（力士乐溢流阀）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。 溢流阀的作用 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。当系统压力增大时，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。

  （力士乐溢流阀）一般有两种结构：1、直动型溢流阀 。2、先导式溢流阀。

  对溢流阀的主要要求：调压范围大，调压偏差小，压力振摆小，动作灵敏，过载能力大，噪声小。

部分（力士乐溢流阀）系列型号：

溢流阀DBDA系列

R900423780DBDA6K1X/25

R90042S083DBDA6K1X/S0

R900425080DBDA6K1X/100

R900425081DBDA6K1X/200

R900425082DBDA6K1X/315

R900428387DBDA6K1X/4O0

R900427600DBDH6K1X/25

R900424734DBDH6K1X/S0

R900424199DBDH6K1X/100

R900424200DBDH6K1X/2O0

R900424201DBDH6K1X/315

R900424202DBDH6K1X/400

R900430305DBDA10K1X/2S

R900425966DBDA10K1X/50

R900425161DBDA10K1X/100

R900425162DBDA10K1X/200

R900425164DBDA10K1X/315

R900425165DBDA10K1X/400

R900426635DBDA10K1X/630

R900432465DBDA6G1X/25

R900424177DBDA6G1X/50

R900425076DBDA661X/100

R900426477DBDA6G1X/200

R900426478DBDA661X/315

R900428382DBDA6G1X/400

R900426897DBDH6G1X/25

R900424198DBDH661X/50

R900424195DBDH661X/100

R900424196DBDH6G1X/200

R900424197DBDH6G1X/315

R900424348DBDH6G1X/400

R900430378DBDH6P1X/25

R900428385DBDH6P1X/50

R900424246DBDH6P1X/100

R900427242DBDH6P1X/200

R900424266DBDH6P1X/315

R900434128DBDH6P1X/400

R900424180DBDH10G1X/50

R900424188DBDH10G1X/100

R900424178DBDH10G1X/200

R900424189DBDH10G1X/315

R900423739DBDH10G1X/630

R900445875DBDH30K1X/25

R900424193DBDH30K1X/50

R900423028DBDH20K1X/25

R900424112DBDH20K1X/50

R900424109DBDH20K1X/100

R900435222DBDH10K1X/25

R900424185DBDH10K1X/S0

R900423891DBDH10K1X/100

R900424190DBDH10K1X/200

R900424183DBDH10K1X/315

R900424184DBDH10K1X/400

R900433807DBDH10K1X/630

溢流阀先导阀 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

溢流阀直动式  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

溢流阀先导式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

R900598149  DB 10 G2-5X/100

R900577791  DB 10 G2-5X/100B

R901283930  DB 10 G2-5X/100D

R901369480  DB 10 G2-5X/100E

R900560199  DB 10 G2-5X/100U

R900546916  DB 10 G2-5X/100V

R900500857  DB 10 G2-5X/100X

R900535686  DB 10 G2-5X/100XU

R901409845  DB 10 G2-5X/100XY

R900506685  DB 10 G2-5X/100Y

R901298009  DB 10 G2-5X/110E

R901270492  DB 10 G2-5X/115E

R901410871  DB 10 G2-5X/120E

R901291808  DB 10 G2-5X/125E

R901270676  DB 10 G2-5X/130E

R901270671  DB 10 G2-5X/135E

R900546293  DB 10 G2-5X/140B

R901355804  DB 10 G2-5X/140E

R901353674  DB 10 G2-5X/145E

R900923282  DB 10 G2-5X/150B

R901313635  DB 10 G2-5X/150E

R901285090  DB 10 G2-5X/155E

R900579243  DB 10 G2-5X/160B

R901286931  DB 10 G2-5X/160E

R901382894  DB 10 G2-5X/165E

R901333490  DB 10 G2-5X/170E

R900900320  DB 10 G2-5X/175B

R901257500  DB 10 G2-5X/175E

R900767624  DB 10 G2-5X/180B

R901149270  DB 10 G2-5X/180E

R901283853  DB 10 G2-5X/190E

R901365451  DB 10 G2-5X/195E

R900597363  DB 10 G2-5X/200

R900511044  DB 10 G2-5X/200B

R901004680  DB 10 G2-5X/200D

R901315636  DB 10 G2-5X/200E 

R900559545  DB 10 G2-5X/200V

R900539744  DB 10 G2-5X/200X

R900968514  DB 10 G2-5X/200XY 

R900508489  DB 10 G2-5X/200Y

R901037477  DB 10 G2-5X/200YV

R900900321  DB 10 G2-5X/210B

R900775477  DB 10 G2-5X/210E

R900979712  DB 10 G2-5X/250B

R900769530  DB 10 G2-5X/250E

R901313366  DB 10 G2-5X/260E

R900935319  DB 10 G2-5X/300B

R900935319  DB 10 G2-5X/300B

R901106405  DB 10 G2-5X/30E

R900590737  DB 10 G2-5X/315

R900744509  DB 10 G2-5X/315B

R901239461  DB 10 G2-5X/315E

R900966934  DB 10 G2-5X/315J3

R900947547  DB 10 G2-5X/315V

R900505374  DB 10 G2-5X/315X

R901228658  DB 10 G2-5X/315XJ3

R901026090  DB 10 G2-5X/315XU

R900562988  DB 10 G2-5X/315XY

R900535064  DB 10 G2-5X/315Y

R901364870  DB 10 G2-5X/315YV

R900513797  DB 10 G2-5X/350

R901013697  DB 10 G2-5X/350D

R900560836  DB 10 G2-5X/350U

R900521337  DB 10 G2-5X/350X

R900968097  DB 10 G2-5X/350Y

R901402829  DB 10 G2-5X/45E

R900599233  DB 10 G2-5X/50

R900597296  DB 10 G2-5X/50B

R901106538  DB 10 G2-5X/50D

R901406786  DB 10 G2-5X/50E

R901287266  DB 10 G2-5X/50P20

R900510576  DB 10 G2-5X/50U

R900503105  DB 10 G2-5X/50UJ3

R900953459  DB 10 G2-5X/50UV

R900597414  DB 10 G2-5X/50V

R900746747  DB 10 G2-5X/50XY

R900505398  DB 10 G2-5X/50Y

R901098905  DB 10 G2-5X/50YU

R900537299  DB 10 G2-5X/50YUV

R900505078  DB 10 G2-5X/50YV

R901402116  DB 10 G2-5X/60E

R901283852  DB 10 G2-5X/70E

R901313633  DB 10 G2-5X/85E

R901317252  DB 10 G2-5X/90E

R901295019  DB 10 G2-5X/95E