ZDB10VA2-4X/200V力士乐溢流阀

ZDB10VA2-4X/200V力士乐溢流阀 德国博世力士乐REXROTH溢流阀 电磁方向阀

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ZDB10VA2-4X/200V力士乐溢流阀

DBD 类型的溢流阀是直接操作式座阀。

它们用于限制系统压力。

这些阀门的基本组成部件为：套筒（1），弹簧（2），带阻尼

活塞的提升阀（3）（压力等级 25 到 400 bar）或滚珠（4）

（压力等级 630 bar）以及调节元件（5）。系统压力可由调节

元件（5）不断地改变。弹簧（2）将提升阀（3）或滚珠（4）

按压到其座上。通道 P 与系统连接。系统中的主要压力作用于

提升阀区域（或滚珠）。

如果通道 P 中的压力上升并超过弹簧（2）上设定的值，则提

升阀（3）或滚珠（4）背向弹簧（2）打开。液压油现在可以

从通道 P 流入通道 T。提升阀（3）的位移受到凸起（6）的

限制。

为了在整个压力范围上得到良好压力设置，将整个压力范围再

分为了 7 个压力等级。一个压力等级对应一个特定的弹簧，该

弹簧可用于设置较大工作压力。

ZDB10VA2-4X/200V力士乐溢流阀

溢流阀是一种液压压力控制阀。在液压设备中主要起定压溢流作用，稳压，系统卸荷和安全保护作用。 　定压溢流作用：在定量泵节流调节系统中，定量泵提供的是恒定流量。当系统压力加大时，会使流量需求减小。此时溢流阀开启，使多余流量溢回油箱，保证溢流阀进口压力，即泵出口压力恒定（阀口常随压力波动开启）。 　　

稳压作用：溢流阀串联在回油路上，溢流阀产生背压运动部件平稳性增加。 　　

系统卸荷作用：在溢流阀的遥控口串接溢小流量的电磁阀，当电磁铁通电时，溢流阀的遥控口通油箱，此时液压泵卸荷。溢流阀此时作为卸荷阀使用。 　　

安全保护作用：系统正常工作时，阀门关闭。只有负载超过规定的较限（系统压力超过调定压力）时开启溢流，进行过载保护，使系统压力不再增加（通常使溢流阀的调定压力比系统较高工作压力高10%～20%）。

 　　

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先导式溢流阀有一个远程控制口Ｋ，如果将K口用油管接到另一个远程调压阀（远程调压阀的结构和溢流阀的先导控制部分一样），调节远程调压阀的弹簧力，即可调节溢流阀主阀芯上端的液压力，从而对溢流阀的溢流压力实现远程调压。但是，远程调压阀所能调节的较高压力不得超过溢流阀本身导阀的调整压力。当远程控制口K通过二位二通阀接通油箱时，主阀芯上端的压力接近于零，主阀芯上移到较高位置．阀口开得很大。由于主阀弹簧较软，这时溢流阀ｐ口处压力很低,系统的油在低压下通过溢流阀流回油箱，实现卸荷。

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R900460358 ZDB10VP3-4X/50

R900560613 ZDB10VP3-4X/50V

R901136399 ZDB10VP3-4X/80V

R900441130 ZDB10VP7-4X/100

R900513706 ZDB10VP7-4X/100V

R900580733 ZDB10VP7-4X/200

R900562255 ZDB10VP7-4X/200V

R900565406 ZDB10VP7-4X/315

R900550125 ZDB10VP7-4X/315V

R900967531 ZDB10VT1-4X/100

R900594382 ZDB10VT1-4X/100V

R900967532 ZDB10VT1-4X/200

R900967529 ZDB10VT1-4X/200V

R900967921 ZDB10VT1-4X/315

R900967922 ZDB10VT1-4X/315V

R900967530 ZDB10VT1-4X/50

R900472791 ZDB10VT1-4X/50

R900967528 ZDB10VT1-4X/50V

R900474291 ZDB10VT1-4X/50V

R900967533 ZDB10VT2-4X/100

R900442704 ZDB10VT2-4X/100V

R900967534 ZDB10VT2-4X/200

R900593768 ZDB10VT2-4X/200V

R900967924 ZDB10VT2-4X/315

R900505827 ZDB10VT2-4X/315V

R900428936 ZDB10VT2-4X/50

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R900435816 ZDB10VT2-4X/50VSO30

R900506267 ZDB10VT2-4X/50VSO43

R900587512 ZDB10VT3-4X/100V

R900455615 ZDB10VT3-4X/50V

R900554170 ZDB10VT3-4X/50V

R900706120 ZDB10VT7-4X/50V

R978854311 ZDB10VP2-4X/200VSO43A-481

力士乐REXROTH先导式溢流阀DB.K

R901133623 DB10K1-4X/100-40YV

R901175318 DB10K1-4X/100-90YV

R900511013 DB10K1-4X/100Y

R900594111 DB10K1-4X/100YV

R900425806 DB10K1-4X/200Y

R900432721 DB10K1-4X/200YV

R900443353 DB10K1-4X/315Y

R900438122 DB10K1-4X/315YV

R900472682 DB10K1-4X/50Y

R900472621 DB10K1-4X/50YV

R901040419 DB10K2-4X/100-030Y

R901040159 DB10K2-4X/100-040Y

R901040175 DB10K2-4X/100-060Y

R901073210 DB10K2-4X/100-070Y

R900902171 DB10K2-4X/100P060YV

R901206282 DB10K2-4X/100P070Y

R900964429 DB10K2-4X/100P070YV

R900904826 DB10K2-4X/100P080Y

R900700669 DB10K2-4X/100XY

R900430681 DB10K2-4X/100Y

R900520666 DB10K2-4X/100YJ5V

R900909848 DB10K2-4X/100YMT

R900453240 DB10K2-4X/100YV

R901135795 DB10K2-4X/160YV

R901148473 DB10K2-4X/200-040Y

R901031035 DB10K2-4X/200-095Y

R901025661 DB10K2-4X/200-100YV

R901364919 DB10K2-4X/200-105Y

R900776927 DB10K2-4X/200-130YV

R901018489 DB10K2-4X/200-140YV

R901203917 DB10K2-4X/200-150XY

R901114677 DB10K2-4X/200-150YV

R901073184 DB10K2-4X/200-160Y

R900970815 DB10K2-4X/200-180Y

R900748426 DB10K2-4X/200-180YV

R900722688 DB10K2-4X/200-190YV

R901268891 DB10K2-4X/200P180Y

R900525510 DB10K2-4X/200XY

R900481084 DB10K2-4X/200Y

R900580098 DB10K2-4X/200YJ5

R900517802 DB10K2-4X/200YJ5V

R900438123 DB10K2-4X/200YV

R900786779 DB10K2-4X/315-150Y

R901138760 DB10K2-4X/315-205Y

R900786785 DB10K2-4X/315-210Y

R901052955 DB10K2-4X/315-215Y

R901230236 DB10K2-4X/315-220YV

R900786784 DB10K2-4X/315-225Y

R901340855 DB10K2-4X/315-235YV

R901020305 DB10K2-4X/315-245Y

R901230233 DB10K2-4X/315-250YV

R901310140 DB10K2-4X/315-255YV

R901371309 DB10K2-4X/315-300Y

R901350402 DB10K2-4X/315-300YV

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R901364565 DB10K2-4X/315P270YV

R901268537 DB10K2-4X/315P300Y

R901015822 DB10K2-4X/315XY

R900422257 DB10K2-4X/315Y

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R900438126 DB10K2-4X/315YV

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R900451438 DB10K2-4X/350Y

R900451440 DB10K2-4X/350YV

R901236102 DB10K2-4X/50-25YV

R900972578 DB10K2-4X/50P10YV

R900963987 DB10K2-4X/50P25YV

R901155027 DB10K2-4X/50P30YV

R900408654 DB10K2-4X/50Y

R900452212 DB10K2-4X/50YJ5

R900422817 DB10K2-4X/50YV

R900506505 DB10K2-4X/50YVSO43

R901135792 DB10K2-4X/80YV

R900580081 DB10K3-4X/100Y

R900580103 DB10K3-4X/100YV

R901135820 DB10K3-4X/160YV

R900950554 DB10K3-4X/200-160YV

R901031342 DB10K3-4X/200-180YV

R900440572 DB10K3-4X/200Y

R900428540 DB10K3-4X/200YV

R900580078 DB10K3-4X/315Y

R900438124 DB10K3-4X/315YV

R900427508 DB10K3-4X/50Y

R900432724 DB10K3-4X/50YV

R901135819 DB10K3-4X/80YV

R900784136 DB10K7-4X/100XY

R900443024 DB10K7-4X/100Y

R900511154 DB10K7-4X/100YV

R900580079 DB10K7-4X/200Y

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R900565420 DB10K7-4X/315Y

R900438125 DB10K7-4X/315YV

R901031340 DB10K7-4X/50Y

R900511171 DB10K7-4X/50YV

R900952482 DB6K1-4X/100-100YV

R900439549 DB6K1-4X/100Y

R900449408 DB6K1-4X/100YV

R900428324 DB6K1-4X/200Y

R900432726 DB6K1-4X/200YV

R900428602 DB6K1-4X/315Y

R900432727 DB6K1-4X/315YV

R900741286 DB6K1-4X/350XY

R900464724 DB6K1-4X/50Y

R900438025 DB6K1-4X/50YV

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R900786775 DB6K2-4X/100-025Y

R901026526 DB6K2-4X/100-030Y

R901030627 DB6K2-4X/100-065Y

R901076754 DB6K2-4X/100-080Y

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R900902401 DB6K2-4X/100-100YV

R901350834 DB6K2-4X/100-40Y

R901351250 DB6K2-4X/100-45Y

R901203578 DB6K2-4X/100-55Y

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R901270049 DB6K2-4X/100-75YV

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R901268542 DB6K2-4X/100P060Y

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R900049901 DB6K2-4X/100P100YV

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R900452406 DB6K2-4X/100YJSO2

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R900483440 DB6K2-4X/100YV

R901397137 DB6K2-4X/160-140YV

R901397148 DB6K2-4X/160P105YV

R901135781 DB6K2-4X/160YV

R901251831 DB6K2-4X/200-050YV

R901033058 DB6K2-4X/200-090Y

R900787997 DB6K2-4X/200-100Y

R901061983 DB6K2-4X/200-100YV

R901279037 DB6K2-4X/200-105Y

R901076749 DB6K2-4X/200-120Y

R900575579 DB6K2-4X/200-120YV

R901046433 DB6K2-4X/200-130Y

R901111267 DB6K2-4X/200-130YV

R900978315 DB6K2-4X/200-140Y

R900908204 DB6K2-4X/200-140YV

R900978381 DB6K2-4X/200-150Y

R900975676 DB6K2-4X/200-150YV

R901072631 DB6K2-4X/200-160Y

R900934939 DB6K2-4X/200-160YV

R901045312 DB6K2-4X/200-165Y

R900978322 DB6K2-4X/200-175Y

R900578372 DB6K2-4X/200-175YV

R901241788 DB6K2-4X/200-180Y

R900575578 DB6K2-4X/200-180YV

R901270047 DB6K2-4X/200-190Y

R901073181 DB6K2-4X/200-200Y

R901270052 DB6K2-4X/200-200YV

R900059341 DB6K2-4X/200P105YV

R901357045 DB6K2-4X/200P110Y

R900217146 DB6K2-4X/200P120YV

R901302084 DB6K2-4X/200P140Y

R901321641 DB6K2-4X/200P160Y

R901268539 DB6K2-4X/200P180Y

R900991544 DB6K2-4X/200P200Y

R900422238 DB6K2-4X/200Y

R901191339 DB6K2-4X/200YJ5

R900441112 DB6K2-4X/200YJ5V

R900552246 DB6K2-4X/200YMT

R900486196 DB6K2-4X/200YV

R901415371 DB6K2-4X/315-120YV

R900721014 DB6K2-4X/315-150YV

方向控制阀

类型:单向阀、换向阀

一、单向阀

类型:普通单向阀、液控单向阀

1、普通单向阀

作用:只允许油液沿一个方向流动，不允许油液反向倒流(起止回作用)

对单向阀的性能要求:

(1) 正向导通时，压力损失要小;

(2)反向截止时，密封性要好。

2、

液控单向阀

作用:

(1)起止回作用;

(2)必要时解除逆止，允许油液反向通过。

3、单向阀用途

(1)止回作用:安装在泵的出口，p.=0.3~0.5 bar

(2)作背压阀用:防止液压缸前冲或爬行，使系统作平稳。

(3)作锁紧装置用:起重机支腿、夹紧回路等。

(4)保持控制油路有必要的压力: Pr≥P液挖

(5)作复合阀使用:单向节流阀、单向顺序阀、单向减压阀、单向调速阀等。

(6)局部回路作安全阀使用: Ppr>P换热器正常工作的距力