Rexroth力士樂(lè)先導(dǎo)式比例方向閥

（力士樂(lè)rexroth溢流閥）是一種液壓壓力控制閥，在液壓設(shè)備中主要起定壓溢流作用，穩(wěn)壓，系統(tǒng)卸荷和安全保護(hù)作用。

溢流閥是一種液壓壓力控制閥，在液壓設(shè)備中主要起定壓溢流作用，穩(wěn)壓，系統(tǒng)卸荷和安全保護(hù)作用。

溢流閥的作用

定壓溢流作用：在定量泵節(jié)流調(diào)節(jié)系統(tǒng)中，定量泵提供的是恒定流量。當(dāng)系統(tǒng)壓力增大時(shí)，會(huì)使流量需求減小。此時(shí)溢流閥開(kāi)啟，使多余流量溢回油箱，保證溢流閥進(jìn)口壓力，即泵出口壓力恒定（閥口常隨壓力波動(dòng)開(kāi)啟）。
穩(wěn)壓作用：溢流閥串聯(lián)在回油路上，溢流閥產(chǎn)生背壓，運(yùn)動(dòng)部件平穩(wěn)性增加。
系統(tǒng)卸荷作用：在溢流閥的遙控口串接溢小流量的電磁閥，當(dāng)電磁鐵通電時(shí)，溢流閥的遙控口通油箱，此時(shí)液壓泵卸荷。溢流閥此時(shí)作為卸荷閥使用。
安全保護(hù)作用：系統(tǒng)正常工作時(shí)，閥門關(guān)閉。只有負(fù)載超過(guò)規(guī)定的極限（系統(tǒng)壓力超過(guò)調(diào)定壓力）時(shí)開(kāi)啟溢流，進(jìn)行過(guò)載保護(hù)，使系統(tǒng)壓力增加（通常使溢流閥的調(diào)定壓力比系統(tǒng)工作壓力高10%～20%）。

產(chǎn)品名稱:4WRH,WRZ,WRZE型先導(dǎo)式比例方向閥

品牌:力士樂(lè)Rexroth系列:力士樂(lè)閥產(chǎn)品描述:

品牌系列:REXROTH(力士樂(lè))

產(chǎn)品型號(hào):4WRH,WRZ,WRZE型

所屬類別:比例方向閥

產(chǎn)品說(shuō)明:規(guī)格10至52安裝面按ISO 4401控制流量的方向和大小;通過(guò)3通減壓閥進(jìn)行先導(dǎo)控制彈簧對(duì)中和主閥芯的反轉(zhuǎn)動(dòng)特點(diǎn);不同閥芯可遮蓋用于4WRZE的集成控制電氣元件(OBE)。

Rexroth力士樂(lè)先導(dǎo)式比例方向閥

（力士樂(lè)rexroth溢流閥）的作用 定壓溢流作用：在定量泵節(jié)流調(diào)節(jié)系統(tǒng)中，定量泵提供的是恒定流量。

部分（力士樂(lè)rexroth溢流閥）系列型號(hào)：

溢流閥DBDS系列

R900420245DBDS6K1X/25

R900423727DBDS6K1X/50

R900423723DBDS6K1X/100

R900423724DBDS6K1X/200

R900423725DBDS6K1X/315

R900423726DBDS6K1X/400

R900420276DBDS10K1X/25

R900424153DBDS10K1X/5O

R900424147DBDS10K1X/100

R900424149DBDS10K1X/2O0

R900424150DBDS10K1X/315

R900424152DBDS10K1X/400

R900427601DBDS10K1X/630

R900422542DBDS20K1X/25

R900424205DBDS20K1X/50

R900424267DBDS20K1X/100

R900424271DBDS20K1X/315

R900424203DBDS20K1X/400

R900422543DBDS30K1X/25

R900424282DBDS30K1X/50

R900424284DBDS30K1X/100

R900424286DBDS30K1X/200

Rd00424286DBDS30K1X/315

R900423718DBDS6G1X/25

R900423722DBDS6G1X/50

R900423717DBDS6G1X/100

R900423719DBDS6G1X/200

R900423720DBDS6G1X/315

R900423721DBDS6G1X/400

R900429414DBDS6P1X/25

R900423732DBDS6P1X/50

R900423728DBDS6P1X/100

R900423729DBDS6P1X/200

R900423730DBDS6P1X/315

R900423731DBDS6P1X/400

溢流閥先導(dǎo)閥 DBT ZDBT系列

0811104100DBT-XP8-1X/160

0811104101DBT-XP8-1X/315

0811104102DBT-XP2-1X/160

0811104103DBT-XP2-1X/315

0811104131DBT-XP2-1X/350

0811104104DBT-XP7-1X/160

0811104105DBT-XP7-1X/315

0811104106DBT-XP3-1X/160

0811104107DBT-XP3-1X/315

0811104108DBT-XP1-1X/160

0811104109DBT-XP1-1X/315

0811104110ZDBT-XP8-1X/160

0811104111ZDBT-XP8-1X/315

0811104112ZDBT-XP2-1X/160

0811104113ZDBT-XP2-1X/315

0811104130ZDBT-XP2-1X/350

0811104114ZDBT-XP7-1X/160

0811104115ZDBT-XP7-1X/315

0811104116ZDBT-XP3-1X/160

0811104117ZDBT-XP3-1X/315

0811104118ZDBT-XA8-1X/160

0811104119ZDBT-XA8-1X/315

0811104120ZDBT-XA2-1X/160

0811104121ZDBT-XA2-1X/315

溢流閥直動(dòng)式 ZDBY Z2DBY

0811101275ZDBY10DP2-1X/80V

0811101276ZDBY10DP2-1X/160V

0811101277ZDBY10DP2-1X/315V

0811101278ZDBY10DP3-1X/80V

0811101279ZDBY10DP3-1X/160V

0811101280ZDBY10DA2-1X/80V

0811101281ZDBY10DA2-1X/160V

0811101282ZDBY10DA2-1X/315V

0811101283ZDBY10DA3-1X/80V

0811101284ZDBY10DA3-1X/160V

0811101285ZDBY10DB2-1X/80V

0811101286ZDBY10DB2-1X/160V

0811101287ZDBY10DB2-1X/315V

0811101288ZDBY10DB3-1X/80V

0811101289ZDBY10DB3-1X/160V

0811101290Z2DBY10DC2-1X/80V

0811101291Z2DBY10DC2-1X/160V

0811101292Z2DBY10DC2-1X/315V

0811101293Z2DBY10DC3-1X/80V

0811101294Z2DBY10DC3-1X/160V

0811101295Z2DBY10DD2-1X/80V

0811101296Z2DBY10DD2-1X/160V

0811101297Z2DBY10DD2-1X/315V

0811101298Z2DBY10DD3-1X/80V

0811101299Z2DBY10DD3-1X/160V

溢流閥先導(dǎo)式DB

R900590645DB10-2-5X/50

R900590646DB10-2-5X/100

R900587772DB10-2-5X/200

R900590334DB10-2-5X/315

R900597992DB10-2-5X/350

R900597212DB10-2-5X/50

R900589433DB20-2-5X/100

R900590768DB20-2-5X/200

R900593530DB20-2-5X/315

R900590618DB20-2-5X/350

R900590328DB20G2-5X/50

R900597307DB20G2-5X/200

R900597747DB20G2-5X/315

R900599232DB20G2-5X/350

R900593564DB30-2-5X/50

R900594677DB30-2-5X/100

R900588131DB30-2-5X/200

R900591128DB30-2-5X/315

R900504902DB30-2-5X/350

R901051933   DB3U 10 H1-5X/315-6EG24N9K4

R900911453   DB3U 10 H2-5X/100-6EG24K4

R900949067   DB3U 10 H2-5X/100-6EG24N9K4

R900955024   DB3U 10 H2-5X/100-6EW110N9K4

R901121185   DB3U 10 H2-5X/100-6EW230N9K4

R900959064   DB3U 10 H2-5X/100U6EG24N9K4

R901216698   DB3U 10 H2-5X/100Y6EG24N9K4

R900723678   DB3U 10 H2-5X/100YU6EG24N9K4

R900928220   DB3U 10 H2-5X/100YU6EW230N9K4

R900924809   DB3U 10 H2-5X/200-6EW110N9K4V

R901269809   DB3U 10 H2-5X/200U6EG24N9K4

R901153630   DB3U 10 H2-5X/200Y6EG24N9K4

R900939426   DB3U 10 H2-5X/315-6EG205N9K4

R900951841   DB3U 10 H2-5X/315-6EG24N4K4

R900943647   DB3U 10 H2-5X/315-6EG24N5K4

R900701668   DB3U 10 H2-5X/315-6EG24N9DLV

R900971065   DB3U 10 H2-5X/315-6EG24N9K4

R900942890   DB3U 10 H2-5X/315-6EG24N9K4V

R900710474   DB3U 10 H2-5X/315-6EG24NEXZ2

R901118997   DB3U 10 H2-5X/315-6EW110N9K4

R900771578   DB3U 10 H2-5X/315-6EW110N9K4V

R900924943   DB3U 10 H2-5X/315-6EW230N9K4

R901068112   DB3U 10 H2-5X/315U6EG220N9K4

R900957198   DB3U 10 H2-5X/315U6EG24N9K4

R901193736   DB3U 10 H2-5X/315U6EW110N9K4

R900747100   DB3U 10 H2-5X/315U6EW230N9K4

R900958750   DB3U 10 H2-5X/315X6EG24N9K4

R900941188   DB3U 10 H2-5X/315XY6EG24K4

R900757839   DB3U 10 H2-5X/315XY6EG24N9K4

R901061962   DB3U 10 H2-5X/315XYU6EW230N9K4

R900941877   DB3U 10 H2-5X/315Y6EG24N9K4

R901091971   DB3U 10 H2-5X/315Y6EG24N9K4V

R900966180   DB3U 10 H2-5X/315Y6EG24NDL

R900723099   DB3U 10 H2-5X/315Y6EW110N9K4

R900967331   DB3U 10 H2-5X/315Y6EW230N9K4

R900617323   DB3U 10 H2-5X/315YU6EG24N9K4

R900971664   DB3U 10 H2-5X/315YU6EW110N9K4

R900955174   DB3U 10 H2-5X/350-6EG24N9K4

R900943336   DB3U 10 H2-5X/350-6EG24NDL

R901056675   DB3U 10 H2-5X/350-6EW110N9K4

R900747206   DB3U 10 H2-5X/350-6EW230N9K4

R901340776   DB3U 10 H2-5X=350-6EG24N9K4

R900769246   DB3U 10 H3-5X/100-6EG24N9K4

R900938529   DB3U 10 HG2-5X/350-6EG24N9K4

R900786706   DB3U 10 HG3-5X/200-6EG24N9K4