液壓油的壓力越大，閥芯被液壓油頂起得越髙，液壓油經溢流閥流回油箱的流量越大如過液壓油的壓力小于或等于彈簧壓力，則閥芯落下，封住液壓油進口。由于油泵輸出的液壓油壓力固定，而工作油缸用液壓油的壓力總要比油泵輸出液壓油壓力小，所以正常工作時總會有一些液壓油從溢流閥處流回油箱，以保持液壓油缸的工作壓力平衡、正常工作DBW溢流閥
R900244659 DBW30A2-5X/100YU6EW110N9K4
R900245523 DBW30B2-5X/350X6EG24N9K4
R900247366 DBW30B1-5X/350-6EW110N9K4
R900249021 DBW30A2-5X/350X6EG24N9K4
R900550746 DBW20B2-5X/100U6EG24N9K4
R900616333 DBW30BG2-5X/315XU6EG24N9K4
R900700996 DBW20A2-5X/315YU6EG24N9K4
R900701130 DBW25BG2-5X/100U6EG24NK4
R900703380 DBW15BG2-5X/315U6EW110N9K4V
R900705014 DBW10B2-5X/200U6EW110N9K4
R900705015 DBW20AG1-5X/350YU6EG24N9K4
R900706341 DBW20A2-5X/100Y6EG24NK4
R900708394 DBW20B2-5X/315YU6EW110N9K4V
R900708837 DBW10A2-5X/200-6EW230N9K4
R900709997 DBW30A1-5X/315-6EG24N9K4
R900713688 DBW20A1-5X/315U6EG24N9K4
R900714734 DBW20B1-5X/100U6EG24N9K4
R900714739 DBW52BP2-3X/315XU6EW110N9K4
R900722217 DBW20B3-5X/315U6EG24N9K4
R900731506 DBW20B1-5X/315U6EW110N9K4
R900737208 DBW20BG3-5X/200Y6EW110N9K4
R900741804 DBW10A2-5X/315U6EG24N9K4
R900743318 DBW10B3-5X/315S6EG24K4R12
R900746333 DBW10A2-5X/100-6EW110N9K4V
R900751465 DBW20A1-5X/315-6EW110N9K4
R900757733 DBW10B2-5X/100-6EG24NK4
R900767662 DBW52BF2-3X/315U6EW110N9K4
R900768947 DBW15BG2-5X/315-6EW110N9K4
R900769261 DBW20B3-5X/315YU6EW110N9K4V
R900770685 DBW10A1-5X/350-6EG24N9K4
R900782169 DBW52BP2-3X/315XYU6EW110N9K4
R900785762 DBW20A2-5X/200U6EG24N9K4
R900786069 DBW10B3-5X/315Y6EG24N9K4
R900787487 DBW20B1-5X/100-6EW230N9K4
R900900555 DBW20B2-5X/350-6EG24N9K4
R900906284 DBW10BG2-5X/315-6EG24N9K4
R900906285 DBW10B2-5X/315-6EG24N9K4
R900906350 DBW10B2-5X/315-6EW110N9K4
R900906351 DBW10B2-5X/200-6EW110N9K4
R900906352 DBW10B2-5X/100-6EW110N9K4
R900906353 DBW20B2-5X/200-6EW110N9K4
R900906355 DBW20B2-5X/315-6EW110N9K4
R900906384 DBW10BG2-5X/200-6EG24N9K4
R900906650 DBW10B2-5X/100-6EG24N9K4
R900906676 DBW30BG2-5X/315-6EG24N9K4
R900907684 DBW20B2-5X/315-6EG24N9K4
R900908477 DBW30B2-5X/350-6EG24N9K4
R900908999 DBW10B3-5X/315-6EG24N9K4
R900909412 DBW20B2-5X/315-6EW110N9K4V
R900909952 DBW20B2-5X/100-6EW110N9K4
R900910336 DBWC30B2-5X/315-6EG24N9K4
