上海韦米机电设备有限公司

ZDR6DP2-4X/75YM减压阀性能特点 德国博世力士乐REXROTH减压阀

性能

(1)调压范围：它是指减压阀输出压力P2的可调范围，在此范围内要求达到规定的精度。调压范围主要与调压弹簧的刚度有关。

(2)压力特性：它是指流量g为定值时，因输入压力波动而引起输出压力波动的特性。输出压力波动越小，减压阀的特性越好。输出压力必须低于输入压力—定值才基本上不随输入压力变化而变化。

(3)流量特性：它是指输入压力—定时，输出压力随输出流量g的变化而变化的持性。当流量g发生变化时，输出压力的变化越小越好。一般输出压力越低，它随输出流量的变化波动就越小

减压阀

减压阀是利用液流流过缝隙产生压力损失，使其出口压力低于进口压力的压力控制阀。

按调节要求不同，有定值减压阀，定差减压阀，定比减压阀。

定值减压阀的结构原理

减压阀起减压作用且保证出口压力为定值的条件是:当出口压力大于减压阀的调定压力，使其先导阀开启。

直动式减压阀

减压阀的功用与特点：

减压阀用在液压系统中获得压力低于系统压力的二次油路上

与溢流阀比较:

减压阀是出口压力控制，保证出口压力为定值;溢流阀是进口压力控制，保证进口压力为定值。

ZDR6DP2-4X/75YM减压阀性能特点 

直动式减压阀

ZDR 6 D

规格 6

组件系列 4X

较大工作压力 350 bar

较大流量 50 l/min

ZDR 型阀是一种采用叠加阀板设计的直动式减压阀，可限制次级油路的压力。用于降低系统压力。

减压阀主要由壳体 (1)、控制阀芯 (2)、压缩弹簧 (3)、调整类型 (4) 和可选单向阀组成。

通过调整类型 (4) 设置次级压力。

型号“A”

在初始位置时阀门处于打开状态。液压油可以不受限制地从通道 A? 流向通道 A?。同时，通道 A? 中的压力通过控制油路 (5) 作用于与压缩弹簧 (3) 相对的柱塞表面。如果通道 A? 中的压力超过在压缩弹簧 (3) 处设定的值，则控制阀芯 (2) 将被推离压缩弹簧 (3) 并移动到控制位置，从而使通道 A? 中的调定压力保持恒定。

通过控制油路 (5) 从通道 A? 内部提供控制信号和先导油。

当通道 A? 中的压力因作用于执行机构的外力而继续增加时，压力将迫使控制阀芯 (2) 更加远离压缩弹簧 (3)。

这样，通道 A? 将经由控制阀芯 (2) 上的控制边 (9) 和壳体 (1) 与油箱相连接。大量液压油将流回油箱，因此压力将不再增加。

弹簧腔 (7) 的泄漏油总是经由孔 (6) 流入通道 T (Y) 实现外部排出。

ZDR6DP2-4X/75YM减压阀性能特点型号

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力士乐REXROTH直动式减压阀DR 10 DP

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R900902914 DR10DP3-4X/210Y/12

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R901200427 DR10DP3-4X/210YV/12

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R900518920 DR10DP3-4X/25YV

R900502655 DR10DP3-4X/75Y

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R978914703 DR10DP7-4X/25YM/12

R978914704 DR10DP7-4X/75YM/12

力士乐REXROTH直动式减压阀ZDR 10 D

R900406178 ZDR10DA1-5X/150Y

R900905461 ZDR10DA1-5X/150Y/12

R900460490 ZDR10DA1-5X/150YM

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R901372559 ZDR10DA2-5X/150-80Y

R901362958 ZDR10DA2-5X/150-90Y

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R900424468 ZDR10DA2-5X/150Y/5

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R900406651 ZDR10DA2-5X/210Y

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R901140345 ZDR10DA2-5X/210YJ

R900428474 ZDR10DA2-5X/210YM

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R900441089 ZDR10DA2-5X/210YM/5

R900507984 ZDR10DA2-5X/210YMV

R900449433 ZDR10DA2-5X/210YV

R900553390 ZDR10DA2-5X/210YV/12

R900931306 ZDR10DA2-5X/25-20Y

R900407334 ZDR10DA2-5X/25Y

R900422337 ZDR10DA2-5X/25YM

R900967498 ZDR10DA2-5X/25YMV

R900424620 ZDR10DA2-5X/25YV

R900503067 ZDR10DA2-5X/315YMSO4

R901359199 ZDR10DA2-5X/75-50Y

R900438008 ZDR10DA2-5X/75Y

R900410886 ZDR10DA2-5X/75Y

R900587492 ZDR10DA2-5X/75Y/12

R900438756 ZDR10DA2-5X/75Y/5

R900946731 ZDR10DA2-5X/75Y/50

R900558992 ZDR10DA2-5X/75Y=LB

R900494714 ZDR10DA2-5X/75YM

R900429112 ZDR10DA2-5X/75YMW102

R900961380 ZDR10DA2-5X/75YM/12

R900441086 ZDR10DA2-5X/75YM/5

R901224140 ZDR10DA2-5X/75YMJV

R900517386 ZDR10DA2-5X/75YMV

R900447838 ZDR10DA2-5X/75YMV/5

R900481305 ZDR10DA2-5X/75YV

R900582685 ZDR10DA2-5X/75YV/12

R900465571 ZDR10DA2-5X/75YV/5

R900559285 ZDR10DA2-5X=150Y=PL

R900558991 ZDR10DA2-5X=75Y=LB

R900559286 ZDR10DA2-5X=75Y=PL

R900576389 ZDR10DA2-5X=75Y=PL

R900429570 ZDR10DA3-5X/150Y

R900464178 ZDR10DA3-5X/150YM

R901029515 ZDR10DA3-5X/150YMV

R901029529 ZDR10DA3-5X/150YV

R900409515 ZDR10DA3-5X/210Y

R900440715 ZDR10DA3-5X/210YM

R900548828 ZDR10DA3-5X/210YMV

R900599104 ZDR10DA3-5X/210YV

R900406335 ZDR10DA3-5X/25Y

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R900507928 ZDR10DA3-5X/25YV

R900411259 ZDR10DA3-5X/75Y

R900444257 ZDR10DA3-5X/75Y/12

R900426703 ZDR10DA3-5X/75YM

R900463935 ZDR10DA3-5X/75YMV

R900478216 ZDR10DA3-5X/75YV

R900518378 ZDR10DA7-5X/150Y

R901362530 ZDR10DA7-5X/150YMV

R900527748 ZDR10DA7-5X/210Y

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R900529852 ZDR10DA7-5X/75Y

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R901132813 ZDR10DA7-5X/75YV

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R900569428 ZDR10DB1-5X/150YMV

R900587050 ZDR10DB1-5X/210YM

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R900967499 ZDR10DB1-5X/210YMV

R900472873 ZDR10DB1-5X/25YM

R900975838 ZDR10DB1-5X/25YM/12

R900967501 ZDR10DB1-5X/25YMV

R900433058 ZDR10DB1-5X/75YM

R900967931 ZDR10DB1-5X/75YMV

R900408340 ZDR10DB2-5X/150YM

R900425586 ZDR10DB2-5X/150YM

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R900570282 ZDR10DB2-5X/150YMV

R900940458 ZDR10DB2-5X/150YMV/12

R901054580 ZDR10DB2-5X/210-150YM

R900443484 ZDR10DB2-5X/210YM

R900509346 ZDR10DB2-5X/210YM/12

R900587565 ZDR10DB2-5X/210YMV

R900902936 ZDR10DB2-5X/210YMV/12

R900426202 ZDR10DB2-5X/25YM

R900564929 ZDR10DB2-5X/25YM/12

R900967503 ZDR10DB2-5X/25YMV

R900411305 ZDR10DB2-5X/75Y

R900431509 ZDR10DB2-5X/75YM

R900583356 ZDR10DB2-5X/75YM/12

R900441104 ZDR10DB2-5X/75YM/5

R900946732 ZDR10DB2-5X/75YM/50

R900441887 ZDR10DB2-5X/75YMV

R900546351 ZDR10DB2-5X/75YMV/12

R900432183 ZDR10DB2-5X/75YMV/5

R900471974 ZDR10DB3-5X/150YM

R900935264 ZDR10DB3-5X/150YMV

R900481402 ZDR10DB3-5X/150YMV

R901352456 ZDR10DB3-5X/150YMV/12

R900519131 ZDR10DB3-5X/210YM

R900903756 ZDR10DB3-5X/210YMV

R900431392 ZDR10DB3-5X/25YM

R901029542 ZDR10DB3-5X/25YMV

R900472027 ZDR10DB3-5X/75YM

R900438729 ZDR10DB3-5X/75YMV

R900479940 ZDR10DB3-5X/75YMV/12

R900925917 ZDR10DB7-5X/150YM

R900921263 ZDR10DB7-5X/210YM

R900952406 ZDR10DB7-5X/75YM

R901173561 ZDR10DP1-5X/150-100YM

R901224405 ZDR10DP1-5X/150-130YM

R901177250 ZDR10DP1-5X/150-80YM

R900411247 ZDR10DP1-5X/150YM

R900458632 ZDR10DP1-5X/150YMSO43

R900513527 ZDR10DP1-5X/150YM/12

R900481947 ZDR10DP1-5X/150YM/5

R900508341 ZDR10DP1-5X/150YMV

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R901224413 ZDR10DP1-5X/210-160YM

R900411246 ZDR10DP1-5X/210YM

R901023629 ZDR10DP1-5X/210YM/12

R900430195 ZDR10DP1-5X/210YM/5

R900550022 ZDR10DP1-5X/210YMV

R900967504 ZDR10DP1-5X/25YM

R900482070 ZDR10DP1-5X/25YM

R900431839 ZDR10DP1-5X/25YMSO43

R900433354 ZDR10DP1-5X/25YM/5

R900955566 ZDR10DP1-5X/25YMJ

R900432179 ZDR10DP1-5X/25YMV

R900410877 ZDR10DP1-5X/75YM

R900563697 ZDR10DP1-5X/75YM/12

R900424467 ZDR10DP1-5X/75YM/5

R900509641 ZDR10DP1-5X/75YMJ

R900450298 ZDR10DP1-5X/75YMV

R900437311 ZDR10DP1-5X/75YMV/5

R901367657 ZDR10DP1-5X=25YM

R900959223 ZDR10DP2-5X/150-100YM

R901376332 ZDR10DP2-5X/150-100YMV

R901153180 ZDR10DP2-5X/150-120YM

R901086389 ZDR10DP2-5X/150-75YM

R901359137 ZDR10DP2-5X/150-80YM

R901397083 ZDR10DP2-5X/150-85YM

R901359069 ZDR10DP2-5X/150-90YM

R901402821 ZDR10DP2-5X/150P124YMVSO30

R901402819 ZDR10DP2-5X/150P78YMVSO30

R900410880 ZDR10DP2-5X/150YM

R987014313 ZDR10DP2-5X/150YMRE-765452-4-0

R900584329 ZDR10DP2-5X/150YMSO113

R900582108 ZDR10DP2-5X/150YM/12

R900404887 ZDR10DP2-5X/150YM/5

R900949066 ZDR10DP2-5X/150YM=LB

R900582743 ZDR10DP2-5X/150YMJ

R900431772 ZDR10DP2-5X/150YMV

R900548552 ZDR10DP2-5X/150YMV/12

R901177503 ZDR10DP2-5X/210-140YM

R901086386 ZDR10DP2-5X/210-150YM

R901402820 ZDR10DP2-5X/210P162YMVSO30

R900410876 ZDR10DP2-5X/210YM

R983038145 ZDR10DP2-5X/210YMIN010

R900580213 ZDR10DP2-5X/210YMSO15

R987063431 ZDR10DP2-5X/210YMTS10AQ

R900582564 ZDR10DP2-5X/210YM/12

R900401236 ZDR10DP2-5X/210YM/5

R987009794 ZDR10DP2-5X/210YM/RE/1643-4-0

R900502985 ZDR10DP2-5X/210YMJ

R900487690 ZDR10DP2-5X/210YMV

R900548551 ZDR10DP2-5X/210YMV/12

R901362985 ZDR10DP2-5X/25-10YM

R900742260 ZDR10DP2-5X/25P20YM

R900410899 ZDR10DP2-5X/25YM

R900588150 ZDR10DP2-5X/25YMW102

R900560882 ZDR10DP2-5X/25YM/12

R900911334 ZDR10DP2-5X/25YM/50

R900915439 ZDR10DP2-5X/25YMJ

R901223944 ZDR10DP2-5X/25YMJV

R900481889 ZDR10DP2-5X/25YMV

R901154579 ZDR10DP2-5X/75-20YMV

R901107193 ZDR10DP2-5X/75-40YM

R901355799 ZDR10DP2-5X/75-50YM

R901325605 ZDR10DP2-5X/75-50YMV

R901374974 ZDR10DP2-5X/75-75YM

R901374987 ZDR10DP2-5X/75-75YMV

R901402818 ZDR10DP2-5X/75P69YMVSO30

R900504217 ZDR10DP2-5X/75YSO30

R900410875 ZDR10DP2-5X/75YM

R900432835 ZDR10DP2-5X/75YMW27

R900411307 ZDR10DP2-5X/75YMW27

R900513528 ZDR10DP2-5X/75YM/12

R900404886 ZDR10DP2-5X/75YM/5

R900946733 ZDR10DP2-5X/75YM/50

R900580985 ZDR10DP2-5X/75YMJ

R901223987 ZDR10DP2-5X/75YMJV

R900429511 ZDR10DP2-5X/75YMV

R983047193 ZDR10DP2-5X/75YMVIN010

R900910869 ZDR10DP2-5X/75YMV/12

R900425631 ZDR10DP2-5X/75YMV/5

R900576594 ZDR10DP2-5X=210YM

R900559338 ZDR10DP2-5X=75YM=PL

R900588912 ZDR10DP3-5X/10YMSO21

R900493965 ZDR10DP3-5X/150YM

R901027567 ZDR10DP3-5X/150YM/12

R900406329 ZDR10DP3-5X/150YMV

R900401090 ZDR10DP3-5X/210YM

R900520650 ZDR10DP3-5X/210YMV

R900481806 ZDR10DP3-5X/25YM

R900591106 ZDR10DP3-5X/25YMV

R900411255 ZDR10DP3-5X/75YM

R900411251 ZDR10DP3-5X/75YMSO130

R900598287 ZDR10DP3-5X/75YMSO119

R900436478 ZDR10DP3-5X/75YMW102

R900444258 ZDR10DP3-5X/75YM/12

R900469324 ZDR10DP3-5X/75YM/5

R900423004 ZDR10DP3-5X/75YMV

R900459439 ZDR10DP3-5X/75YMV/12

R900431999 ZDR10DP7-5X/150YM

R900786712 ZDR10DP7-5X/150YMV

R900590408 ZDR10DP7-5X/210YM

R901048538 ZDR10DP7-5X/210YMV

R900948244 ZDR10DP7-5X/25YM

R901016846 ZDR10DP7-5X/25YMV

R900590407 ZDR10DP7-5X/75YM

R901003180 ZDR10DP7-5X/75YMV

R900973525 ZDR10DP7-5X/75YMV/12

R983038140 ZDR10DP1-5X/150YMIN010

R983038141 ZDR10DP1-5X/210YMIN010

R983038138 ZDR10DP1-5X/25YMIN010

R983038139 ZDR10DP1-5X/75YMIN010

R983040209 ZDR10DP2-5X/100YMIN010

R983038144 ZDR10DP2-5X/150YMIN010

R983038146 ZDR10DP2-5X/150YMVIN010

R983038147 ZDR10DP2-5X/210YMVIN010

R983038147 ZDR10DP2-5X/210YMVIN010

活塞式减压阀该类型的减压阀集两种阀―导阀和主阀―于一体。导阀的设计与直接作用式减压阀类似。来自导阀的排气压力作用在活塞上，使活塞打开主阀。如果主阀较大，无法直接打开时，这种设计就会利用入口压力打开主阀。因此，这种类型的减压阀，与直接作用式减压阀相比，在相同的管道尺寸下，容量和较好度（ /-5%）更高。与直接作用式减压阀相同的是，减压阀内部感知压力，无须外部安装传感线。