DB型閥主要用作溢流閥、安全閥、遠程調試閥等。廣泛應用于輕工、機床、冶金、礦山、航天等各領域中，是替代進口的優質元件。

DB/DBW型閥是先導控制的二節同心式溢流閥，導閥和主閥均為錐閥式結構。DB型閥主要用于控制系統的壓力；DBW型閥也可以控制系統的壓力并能在任意時刻使之卸荷。

——板式連接

——管式連接

——插裝式連接

——有三種壓力調節型式

帶保護罩的內六角調節螺栓

調節手柄

帶鎖調節手柄

——由電磁換向閥電磁卸荷

DBW10B-1-50B/3156AG24N9Z4  DBW10B-1-50B/3156AG24N9Z5 

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