力士乐DBE（M）型比例溢流阀又比例先导阀，安全阀和插装式主阀组成。比例先导阀控制主阀遥控口。力士乐DBE型比例溢流阀按输入电流大小成比例地控制液压系统的压力，阀的通油能力大，适用于流量较大的液压系统

    力士乐DBE型比例溢流阀的系统压力极限由比例电磁铁2设定，与电流有关，来自系统的压力作用于主阀芯4，与此同时，经过装有节流孔5的先导管作用于主阀芯4的弹簧加载侧并作用在先导阀芯6.如果系统压力升高得超过对应着电磁铁力的设定值，则先导阀芯6打开。
    现在先导油可以流回油箱，节流孔组产生作用在主阀芯4上的压降，使它从阀座上升起并打开从泵到油箱的通路。
    力士乐DBEM行比例溢流阀为了保护系统免遭比例电磁铁2处不能允许的高电流尖峰引起的不能允许的高压之害，有一种供选方案是装设一个弹簧加载的压力溢流阀7提供zui高保护。

    力士乐DBE(M)型比例溢流阀由直流比例电磁铁和先导型溢流阀组成。工作原理是：当输入一个电信号时，比例电磁铁1便产生一个相应的电磁力，它通过推杆2和弹簧3的作用，使锥阀4接触在阀座5上，因此打开的液压力与电流成正比，形成一个比例先导压力阀。孔a为主阀阀芯6的阻尼孔，由先导式溢流阀工作原理，对溢流阀阀芯6上的受力分析可知，电液比例溢流阀进口压力的高低与输人信号电流的大小成正比，即进口油压受输入电磁铁的电流大小控制。若输入信号电流是连续地按比例地或按一定程序变化，则比例溢流阀所调节的液压系统压力，也连续地按比例地或按一定程序地进行变化。从而将手调溢流阀，改为电信号控制。

　　力士乐DBE(M)型比例溢流阀实现多级压力控制，当以不同电流J1、j2、J3、J4和J5输入时，溢流阀就可得到五种压力控制，它与普通溢流阀的多级压力控制相比，液压元件数量少，系统简单。若输入的是连续变化的信号则可实现连续的压力控制。

　　先导型比例溢流阀。它的先导部分是直动式比例压力阀，可直接作为直动式比例溢流阀使用。若与普通压力阀组合，可组成先导型比例溢流阀、比例减压阀和比例顺序阀等元件。

Rexroth力士乐DBE(M)型比例溢流阀的*型号：
R900917730  DBE 10-3X/50YG24K4-115     R900916121  DBE 10-5X/100YG24K4M
R900916122  DBE 10-5X/100YG24K4M-1     R900579169  DBE 10-5X/200YG24K4M
R901069892  DBE 10-5X/315XYG24K4M      R900916124  DBE 10-5X/315YG24K4M
R900916123  DBE 10-5X/315YG24NK4M-1    R900967563  DBE 10-5X/350YG24K4M
R900916125  DBE 10-5X/50XYG24K4M       0811402109  DBE 10X-1X/180G24-8NZ4M
0811402110  DBE 10X-1X/315G24-8NZ4M    0811402108  DBE 10X-1X/80G24-8NZ4M
0811402117  DBE 10Z-1X/180XYG24-8NZ4M  0811402118  DBE 10Z-1X/315XYG24-8NZ4M
R900917731  DBE 20-3X/50YG24K4-115     R900916242  DBE 20-5X/100YG24NK4M
R900975472  DBE 20-5X/315YG24K4M       R900940821  DBE 20-5X/350YG24K4M
R900916131  DBE 30-3X/100YG24K4M       R900916132  DBE 30-3X/200YG24K4M
R900916133  DBE 30-3X/315YG24K4M       0811402041  DBE 6X-1X/180G24-25NZ4M
0811402044  DBE 6X-1X/180G24-8NZ4M     0811402042  DBE 6X-1X/315G24-25NZ4M
0811402043  DBE 6X-1X/315G24-8NZ4M     0811402040  DBE 6X-1X/80G24-25NZ4M
0811402045  DBE 6X-1X/80G24-8NZ4M      R900924428  DBE6-1X/100G24NK4M
R900916244  DBE6-1X/100YG24NK4M        R900916047  DBE6-1X/200G24K4M
R900916048  DBE6-1X/200G24NK4M         R900936001  DBE6-1X/200YG24NK4M
R900551840  DBE6-1X/315G24K4M          R900573294  DBE6-1X/315G24NK4M
R900943833  DBE6-1X/315YG24K4M         R900916045  DBE6-1X/315YG24NK4M
R900945295  DBE6-1X/350G24NK4M         R900916046  DBE6-1X/50G24NK4M
R900946371  DBE6-1X/50YG24NK4M   811402100  DBEB 10Z-1X/180XYG24-37Z4M

力士乐DBE（M）型比例溢流阀

0811402101  DBEB 10Z-1X/315XYG24-37Z4M 0811402095  DBEB 6X-1X/180G24-25Z4M
0811402115  DBEBE 10Z-1X/180XYG24K31A1M  0811402116  DBEBE 10Z-1X/315XYG24K31A1M
0811402077  DBEBE 6X-1X/180G24K31A1M   0811402079  DBEBE 6X-1X/180G24K31F1M
0811402076  DBEBE 6X-1X/315G24K31A1M   0811402078  DBEBE 6X-1X/80G24K31A1M
R900963245  DBEC 30-3X/315YG24K4       R900931821  DBEE 10-5X/200YG24K31M
R900535115  DBEE 10-5X/315YG24K31M     R900974904  DBEE 10-5X/50YG24NK31M
R900731840  DBEE 20-5X/100YG24K31M     R901163997  DBEE 20-5X/200YG24K31V
R900948803  DBEE 6-1X/100G24K31M       R900919359  DBEE 6-1X/100YG24K31M
R900727718  DBEE 6-1X/100YG24NK31M     R900952490  DBEE 6-1X/200G24K31M
R900728050  DBEE 6-1X/200G24K31V       R900954433  DBEE 6-1X/200YG24K31M
R900546986  DBEE 6-1X/315G24K31M       R900940727  DBEE 6-1X/315G24K31V
R900962239  DBEE 6-1X/315G24NK31M      R900546987  DBEE 6-1X/315YG24K31M
R900743106  DBEE 6-1X/315YG24K31V      R900706135  DBEE 6-1X/350YG24K31M
R900972193  DBEE 6-1X/50G24K31M        R900940726  DBEE 6-1X/50G24K31V
R900954432  DBEE 6-1X/50YG24K31M       R900943143  DBEM 10-5X/100YG24K4M
R900965816  DBEM 10-5X/200XYG24K4M     R900941300  DBEM 10-5X/200XYG24K4M-1
R900923238  DBEM 10-5X/200YG24K4M      R900946965  DBEM 10-5X/200YG24K4M-1
R900579448  DBEM 10-5X/200YG24NK4M     R900916245  DBEM 10-5X/200YG24NK4M-1
R900574165  DBEM 10-5X/315XYG24K4M-1   R900547401  DBEM 10-5X/315YG24K4M
R900923190  DBEM 10-5X/315YG24K4M-1    R900705663  DBEM 10-5X/315YG24K4V
R900904645  DBEM 10-5X/350YG24K4M      R900928037  DBEM 10-5X/50YG24K4M
R900916127  DBEM 20-5X/100YG24K4M      R900916128  DBEM 20-5X/100YG24K4M-1
R900941302  DBEM 20-5X/200XYG24K4M-1   R900923239  DBEM 20-5X/200YG24K4M
R900579947  DBEM 20-5X/200YG24K4M-1    R900941260  DBEM 20-5X/200YG24K4V-1
R900916129  DBEM 20-5X/200YG24NK4M     R900727879  DBEM 20-5X/315XYG24K4M
R900962811  DBEM 20-5X/315XYG24K4M-1   R900923241  DBEM 20-5X/315YG24K4M
R900916130  DBEM 20-5X/315YG24K4M-1    R900578827  DBEM 20-5X/350YG24K4M
R900709844  DBEM 20-5X/350YG24K4V      R901114837  DBEM 20-5X/50YG24K4M
R900922698  DBEM 20-5X/50YG24NK4M      R901055517  DBEM 30 G-3X/420YG24K4V-683
R900916134  DBEM 30-3X/100YG24K4M      R900916135  DBEM 30-3X/200XYG24K4M
R900921597  DBEM 30-3X/200YG24K4M      R900552114  DBEM 30-3X/315YG24K4M
R900245866  DBEM 30-3X/350XYG24K4M     R900719426  DBEM 30-3X/50YG24K4M
R900954707  DBEME 10-5X/100YG24K31M    R900924513  DBEME 10-5X/100YG24NK31M
R900954708  DBEME 10-5X/200YG24K31M    R900551073  DBEME 10-5X/200YG24NK31M
R900958678  DBEME 10-5X/315XYG24K31M   R900536812  DBEME 10-5X/315YG24K31M 
R900941261  DBEME 10-5X/350YG24K31M    R900908585  DBEME 10-5X/50YG24K31M
R900717759  DBEME 20-5X/100XYG24K31M   R900937307  DBEME 20-5X/100YG24K31M
R900954709  DBEME 20-5X/200YG24K31M    R900901375  DBEME 20-5X/315XYG24K31M
R900536813  DBEME 20-5X/315YG24K31M    R900954711  DBEME 20-5X/50YG24K31M
R900954710  DBEME 20-5X/350YG24K31M    R900937596  DBEME 20-5X/350YG24K31V
R900954713  DBEME 30-3X/100YG24K31M    R900954714  DBEME 30-3X/200YG24K31M
R900954715  DBEME 30-3X/315YG24K31M    R900954716  DBEME 30-3X/350YG24K31M
R900954717  DBEME 30-3X/50YG24K31M

    力士乐比例溢流阀是一种能够使所输出油液的参数（压力）随输入电信号参数（电流或电压）的变化而成比例地变化的液压控制阀。通过电磁铁电压的变化产生不同大小的推力作用在阀芯上，从而得到连续变化的液压压力。