DBET-5X/315G24K4V-23   DBET-5X/315G24N9K4M  

DBET-5X/315G24N9K4M-1  DBET-5X/315G24N9K4V-1 

DBET-5X/315G24NJM      DBET-5X/315G24NK4M  

DBET-5X/315G24NK4M-1   DBET-5X/315G24NK4V 

DBET-5X/315G24NK4V-1   DBET-5X/315YG24K4M-1 

DBET-5X/315YG24K4V-1   DBET-5X/315YG24NK4M-1 

DBET-5X/315YG24NK4V-1  DBET-5X/350G24K4M 

DBET-5X/350G24K4M-1    DBET-5X/350G24K4M-26 

DBET-5X/350G24K4M-27   DBET-5X/350G24K4V 

DBET-5X/350G24N9K4M    DBET-5X/350G24N9K4M-1 

DBET-5X/350G24NK4M     DBET-5X/350G24NK4M-1 

DBET-5X/350YG24K4M-1   DBET-5X/350YG24N9K4M-1 

DBET-5X/350YG24NK4M-1  DBET-5X/400G24K4M-8 

DBET-5X/400G24K4V-8    DBET-5X/400G24N9K4M-8 

DBET-5X/400G24NK4M-8   DBET-5X/400YG24NK4M-14 

DBET-5X/50G24K4M       DBET-5X/50G24K4V  

DBET-5X/50G24K4V-1     DBET-5X/50G24NK4M  

DBET-5X/50G24NK4M-1    DBET-5X/50G24NK4M-16  

DBET-5X/50YG24K4M-1    DBET-5X=315G24K4M=DE 

DBET-6X/200G24K4V      DBETB-1X/180G24K4M 

DBETB-1X/230G24K4M     DBETB-1X/230G24K4M-551 

DBETB-1X/25G24K4M      DBETE-6X/200YG24K31F1V

DBET-6X/200YG24K4V     DBETE-6X/200YG24K31A1V

⒈逆流閥阻尼孔被堵死，閥座損壞，繃簧疲勞或損壞，閥芯移動不靈活，長途調壓管路過長，發生嘯叫聲；避免和掃除辦法是：清洗，修正，替換繃簧清洗、去毛刺，在滿足運用要求情況下，盡量縮短該管路長度。

       ⒉電液閥電磁鐵失靈，操控壓力不穩定；避免和掃除辦法是：檢修，選用適宜的操控油路。

       ⒊液壓油泵內部零件卡阻或損壞，軸頸油封損壞，進油口密封圈損壞；避免和掃除辦法是：清洗、替換。

       ⒋液壓設備系統的液壓管路中液壓脈動，管長及元件裝置位置匹配不合理，吸油過濾器堵塞，吸油管路漏氣，油溫過高或過低，管夾松動等原因；避免和掃除辦法是：在液壓油泵出口增設蓄能器或消聲器，合理確認管長及元件裝置位置，清洗或替換，改善密封性，查看溫控組件工作狀況，緊固等。