15DMC 叶片泵
A4VS0180DR/30R-FPB13N00 R902437379 柱塞泵
R902160881 A2FO107/61R-PPB105 油泵
A4VSO71DR/10R-PPB13N00 R902423294 柱塞泵
0510425020 AZPF-10-008RRR20MB 柱塞泵
R910912007 A10VSO100DR/31R-PPA12N00 油泵
A4VSO250DR/30R-PPB13N00 R910974769 柱塞泵
0510112014 柱塞泵
4WREE6E162X/G24K31/A1V R900920567 比例阀
4WE6J7X/HG24N9K4 R901089241 电磁阀
4WEH16E7X/6EG24N9ETK4 电磁阀
R901000846 DBET6X/200G24K4V 比例溢流阀
MSR20KE051X 单向阀
Z2FS2283X/S2 R900443176 电磁阀
LFA32GWA-7X R900912708 插装电磁阀
R901086060 Z1S6T50-4X/V 电磁阀
0811404643 4WRPEH6C3B25P-2X/G24K0/A1M 比例阀
4WE6J6X/EW230N9K4 （R900908589） 电磁阀
R900410808 ZDR6DA2-4X/25Y 电磁阀
M3SEW6U3X/420MG24N9K4 R900566283 电磁阀
4WREE6E32-2X/G24K31/A1V R900907114 液压阀
R900422189 ZDB10VA24X/200V 电磁阀
4WRAE10E60-2X/G24N9K31/A1V R900558356 比例阀
Z1S10T13X/V 电磁阀
4WE10C33/CG24N9K4 R900593277 电磁阀
DBDS6P1X/315 溢流阀
S20P05-1X 单向阀
R900421222 SCA16CZ2X/M 压力补偿器
DBEM107X/100YG24K4M R901335402 比例阀
ZDB10VB1-4X/50V R900967522 溢流阀
ZDB10VB1-4X/200V R900595254 溢流阀
上海维特锐丁剑宇欢迎您的询价！
ZDB10VA2-4X-100V R900424537 溢流阀
Z2DB10VD2-4X/200V R900411358 液压阀
Z2DB6VD2-4X/200V R900411314 液压阀
ZDB6VA1-4X/100V R900507526 溢流阀
DBEME10-7X/100YG24K31A1M R901358181 溢流阀
R900467370 电磁阀
P901029967 DBETE-6X/100G24K31A1V 液压阀
4WE6D6X/EG24K4QMBG24 R900574632 电磁阀
ZDB10VA2-4X/315V R900409955 溢流阀
4WE10D5X/EG24N9K4/M R901278760 换向阀
R900954106 4WRE10W50-2X/G24K4/V 电磁阀
R900954107 4WRE10W75-2X/G24K4/V 比例方向阀
R900082899 插头
DB20-2-5X/200Y R900596528 液压阀
4WREE6V32-2X/G24K31/F1V R900926747 比例阀
M-SR25KE05-1X 电磁阀
M-SR30KE05-1X 电磁阀
Z2S16-3-5X R900412346 电磁阀
DBEM107X/315YG24K4M R9001335399 溢流阀
M3SEW6C3X/420MG24N9K4+Z4 R900566273 电磁阀
1827414900 电磁阀
5811290650 气动电磁阀
0821300860 气动元件
1829207040 气动元件
HE0524806 液压元件
DGMC3ATGWB41 电磁阀
DGMFN7YA2HB2H20 液压阀
R901000846力士乐*
换向阀：
4WE6M7X/HG24N9K4 4WE6HB7X/HG24N9K4 4WE6JA7X/HG24N9K4 4E6EA7X/HG24N9K4
4E6EB7X/HG24N9K4 4WE6EA6X/EG24N9K4 4WE6EB6X/EG24N9K4 4WE6HB6X/EG24N9K4
4WE6HA6X/EG24N9K4 4WEH16E7X/6HG24N9ETK4 4WEH16J7X/6HG24N9ETK4
4WEH16L7X/6HG24N9ETK4 4WEH16U7X/6HG24N9ETK4 4WEH16Y7X/6HG24N9ETK4
4WEH16D7X/6HG24N9ETK4 4WEH16E7X/6EG24N9ETK4 4WEH16J7X/6EG24N9ETK4
4WE6D62/EW230N9K4 4WE6E62/EW230N9K4 4WE6J62/EW230N9K4
4WE6D7X/HG24N9K4 4WE6C7X/HG24N9K4 4WE6E7X/HG24N9K4 4E6L7X/HG24N9K4 4WE6Y7X/HG24N9K4 4WE10C3X/CW230N9K4 4WE10C3X/CG24N9K4 4WE10D3X/CG24N9K4 4WE10D33/CG24N9K4 4WE10D3X/OFCG24N9K4 4WE10D33/OFCG24N9K4 4WE10D3X/CW230N9K4 4WE10D33/CW230N9K4 4WE10E3X/CG24N9K4 4WE10E33/CG24N9K4 4WE10E3X/CW230N9K4 4WE10E33/CW230N9K4 4WE10E3X/OFCG24N9K4 4WE10Y3X/CG24N9K4 4WE10Y33/CG24N9K4 4WE10Y3X/CW230N9K4 4WE10Y33/CW230N9K4 4WE10G3X/CG24N9K4 4WE10G33/CG24N9K4 4WE10G3X/CW230N9K4 4WE10G33/CW230N9K4 4WE10J3X/CG24N9K4 4WE10J3X/CG24N9K4/B10 4WE10J33/CG24N9K4 4WE10J3X/CW230N9K4 4WE10J33/CW230N9K4 4WE10M3X/CG24N9K4 4WE10M33/CG24N9K4 4WE10M3X/CW230N9K4 4WE10M33/CW230N9K4 4WE10U3X/CW230N9K4 4WE10L33/CG24N9K4 4WE10L33/CW230N9K4 4WE10EA3X/CG24N9K4 4WE10EA3X/CW230N9K4 4WE10EB3X/CG24N9K4 4WE10EB3X/CW230N9K4 4WE10F3X/CG24N9K4 4WEH10D4X/HG24N9K4 4WEH10E4X/HG24N9K4 4WE6E50/AG24NZ5L 4WE6E50B/AW220-50NZ4 4WE6E6X/OFEG24N9DKL 4WE6E50/AG24NE4 4WE6E61/EG24NZ5L 4WE6E5X/AG24N24 4WE6C61/EW230N9K4
4WE6A6X/EW230N9K4 4WE6A6X/EW220N9K4 4WE6A6XEW220N9K4 4WE6A6X/EW230N9K4
4WE6A6X/EW230N9K4 4WE6A6X/EW230N9K4 4WE6R73-6X/EG24N9K4/A12
3WE6A6X/EG24N9K4 3WE6A62/EG24N9K4 3WE6A6X/EW230N9K4 4WE6B61/EG24N9K4 4WE6D6X/EG24N9K4 4WE6D62/EG24N9K4 4WE6D6X/EW230N9K4 4WE6D62/EG220N9K4 4WE6D62/EW230N9K4 4WE6D6X/OFEG24N9K4
4WE6D6X/OFCG24N9Z5L 4WE6D6X/OFEG24N9K4/B18 4WE6D6X/OFSG24N9K4 4WE6E6X/EG24N9K4
4WE6E62/EG24N9K4 4WE6A6X/EW220N9K4 4WE6E6X/OFEG24N9K4 4WE6D6X/OFSG24N9K4 4WE6J6X/EG24N9K4 4WE6J6X/EW230N9K4 4WE6J6X/OFEG24N9K4 4WE6Y6X/EG24N9K4 4WE6Y6X/EW230N9K4 4WE6Y6X/OFEG24N9K4 4E6G6X/EG24N9K4 4WE6G6X/OFEG24N9K4 4WE6H6X/EG24N9K4 4WE6H6X/OFEG24N9K4 4WE6H6X/EW230N9K4 4WE6U6X/EG24N9K4 4WE6U62/EG24N9K4 4WE6U62/EG230N9K4 4WE6U62/EG230N9K4 4WE6L62/EG24N9K4 4WE10Y33/CG24N9K4 4WE10D33/CG24N9K4 4WE10C33/CG24N9K4 4WE10L33/CG24N9K4 4WE10U33/CG24N9K4 4WE10J33/CG24N9K4 4WE10E33/CG24N9K4 4WE10G33/CG24N9K4 4WE10H33/CG24N9K4 4WE6Y62/EW230N9K4 4WE6J62/EW230N9K4 4WE6G62/EW230N9K4 4WE6G62/EW110N9K4 4WE10D33/CW230N9K4 4WE10E33/CW230N9K4 4WE10J33/CG24N9K4 4WE10J33/CW230N9K4 4WE10H33/CW230N9K4 4WE10G33/CW230N9K4 4WE6E62/EG24N9K4 4WE6E62/EW230N9K4 4WE6E6X/EG24N9K4 4WE6E50/AW220NZ5L 4WE6E6X/SG24N9K4 4WE6E62/EG12N9K4 4WE6E6X/SG24N9K4 4WE6E6X/EW230N9K4 4WE6E6X/EG24N9K4+Z5L 4WE6E6X/EG24N9K4/V 4WE6E6X/EG24N9K4 4WE6E6X/BG24N9K4_5031339
4WE6E61B/CW220-5N9Z5L 4WE6E6X/AG24N24 4WE6E61B/AG24N9Z5L 4WE6E6X/EG24N9K4 4WE6E-5X/AG24NZ4 4WE6EA62/EG24N9K4/B10 4WE6E52/AG24NZ4 4WE6E61/EG24N9K4
电磁溢流阀：
DBW10B1-5X/200-6EG24N9K4 DBW10A1-5X/200-6EG24N9K4 DBW10B1-5X/315-6EG24N9K4
DBW10A1-5X/315-6EG24N9K4 DBW20B1-5X/315-6EG24N9K4 DBW20B1-5X/100-6EG24N9K4
DBW20B1-5X/315-6EG24N9K4 DBW20A1-5X/315-6EG24N9K4 DBW10B1-5X/200-6EW230N9K4
DBW20B1-5X/200-6EW230N9K4 M-3SED6UK1X/350CG205N9K4 M-3SED6UK1X/350CG24N9K4
M-3SED6CK1X/350CG24N9K4 M-2SEW6N3X/420MG205N9K4 M-3SEW6C3X/420MG24N9K4
M-3SEW6C3X/630MG24N9K4 M-3SEW6U3X/420MG24N9K4 M-3SEW6U3X/630MG24N9K4
电液换向阀：
0810050112 H-4WEH16E1X/6ZG24N9K4/Z 0810050113 H-4WEH16E1X/6ZG24N9EK4/Z
0810050134 H-4WEH16U1X/6ZG24N9ETK4/B08Z 0810050160 H-4WEH16EB1X/6ZG24K4/QM0G24/ZV
R900244202 4WEH16J7X/6EG24N9ES2K4/B10 R900245525 4WEH10E4X/6EG205N9ETSK4/B10
R900246842 H-4WEH25J6X/6EG24N9EK4/10B12 SO843 R900247509 4WEH22LB7X/6EG24N9EK4/B10
R900247589 4WEH16E42-7X/6EG24N9EK4/B10 R900247713 4WEH22HD7X/OF6EG24N9ETK4
R900248287 4WEH16J7X/6EW110N9ES2K4/B10 R900248848 4WEH16Y7X/6EG24N9ETK4/B10
R900248983 4WEH16EB7X/6EG24N9ETK4/B10 R900578288 4WEH10J4X/6EG24N9K4
R900608720 4WEH16E7X/6EG24N9K4/B10 R900617260 4WEH22D7X/6SG24N9ETK4/B10
R900617661 4WEH16J7X/6EG24NES2K4/B10V R900617764 H-4WEH25G6X/6SG24N9TK4
R900617804 4WEH16D7X/6SG24N9ETK4/B10 R900617851 4WEH16HD7X/OF6EG24N9K4/B10
R900618334 H-4WEH32HD6X/OF6EG24N9ETS2K4/B10D3 R900700894 4WEH16E7X/6EG24K4QM0G24/N05 SO746
R900701184 4WEH16H7X/6EG24N9ETK4/B10P4,5 R900702161 H-4WEH16G7X/6EW230N9ETSK4/B10P4,5D3
R900710599 4WEH16D7X/6EG24N9ETK4/B10D3V R900711896 4WEH16L7X/6EG24N9ETK4/B08
R900715328 4WEH10J4X/6EG24N9TK4/B10 R900717910 4WEH10J4X/6EG24N9ETK4/B06
R900718491 4WEH16J7X/6EG24N9ETS2K4/B10V R900723240 4WEH10E4X/6EG24NETK4/B10
R900727197 4WEH16E7X/6EG24N9ES2K4/B10 R900727342 4WEH22J7X/6EW230N9K4/B10D3
R900728043 H-4WEH25HD6X/OF6EG24N9ETK4/B10D3 R900728889 H-4WEH22Y7X/6EG24N9ES2K4/B10D3
R900728893 4WEH16HD7X/OF6EW230N9ETK4/B10V R900737154 4WEH22R7X/6EG24N9ETS2K4
R900739098 4WEH16U7X/6EG24N9ETK4/B10 R900740438 4WEH22J7X/6EG24N9ES2K4/B10V
R900744319 4WEH10G4X/6EG24N9ETK4/B10 R900744837 4WEH16D7X/6EW110N9TS2K4
R900747356 4WEH16J7X/6EG24N9EK4/B08P4,5 R900747381 4WEH16HD7X/OF6EG24N9EK4/B08P4,5
R900747382 4WEH22HD7X/OF6EG24N9EK4/B08P4,5 R900747704 4WEH22Q7X/6EG24N9K4
R900749396 4WEH16HD7X/O6EG24N9K4 R900750747 H-4WEH25E6X/6EW110N9SK4/B10D2
R900751327 4WEH22M7X/6EG24N9ETK4/B10D3 R900751779 4WEH32E6X/6EG24N9EK4/10B10
R900752588 4WEH16HD7X/OF6EW230N9ES2K4/B10 R900752824 Z4WEH10E63-5X/4KEG24N9ETK4
R900757127 H-4WEH32J6X/6EG24N9ES2K4/B10D3 R900758807 H-4WEH25J6X/6EG24N9ES2K4/B10D3
R900759005 4WEH16G7X/6EG24N9ETK4/B10 R900760284 4WEH22HD7X/OF6EG24N9ETS2DJL1/B10
R900760288 H-4WEH32J6X/6EG24N9ETS2DJL1/B10D3
R900760695 H-4WEH32HD6X/OF6EG24N9ETS2DJL1/B10D3 R900763132 4WEH10J4X/6EG24N9TK4
R900763991 4WEH32L6X/6SG24N9ETK4/B10 R900764834 4WEH16U7X/6SG24N9EK4/B10
R900766941 H-4WEH25U6X/6EG110N9ES2K4/B10D3 R900769118 H-4WEH25Y6X/6EG24N9ES2K4/B10D3
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