REXROTH液控单向阀SV20PA1-42/V，德国力士乐全新原装进口，质量保证，现货特价销售；

上海韦米机电设备有限公司
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本公司主营品牌：博世力士乐（BOSCH-REXROTH）及安沃驰AVENTICS、迪普马DUPLOMATIC、爱尔泰克AIRTEC、本特利Bently、贝加莱B&R、世格ASCO、阿托斯ATOS、派克。威格士。

先导溢流阀的主阀上腔压力，是由先导阀加于控制的。如果先导阀正常工作，即主阀上腔有先导阀规定的压力，则整个溢流阀就会在系统压力到达调定压力时其主阀口打开一定的开度，一方面能将系统多余流量流回油箱，另一方面又能维持系统的压力为先导阀的调定值。可见，先导阀主要管压力，主阀服从先导阀的领导，在先导阀动作时将主阀口开到合适大小，正好将多余流量流出去，又不影响系统压力。

REXROTH液控单向阀SV20PA1-42/V

力士乐单向阀 R900494086 SV 6 PB1-6X/ 
力士乐单向阀 R900593008 SV 6 PB1-6X/V 
力士乐单向阀 R900589253 SV 6 PB2-6X/ 
力士乐单向阀 R900516497 SV 6 PB2-6X/V 
力士乐单向阀 R900598166 SV 6 PB3-6X/ 
力士乐单向阀 R900597481 SV 6 PB3-6X/V 
力士乐单向阀 R900586840 SV 6 PB4-6X/ 
力士乐单向阀 R900247185 SV 6 PB4-6X/V 
力士乐单向阀 R900483368 SV10GA1-4X/ 
力士乐单向阀 R900465776 SV10GA1-4X/V
力士乐单向阀 R900455015 SV10GA2-4X/
力士乐单向阀 R900481120 SV10GA2-4X/V
力士乐单向阀 R900402853 SV10GA3-4X/ 
力士乐单向阀 R900032320 SV10GA3-4X/V 
力士乐单向阀 R900596177 SV10GA4-4X/ 
力士乐单向阀 R900509845 SV 10 GA4-4X/V 
力士乐单向阀 R900453511 SV10GB1-4X/
力士乐单向阀 R900442169 SV10GB1-4X/V 
力士乐单向阀 R900464954 SV10GB2-4X/ 
力士乐单向阀 R900509453 SV10GB2-4X/V
力士乐单向阀 R900403533 SV 10 GB3-4X/ 
力士乐单向阀 R900455086 SV 10 GB4-4X/ 
力士乐单向阀 R900509610 SV 10 GB4-4X/V 
力士乐单向阀 R900483369 SV10PA1-4X/
力士乐单向阀 R900463364 SV10PA1-4X/V
力士乐单向阀 R900451042 SV 10 PA2-4X/ 
力士乐单向阀 R900403578 SV10PA2-4X/V
力士乐单向阀 R900459915 SV 10 PA3-4X/ 
力士乐单向阀 R900466324 SV 10 PA3-4X/V 
力士乐单向阀 R900582637 SV 10 PA4-4X/ 
力士乐单向阀 R901114401 SV 10 PA4-4X/V 
力士乐单向阀 R900467724 SV 10 PB1-4X/ 
力士乐单向阀 R900423202 SV10PB1-4X/V
力士乐单向阀 R900403672 SV 10 PB2-4X/ 
力士乐单向阀 R900582578 SV 10 PB2-4X/V 
力士乐单向阀 R900464707 SV 10 PB3-4X/ 
力士乐单向阀 R901098930 SV 10 PB3-4X/V 
力士乐单向阀 R900505678 SV 10 PB4-4X/ 
力士乐单向阀 R900500295 SV 10 PB4-4X/V 
力士乐单向阀 R900587549 SV 15 GA1-4X/ 
力士乐单向阀 R900500841 SV 15 GA1-4X/V 
力士乐单向阀 R900501980 SV 15 GA2-4X/ 
力士乐单向阀 R900501010 SV 15 GA2-4X/V 
力士乐单向阀 R900502709 SV 15 GA3-4X/ 
力士乐单向阀 R900035312 SV 15 GA3-4X/V 
力士乐单向阀 R900203833 SV 15 GA4-4X/ 
力士乐单向阀 R900224092 SV 15 GA4-4X/V 
力士乐单向阀 R900501333 SV 15 GB1-4X/ 
力士乐单向阀 R901007605 SV 15 GB1-4X/V 
力士乐单向阀 R900599814 SV 15 GB2-4X/ 
力士乐单向阀 R900509516 SV 15 GB2-4X/V 
力士乐单向阀 R900520859 SV 15 GB3-4X/ 
力士乐单向阀 R901050475 SV 15 GB3-4X/V 
力士乐单向阀 R900503588 SV 15 GB4-4X/ 
力士乐单向阀 R900080297 SV 15 GB4-4X/V 
力士乐单向阀 R900587550 SV 20 GA1-4X/ 
力士乐单向阀 R900500292 SV 20 GA1-4X/V 
力士乐单向阀 R900500216 SV 20 GA2-4X/ 
力士乐单向阀 R900053412 SV 20 GA2-4X/V 
力士乐单向阀 R900599639 SV 20 GA3-4X/ 
力士乐单向阀 R900511197 SV 20 GA4-4X/ 
力士乐单向阀 R900511371 SV 20 GA4-4X/V 

REXROTH液控单向阀SV20PA1-42/V

浅析先导式溢流阀与直动型溢流阀的区别
溢流阀可分为直动型和先导式两类。直动型溢流阀是作用在阀芯上的主油路液压力与调压弹簧力直接相平衡的溢流阀。根据阀口和测压面结构形式不同，形成三种基本结构。
先导式溢流阀：主阀弹簧主要用于克服阀芯的摩擦力，弹簧刚度小。当溢流量变化引起主阀弹簧压缩量变化时，弹簧力变化较小，因此阀进口压力变化也较小。调压精度高，广泛应用于高压、大流量系统。
溢流阀的阀芯在移动过程中要受到摩擦力的作用，阀口开大和关小时的摩擦力方向刚好相反，使溢流阀开启时的特性与关闭时的特性产生差异。

REXROTH液控单向阀SV20PA1-42/V

R900403533 SV 10 GB3-4X/
R900403578 SV 10 PA2-4X/V
R900403579 SL 10 PA4-4X/V
R900403624 DR 10-5-4X/100YM
R900403630 LC 125 A20E2X/
R900403672 SV 10 PB2-4X/
R900403675 ZDR 10 DB1-5X/150YM
R900403680 4WMR 6 Y5X/
R900403681 3WMR 6 B5X/SO329
R900403687 ZDR 6 DP2-4X/25YM W99
R900403701 DBDH 10 G1X/100V
R900403795 SL 10 PB1-4X/J
R900403851 ZDR 6 DP2-4X/150YM SO43
R900403926 DBGT-1X/315E1
R900403980 DBDS 10 K1X/100J
R900403981 DBDS 30 K1X/100J
R900403999 S 52 P0-1X/
R900404038 DBDS 30 K1X/315J
R900404188 ERSATZTEIL TH 7 L10/BETAETIGUNG
R900404191 ERSATZTEIL TH 7 N10/BETAETIGUNG
R900404193 ERSATZTEIL TH 7 Q10/BETAETIGUNG
R900404194 ERSATZTEIL TH 7 A10/BETAETIGUNG
R900404197 ERSATZTEIL TH 7 G10/BETAETIGUNG
R900404198 ERSATZTEIL TH 7 H10/BETAETIGUNG
R900404199 ERSATZTEIL TH 7 J10/BETAETIGUNG
R900404200 ERSATZTEIL TH 7 K10/BETAETIGUNG
R900404262 DB 10 G2-4X/200 W65
R900404287 DZ 6 DP3-5X/210
R900404346 ZDR 6 DP2-4X/25YM/12
R900404347 DZ 6 DP1-5X/25Y/12
R900404627 DB 10 G2-4X/350 W65
R900404628 DB 15 G2-4X/350 W65
R900404664 4WMM 6 F5X/F
R900404670 ERSATZTEIL TH 7 .10/FEDERTELLER/18071801
R900404754 ZDR 6 DP2-4X/150YM/12
R900404770 4WMM 6 Y5X/F
R900404795 4WH 6 D5X//V
R900404798 DB 15 G2-4X/100 W65
R900404825 DR 10-4-4X/100Y
R900404826 DR 20-4-4X/100Y
R900404828 DR 20-5-4X/100Y
R900404886 ZDR 10 DP2-5X/75YM/5
R900404887 ZDR 10 DP2-5X/150YM/5
R900404920 DB 20 K1-1X/200XYU
R900405182 M-SR 15 KE00-1X/V
R900405329 DBDS 6 K1X/50 SO60
R900405380 4WMDA 6 D5X/F/V
R900405531 DB 20 G2-4X/350X W65
R900405532 DB 10 G2-4X/100 W65
R900405545 DBDS 30 K1X/25 SO60
R900405610 4WMD 6 G5X/F
R900405611 4WMM 6 E5X/F
R900405616 DBGT-1X/200E1
R900405727 1TH 7 Z10-1X/M01
R900405822 DR 6 DP1-5X/75YMV W5
R900405829 4WMM 6 W5X/
R900405901 DB 20 G1-4X/200 W65
R900405904 DR 20-5-4X/315Y
R900406014 W-S 16 G1-3X/
R900406017 DBDS 10 G1X/200 SO60
R900406176 DR 10-6-4X/100Y
R900406178 ZDR 10 DA1-5X/150Y
R900406225 ZDR 10 DA2-5X/150YM
R900406329 ZDR 10 DP3-5X/150YMV
R900406335 ZDR 10 DA3-5X/25Y
R900406490 2TH 7 P06-1X/M01
R900406615 ZDB 6 VA2-4X/50V
R900406620 MHDBV 40 K2-1X/420YVFL
R900406641 SL 10 PB1-4X/V
R900406647 4WH 32 D6X/
R900406648 4WH 32 G6X/
R900406650 4WMM 6 D5X/F/B10
R900406651 ZDR 10 DA2-5X/210Y
R900406666 ZDR 6 DP2-4X/75YMJ
R900406691 ZDR 6 DA2-4X/210YM SO43
R900407010 DB 10 DP2-1X/50
R900407066 4WMM 6 H5X//V
R900407106 DB 20 G2-4X/100 W65
R900407216 G 526/01
R900407334 ZDR 10 DA2-5X/25Y
R900407374 LF 32 DB2H15-2X/100
R900407389 DB 10-1-4X/200U W65
R900407394 Z2S 10-1-3X/
R900407424 Z2S 10A1-3X/
R900407434 Z2S 10B1-3X/
R900407439 Z2S 10-1-3X/V
R900407440 Z2S 10A1-3X/V
R900407449 DB 10 G1-4X/200 W65
R900407465 Z2S 10B1-3X/V
R900407515 HSA 06 A010-3X/M00
R900407525 4WMD 6 E5X/F/V
R900407575 DB 6 K3-4X/200YV
R900407610 HED 1 OA4X/50/12
R900407656 DZ 6 DP3-5X/150
R900407720 Z2S 16A1-5X/V
R900407721 DZ 6 DP2-5X/150YM
R900407800 DB 15 G1-4X/200 W65
R900407829 DB 20 G3-4X/200 W65
R900407969 DV 12 S1-1X/V
R900408046 4WMM 6 D5X/F/B12
R900408060 DB 6 K2-4X/100Y
R900408152 SV 62 PA2-1X/
R900408156 Z2DB 10 VD2-4X/315
R900408323 S 82 F1-1X/V
R900408340 ZDR 10 DB2-5X/150YM
R900408460 DR 10-4-4X/100YM
R900408463 MHDBH 40 K9-1X/420YM
R900408504 4WH 22 R7X/
R900408571 LCT 25 A40E2X/V
R900408584 DZ 6 DP3-5X/75
R900408596 SV 82 PA2-1X/
R900408654 DB 10 K2-4X/50Y
R900408738 DR 15 G5-4X/200YM
R900408872 LC 50 B00E2X/V
R900409093 4WH 22 E7X/
R900409132 DB 15 G1-4X/350 W65
R900409136 4WH 22 HD7X/
R900409181 MG 52 F1-1X/V
R900409328 H-4WH 25 HD6X/
R900409342 DR 20-5-4X/50Y
R900409450 4WMM 6 D5X/F/V
R900409465 DR 20 K6-1X/100YM
R900409466 DR 20 K6-1X/200YM
R900409515 ZDR 10 DA3-5X/210Y
R900409630 4WMM 6 M5X/F
R900409632 4WH22T7X/
R900409844 ZDB 6 VP2-4X/200V
R900409847 ZDB 6 VP2-4X/50V
R900409848 4WH 22 J7X/
R900409854 ZDB 6 VB2-4X/200V
R900409883 FMR 10 P64-1X/O W10
R900409885 FMR 15 P64-1X/O W10
R900409886 ZDB 6 VA2-4X/200V
R900409889 ZDB 6 VA2-4X/100V
R900409893 ZDB 6 VA2-4X/315V
R900409896 ZDB 6 VB2-4X/315V
R900409898 ZDB 6 VP2-4X/315V
R900409933 ZDB 6 VP2-4X/100V
R900409936 ZDB 6 VB2-4X/100V
R900409937 ZDB 10 VP2-4X/200V
R900409951 ZDB 10 VB2-4X/100V
R900409955 ZDB 10 VA2-4X/315V
R900409956 ZDB 10 VB2-4X/315V
R900409958 ZDB 10 VP2-4X/315V
R900409959 ZDB 10 VP2-4X/100V
R900409965 ZDR 6 DP1-4X/25YM
R900409966 ZDR 6 DA1-4X/75Y
R900409967 ZDR 6 DP1-4X/75YM
R900409981 ZDR 6 DA1-4X/150Y
R900410806 ZDR 6 DP1-4X/150YM
R900410808 ZDR 6 DA2-4X/25Y
R900410813 ZDR 6 DA2-4X/75Y
R900410815 ZDR 6 DA2-4X/75YM
R900410842 LC 125 A30E2X/
R900410849 ZDR 6 DA2-4X/150Y
R900410855 ZDR 6 DA2-4X/210Y
R900410858 ZDR 6 DP2-4X/210YM SO43
R900410864 ZDR 6 DA3-4X/75Y
R900410865 ZDR 6 DP3-4X/75YM
R900410873 ZDR 6 DP1-4X/75YM W13
R900410874 ZDR 6 DP7-4X/75YM
R900410875 ZDR 10 DP2-5X/75YM
R900410876 ZDR 10 DP2-5X/210YM
R900410877 ZDR 10 DP1-5X/75YM
R900410880 ZDR 10 DP2-5X/150YM
R900410884 ZDR 10 DA2-5X/150Y
R900410899 ZDR 10 DP2-5X/25YM
R900411035 4WMM 6 E5X//B08
R900411116 G 545/01
R900411117 G 546/01
R900411246 ZDR 10 DP1-5X/210YM
R900411247 ZDR 10 DP1-5X/150YM
R900411255 ZDR 10 DP3-5X/75YM
R900411259 ZDR 10 DA3-5X/75Y
R900411309 ZDR 10 VP5-3X/100YM
R900411311 ZDR 10 VP5-3X/200YM
R900411312 Z2DB 6 VC2-4X/200V
R900411314 Z2DB 6 VD2-4X/200V
R900411315 Z2DB 6 VC2-4X/100V
R900411317 Z2DB 6 VD2-4X/100V
R900411318 Z2DB 6 VC2-4X/315V
R900411357 Z2DB 6 VD2-4X/315V
R900411358 Z2DB 10 VD2-4X/200V
R900411413 Z2DB 10 VD2-4X/100V
R900411430 Z2DB 10 VC2-4X/315V
R900411462 Z2DB 10 VD2-4X/315V
R900411530 DB 20 G1-4X/350X W65
R900411647 H-4WH 25 G6X/
R900411748 ZDR 6 DA2-4X/25Y/12
R900411884 4WH 22 K7X/
R900411918 DBDS 6 K1X/315 SO60
R900411995 SV 6 PB1-6X/W64

REXROTH液控单向阀SV20PA1-42/V