（力士樂溢流閥）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。
（力士樂溢流閥）一般有兩種結(jié)構(gòu)：1、直動(dòng)型溢流閥 。2、先導(dǎo)式溢流閥。
對(duì)溢流閥的主要要求：調(diào)壓范圍大，調(diào)壓偏差小，壓力振擺小，動(dòng)作靈敏，過載能力大，噪聲小。
部分（力士樂溢流閥）系列型號(hào)：
溢流閥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
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
