DB20-1-52/315溢流安全阀

DB20-1-52/315溢流安全阀 德国博世力士乐REXROTH溢流阀 压力控制阀 ****现货

我公司现货供应博世力士乐（BOSCH-REXROTH）、阿托斯ATOS、派克Parker、迪普马DUPLOMATIC、油研YUKEN;本特利bentley、贝加莱B&R、西门子、光洋KOYO，美国ASCO，美国PARKER派克 等系列进口产品 

DB20-1-52/315溢流安全阀

溢流阀的特点

先导阀和主阀阀芯分别处于受力平衡，其阀口都满足压力流量方程。阀的进口压力由两次比较得到，压力值主要由先导阀调压弹簧的预压缩量确定，主阀弹簀起复位作用。

通过先导阀的流量很小，是主阀额定流量的1%因此其尺寸很小，即使是高压阀，其弹簧刚度也不大。这样一来阀的调节性能有很大改善。

主阀芯开启是利用液流流经阻力孔形成的压力差。阻力孔一般为细长孔，孔径很小0=0.8~1.2mm,孔长I = 8~12mm,因此工作时易堵塞，一旦堵塞则导致主阀口常开无法调压。

溢流阀是压力控制阀。其作用主要是控制系统压力，以保护油泵和油路系统的安全及保持油路系统的压力恒定。通经为8毫米的溢流阀是一个小型的直接动作的溢流阀，可以和主溢流阀的遥控口连接，对主溢流阀实现远程压力调节。溢流阀的遥控口经换向阀和油箱连接时，可使油路卸荷。此时溢流阀起卸荷作用。溢流阀的遥控口串联换向阀和通经为8毫米的溢流阀时，可实现压力的多级控制。

DB20-1-52/315溢流安全阀

DB 型压力阀是一种先导式溢流阀。用于限制工作压力。

这些溢流阀 (DB) 主要由带主阀心 (3) 的主阀 (1) 以及带压力调节元件的先导控制阀 (2) 组成。

施加在通道 P 中的压力作用于主阀芯 (3)。同时，该压力通过配有喷嘴 (4) 和 (5) 的控制油路 (6) 和 (7) 施加于主阀芯 (3) 的弹簧负载侧和先导控制阀 (2) 中的滚珠 (8)。如果通道 P 中的压力超过弹簧 (9) 上设定的值，则滚珠 (8) 将背向弹簧 (9) 打开。相应的信号通过控制油路 (10) 和 (6) 从通道 P 由内部传出。此时主阀芯 (3) 弹簧负载侧的液压油通过控制油路 (7)、喷嘴孔 (11) 和滚珠 (8) 流入弹簧腔 (12)。从此处，液压油通过控制油路 (13) 从内部流入油箱（对于型号 DB …），或通过控制油路 (14) 从外部流入油箱（对于型号 DB …Y）。喷嘴 (4) 和 (5) 会导致主阀芯 (3) 出现压降，从而使通道 P 到通道 T 的连接打开。现在，液压油从通道 P 流到通道 T，同时维持设定的工作压力。

溢流阀可通过油口“X”(15) 卸载或切换为另一压力（第二个压力等级）。

DB20-1-52/315溢流安全阀

R900580773 DB20-1-3X/315X/12

R900384305 DB20-1-3X/315X/V/5

R900589603 DB20-1-5X/100

R900927837 DB20-1-5X/100B

R900597666 DB20-1-5X/100U

R900548972 DB20-1-5X/100UJ

R900904340 DB20-1-5X/100V

R901044543 DB20-1-5X/100X

R900532967 DB20-1-5X/100XU

R900501949 DB20-1-5X/100XY

R900538541 DB20-1-5X/100XYB

R900521488 DB20-1-5X/100XYV

R900501908 DB20-1-5X/100Y

R900537716 DB20-1-5X/100YB

R900521035 DB20-1-5X/100YU

R900546383 DB20-1-5X/120B

R900935203 DB20-1-5X/125B

R900948688 DB20-1-5X/150B

R901107073 DB20-1-5X/150E

R901084001 DB20-1-5X/150UE

R901354591 DB20-1-5X/160E

R901081863 DB20-1-5X/160X

R900713007 DB20-1-5X/170B

R900546384 DB20-1-5X/180VB

R901115973 DB20-1-5X/180VE

R900502117 DB20-1-5X/200

R900571768 DB20-1-5X/200/12

R900587379 DB20-1-5X/200B

R901000574 DB20-1-5X/200D

R900769418 DB20-1-5X/200E

R901084355 DB20-1-5X/200UD

R901045900 DB20-1-5X/200UV

R900921140 DB20-1-5X/200V

R900569125 DB20-1-5X/200VB

R901116179 DB20-1-5X/200VD

R900595978 DB20-1-5X/200X

R900562204 DB20-1-5X/200XB

R901192099 DB20-1-5X/200XV

R900517599 DB20-1-5X/200XY

R900532990 DB20-1-5X/200Y

R900914413 DB20-1-5X/200YB

R900784724 DB20-1-5X/200YD

R900784708 DB20-1-5X/200YE

R901028146 DB20-1-5X/220E

R900928862 DB20-1-5X/220XB

R900903978 DB20-1-5X/240XB

R901105130 DB20-1-5X/280YE

R900546370 DB20-1-5X/30XYB

R900587346 DB20-1-5X/315

R900504616 DB20-1-5X/315/12

R900903471 DB20-1-5X/315B

R901059048 DB20-1-5X/315E

R900743444 DB20-1-5X/315J

R900512862 DB20-1-5X/315U

R900596697 DB20-1-5X/315V

R900513517 DB20-1-5X/315V/12

R900599564 DB20-1-5X/315X

R900532966 DB20-1-5X/315XU

R900521436 DB20-1-5X/315XV

R900528455 DB20-1-5X/315XY

R900510169 DB20-1-5X/315XYB

R900703844 DB20-1-5X/315XYU

R900505340 DB20-1-5X/315XYV

R900598045 DB20-1-5X/315Y

R900521750 DB20-1-5X/315YB

R900506603 DB20-1-5X/315YV

R901339624 DB20-1-5X/330E

R900507009 DB20-1-5X/350

R900781639 DB20-1-5X/350-220

R901043318 DB20-1-5X/350-275

R901028387 DB20-1-5X/350D

R901379423 DB20-1-5X/350E

R901039128 DB20-1-5X/350V

R900572862 DB20-1-5X/350X

R900567567 DB20-1-5X/350XY/12

R901146521 DB20-1-5X/350Y

R901105682 DB20-1-5X/350YD

R901059059 DB20-1-5X/41UE

R900528963 DB20-1-5X/50

R900904397 DB20-1-5X/50/12

R900527283 DB20-1-5X/50U

R901067555 DB20-1-5X/50UD

R900947876 DB20-1-5X/50UV

R900926945 DB20-1-5X/50XY

R900777085 DB20-1-5X/50XYU

R900533026 DB20-1-5X/50Y

R900780055 DB20-1-5X/50YU

R900589433 DB20-2-5X/100

R900929462 DB20-2-5X/100-70

R900500869 DB20-2-5X/100/12

R900911337 DB20-2-5X/100/50

R900558857 DB20-2-5X/100=LB

R900597548 DB20-2-5X/100B

R901005482 DB20-2-5X/100D

R900772972 DB20-2-5X/100E

R900931888 DB20-2-5X/100J3

R900514811 DB20-2-5X/100U

R900514119 DB20-2-5X/100U/12

R900516200 DB20-2-5X/100UV

R900599840 DB20-2-5X/100V

R901005062 DB20-2-5X/100V/12

R900513873 DB20-2-5X/100VB

R901216609 DB20-2-5X/100VD

R900596693 DB20-2-5X/100X

R900745717 DB20-2-5X/100X/12

R900564157 DB20-2-5X/100XU

R900520388 DB20-2-5X/100XUV

R900905381 DB20-2-5X/100XV

R900501114 DB20-2-5X/100XY

R900597293 DB20-2-5X/100XYU

R900597421 DB20-2-5X/100Y

R900921114 DB20-2-5X/100Y/12

R900507799 DB20-2-5X/100YB

R901004229 DB20-2-5X/100YD

R900506585 DB20-2-5X/100YU

R978911970 DB20-2-5X/100YU/12

R900513186 DB20-2-5X/100YUV

R900556114 DB20-2-5X/100YV

R900763215 DB20-2-5X/115B

R901024064 DB20-2-5X/115E

R900546385 DB20-2-5X/120B

R900773205 DB20-2-5X/120E

R900782413 DB20-2-5X/120UE

R900546386 DB20-2-5X/125B

R901169731 DB20-2-5X/125E

R900546387 DB20-2-5X/140B

R900772971 DB20-2-5X/140E

R901405913 DB20-2-5X/140VE

R901003896 DB20-2-5X/140YE

R901321940 DB20-2-5X/145VE

R900546388 DB20-2-5X/150B

R900778950 DB20-2-5X/150E

R900546389 DB20-2-5X/150YB

R901004652 DB20-2-5X/150YE

R901406062 DB20-2-5X/150YVE

R900546390 DB20-2-5X/160B

R900780684 DB20-2-5X/160E

R900931522 DB20-2-5X/160XB

R900931522 DB20-2-5X/160XB

R900730923 DB20-2-5X/160YB

R900787149 DB20-2-5X/160YE

R900919800 DB20-2-5X/165B

R900769567 DB20-2-5X/165E

R900546391 DB20-2-5X/170B

R901138990 DB20-2-5X/170E

R900546392 DB20-2-5X/175B

R900769617 DB20-2-5X/175E

R900546393 DB20-2-5X/180B

R900773207 DB20-2-5X/180E

R900973724 DB20-2-5X/190B

R901172281 DB20-2-5X/190E

R900590768 DB20-2-5X/200

R900930933 DB20-2-5X/200-120

R901225115 DB20-2-5X/200-150

R901207674 DB20-2-5X/200-150XY

R900908035 DB20-2-5X/200-160

R900737382 DB20-2-5X/200-180

R900535931 DB20-2-5X/200/12

R900558858 DB20-2-5X/200=LB

R900597123 DB20-2-5X/200B

R901003073 DB20-2-5X/200D

R901003073 DB20-2-5X/200D

R900769587 DB20-2-5X/200E

R900704830 DB20-2-5X/200P175V

R900519775 DB20-2-5X/200U

R900564130 DB20-2-5X/200UB

R900707530 DB20-2-5X/200UV

R900948744 DB20-2-5X/200UV/12

R900513667 DB20-2-5X/200V

R900705853 DB20-2-5X/200V/12

R901231581 DB20-2-5X/200VD

R900595893 DB20-2-5X/200X

R900561259 DB20-2-5X/200X/12

R900523527 DB20-2-5X/200XU

R900959855 DB20-2-5X/200XUV

R900919860 DB20-2-5X/200XV

R900500218 DB20-2-5X/200XY

R900549653 DB20-2-5X/200XY/12

R900565471 DB20-2-5X/200XYU

R900966321 DB20-2-5X/200XYV

R900596528 DB20-2-5X/200Y

R900918105 DB20-2-5X/200Y/12

R900903802 DB20-2-5X/200Y/50

R900501297 DB20-2-5X/200YB

R900787948 DB20-2-5X/200YD

R900788059 DB20-2-5X/200YE

R901145333 DB20-2-5X/200YU

R900506323 DB20-2-5X/200YV

R900247762 DB20-2-5X/200YV/12

R901406071 DB20-2-5X/200YVD

R900546399 DB20-2-5X/210B

R900769388 DB20-2-5X/210E

R900932814 DB20-2-5X/210UB

R900546400 DB20-2-5X/210VB

R901231534 DB20-2-5X/210VE

R900546401 DB20-2-5X/210YB

R900787150 DB20-2-5X/210YE

R900546402 DB20-2-5X/215B

R901406175 DB20-2-5X/215E

R901376372 DB20-2-5X/215YE

R900546403 DB20-2-5X/220B

R901033277 DB20-2-5X/220E

R900546404 DB20-2-5X/220YB

R901442854 DB20-2-5X/220YE

R901371657 DB20-2-5X/225E

R901344600 DB20-2-5X/225YE

R900546405 DB20-2-5X/230B

R901018389 DB20-2-5X/230E

R901004439 DB20-2-5X/230YE

R901350460 DB20-2-5X/235VE

R900546406 DB20-2-5X/240B

R901015780 DB20-2-5X/240E

R900546675 DB20-2-5X/250

R900546407 DB20-2-5X/250B

R900769361 DB20-2-5X/250E

R900553539 DB20-2-5X/250YB

R901000240 DB20-2-5X/250YE

R900929176 DB20-2-5X/260B

R900546408 DB20-2-5X/270B

R901171318 DB20-2-5X/270E

R900578331 DB20-2-5X/270YB

R901067122 DB20-2-5X/275E

R900921846 DB20-2-5X/280B

R901049707 DB20-2-5X/280E

R900546409 DB20-2-5X/300B

R900775224 DB20-2-5X/300E

R901281681 DB20-2-5X/305YE

R900961373 DB20-2-5X/30B

R901411773 DB20-2-5X/30YE

R900593530 DB20-2-5X/315

R900249517 DB20-2-5X/315-120

R901024217 DB20-2-5X/315-160

R901049976 DB20-2-5X/315-200

R900953489 DB20-2-5X/315-205

R901275080 DB20-2-5X/315-230

R900785287 DB20-2-5X/315-235

R900931897 DB20-2-5X/315-240

R900927288 DB20-2-5X/315-245

R901024381 DB20-2-5X/315-250U

R901024382 DB20-2-5X/315-300U

R900511690 DB20-2-5X/315/12

R900596569 DB20-2-5X/315B

R900769501 DB20-2-5X/315E

R900931889 DB20-2-5X/315J3

R901427793 DB20-2-5X/315P210Y

R900906696 DB20-2-5X/315P220

R901428813 DB20-2-5X/315P230Y

R901027462 DB20-2-5X/315P280

R901077615 DB20-2-5X/315P315

R900589371 DB20-2-5X/315U

R900538787 DB20-2-5X/315UV

R900569123 DB20-2-5X/315UV/12

R900591404 DB20-2-5X/315V

R900513518 DB20-2-5X/315V/12

R900516390 DB20-2-5X/315VB

R901140505 DB20-2-5X/315VE

R900587347 DB20-2-5X/315X

R900562709 DB20-2-5X/315X/12

R900520503 DB20-2-5X/315XB

R900501816 DB20-2-5X/315XU

R900709198 DB20-2-5X/315XU/12

R900708116 DB20-2-5X/315XU/5

R901114852 DB20-2-5X/315XUJ

R900512789 DB20-2-5X/315XUV

R900500559 DB20-2-5X/315XV

R900596768 DB20-2-5X/315XY

R900514282 DB20-2-5X/315XY/12

R900599670 DB20-2-5X/315XYU

R900505282 DB20-2-5X/315XYV

R900594511 DB20-2-5X/315Y

R900566861 DB20-2-5X/315Y/12

R900504152 DB20-2-5X/315YB

R900785298 DB20-2-5X/315YE

R900513505 DB20-2-5X/315YU

R901045971 DB20-2-5X/315YUV

R901298442 DB20-2-5X/315YUV/12

R900501279 DB20-2-5X/315YV

R900546410 DB20-2-5X/320B

R901069108 DB20-2-5X/320E

R900773208 DB20-2-5X/320E

R901159473 DB20-2-5X/320YE

R900546411 DB20-2-5X/325YB

R900546412 DB20-2-5X/330B

R900773895 DB20-2-5X/330E

R900546413 DB20-2-5X/330VB

R900546414 DB20-2-5X/330XB

R900923960 DB20-2-5X/330YB

R900784525 DB20-2-5X/330YE

R901102677 DB20-2-5X/330YVE

R900783794 DB20-2-5X/340E

R900747143 DB20-2-5X/345B

R901280473 DB20-2-5X/345E

R900590618 DB20-2-5X/350

R900750758 DB20-2-5X/350-185

R901008767 DB20-2-5X/350-205

R901053007 DB20-2-5X/350-235

R901040597 DB20-2-5X/350-260

R901016417 DB20-2-5X/350-270

R901227043 DB20-2-5X/350-320

R900917470 DB20-2-5X/350-320X

R900535932 DB20-2-5X/350/12

R900571696 DB20-2-5X/350B

R901003070 DB20-2-5X/350D

R900773211 DB20-2-5X/350E

R900515208 DB20-2-5X/350J3

R901340445 DB20-2-5X/350P240/12

R901425665 DB20-2-5X/350P320X

R901055589 DB20-2-5X/350P330

R901093523 DB20-2-5X/350P350

R900509038 DB20-2-5X/350V

R901216658 DB20-2-5X/350VD

R901341712 DB20-2-5X/350VE

R900516184 DB20-2-5X/350X

R900571771 DB20-2-5X/350X/12

R901243991 DB20-2-5X/350XU

R900598442 DB20-2-5X/350XY

R900509468 DB20-2-5X/350Y

R900787950 DB20-2-5X/350YD

R901152593 DB20-2-5X/350YE

R900947300 DB20-2-5X/350YV

R901102958 DB20-2-5X/350YVD

R901235177 DB20-2-5X/35E

R901157893 DB20-2-5X/35YVE

R901296412 DB20-2-5X/40E

R900546371 DB20-2-5X/40YB

R901295782 DB20-2-5X/45E

R900597212 DB20-2-5X/50

R900577524 DB20-2-5X/50-20

R901312624 DB20-2-5X/50-30U

R900508047 DB20-2-5X/50/12

R900546372 DB20-2-5X/50B

R901235178 DB20-2-5X/50D

R901017434 DB20-2-5X/50E

R901128121 DB20-2-5X/50J3

R900919550 DB20-2-5X/50P20

R900523523 DB20-2-5X/50U

R978898276 DB20-2-5X/50U/12

R901356660 DB20-2-5X/50UV/12

R900504620 DB20-2-5X/50V

R900550230 DB20-2-5X/50X

R900773411 DB20-2-5X/50XU

R901211806 DB20-2-5X/50XV

R900595918 DB20-2-5X/50XY

R900935311 DB20-2-5X/50XYU

R900568989 DB20-2-5X/50XYV

R900597352 DB20-2-5X/50Y

R900534268 DB20-2-5X/50Y/12

R901001182 DB20-2-5X/50YD

R901001173 DB20-2-5X/50YE

R900532512 DB20-2-5X/50YU

R900505504 DB20-2-5X/50YV

R978012517 DB20-2-5X/50YV/12

R901158392 DB20-2-5X/50YVD

R900955535 DB20-2-5X/60B

R900546373 DB20-2-5X/70B

R900769623 DB20-2-5X/70E

R901216460 DB20-2-5X/70VE

R901004217 DB20-2-5X/70YE

R900546374 DB20-2-5X/80B

R900546375 DB20-2-5X/80VB

R900546376 DB20-2-5X/85YB

R901015146 DB20-2-5X/95E

R900546377 DB20-2-5X/95VB

R900500319 DB20-3-5X/100

R900908470 DB20-3-5X/100-100Y

R901171481 DB20-3-5X/100-90

R901169896 DB20-3-5X/100-90Y

R900768211 DB20-3-5X/100/12

R900512665 DB20-3-5X/100U

R900947910 DB20-3-5X/100UV

R900571005 DB20-3-5X/100V

R901007689 DB20-3-5X/100XU

R901111118 DB20-3-5X/100XY

R900599740 DB20-3-5X/100Y

R900925797 DB20-3-5X/100YV

R900501855 DB20-3-5X/200

R900574210 DB20-3-5X/200U

R900500905 DB20-3-5X/200V

R900522296 DB20-3-5X/200X

R900520906 DB20-3-5X/200XU

R900566474 DB20-3-5X/200XYU

R900907816 DB20-3-5X/200Y

R900549406 DB20-3-5X/200Y/12

R900956685 DB20-3-5X/200YU

R900597029 DB20-3-5X/315

R900519098 DB20-3-5X/315/12

R900512814 DB20-3-5X/315U

R900956764 DB20-3-5X/315U/12

R900712979 DB20-3-5X/315UV

R900500291 DB20-3-5X/315V

R900597155 DB20-3-5X/315X

R900527614 DB20-3-5X/315XU

R978875122 DB20-3-5X/315XU/12

R900616954 DB20-3-5X/315XY

R900515046 DB20-3-5X/315XYU

R900597594 DB20-3-5X/315Y

R900567993 DB20-3-5X/315YV

R900505248 DB20-3-5X/350

R901011412 DB20-3-5X/350U

R901187299 DB20-3-5X/350V

R901273563 DB20-3-5X/350X

R900502708 DB20-3-5X/50

R900515495 DB20-3-5X/50V

R900945148 DB20-3-5X/50V/12

R900505621 DB20-3-5X/50X

R900955194 DB20-3-5X/50Y

R900572866 DB20-4-5X/100

R900515116 DB20-4-5X/100XY

R901081857 DB20-4-5X/160X

R901081852 DB20-4-5X/160XM

R901081853 DB20-4-5X/160XYM

R900510446 DB20-4-5X/200

R900775507 DB20-4-5X/315

R900573359 DB20-4-5X/315/12

R900965147 DB20-4-5X/315X

R901074986 DB20-4-5X/315XM

R901074988 DB20-4-5X/315XYM

R901109863 DB20-4-5X/315Y

R900501321 DB20-5-5X/100

R900902315 DB20-5-5X/100-70

R900516590 DB20-5-5X/100U

R900944822 DB20-5-5X/100Y/12

R900554166 DB20-5-5X/100YM

R901081861 DB20-5-5X/160XY

R900524468 DB20-5-5X/200

R900564991 DB20-5-5X/200XYU

R901053899 DB20-5-5X/200Y

R900948655 DB20-5-5X/200Y/12

R900546649 DB20-5-5X/315

R901016093 DB20-5-5X/315-150

R901100592 DB20-5-5X/315V

R900537301 DB20-5-5X/315X

R900946814 DB20-5-5X/315XU

R900535874 DB20-5-5X/315XV

R900506299 DB20-5-5X/315XYSO533

R901020531 DB20-5-5X/315Y

R901040328 DB20-5-5X/315YV/12

R900567339 DB20-5-5X/50

R900532594 DB20-5-5X/50XY

R900518379 DB20-5-5X/50YM

R901355198 DB20-5-5X/50YMV

R900524784 DB20-6-5X/100

R900560614 DB20-6-5X/315

R900501084 DB20-6-5X/315V

R901081859 DB20-6-5X/80XYM

R900766257 DB20-7-5X/100

R900536510 DB20-7-5X/100UV

R901355568 DB20-7-5X/100Y

R900942534 DB20-7-5X/200

R901219149 DB20-7-5X/200XV

R900539745 DB20-7-5X/315XU

R900757533 DB20-7-5X/350

R901043740 DB20-7-5X/50

R901117987 DB20-7-5X/50U

R900920356 DB20-7-5X/50X

R901219147 DB20-7-5X/50XV

R900503185 DB25G.-5X/...

R900465515 DB25G1-3X/315X/5

R900533967 DB25G1-5X/100

R900522293 DB25G1-5X/100U

R901127359 DB25G1-5X/100XUV

R900539028 DB25G1-5X/200

R900511568 DB25G1-5X/200/12

R901127357 DB25G1-5X/200XUV

R900598377 DB25G1-5X/315

R900565820 DB25G1-5X/315MK/12

止回阀( Check Valve)：是能自动阻止流体倒流的阀门。止回阀的阀瓣在流体压力作用下开启，流体从进口侧流向出口侧。当进口侧压力低于出口侧时，阀瓣在流体压差、本身重力等因素作用下自动关闭以防止流体倒流。