DBD泄壓(ya)(ya)(ya)閥(fa)(fa)(fa)是直(zhi)動(dong)式溢(yi)流(liu)(liu)閥(fa)(fa)(fa)，它們(men)被(bei)用(yong)于限(xian)制液壓(ya)(ya)(ya)系統(tong)(tong)中的(de)壓(ya)(ya)(ya)力(li)(li)，DBD型溢(yi)流(liu)(liu)閥(fa)(fa)(fa)提(ti)(ti)供(gong)(gong)線(xian)接觸(chu)密(mi)封的(de)最小泄漏關閉，壓(ya)(ya)(ya)力(li)(li)能(neng)力(li)(li)的(de)全系列可(ke)供(gong)(gong)選擇。該閥(fa)(fa)(fa)主要由(you)套(tao)管，彈簧(huang)，閥(fa)(fa)(fa)芯帶阻尼(ni)閥(fa)(fa)(fa)芯（壓(ya)(ya)(ya)力(li)(li)級(ji)(ji)25到(dao)400巴(ba)）或球(qiu)（壓(ya)(ya)(ya)力(li)(li)級(ji)(ji)630巴(ba)）和調節元件(jian)組成。系統(tong)(tong)壓(ya)(ya)(ya)力(li)(li)的(de)設定是通過調節元件(jian)無級(ji)(ji)變速(su)。系統(tong)(tong)中的(de)壓(ya)(ya)(ya)力(li)(li)被(bei)施加到(dao)提(ti)(ti)升閥(fa)(fa)(fa)區域(yu)（或球(qiu)）。如果在通道(dao)中的(de)壓(ya)(ya)(ya)力(li)(li)上升到(dao)高于設置所述彈簧(huang)的(de)值時(shi)，提(ti)(ti)升閥(fa)(fa)(fa)或球(qiu)打開以抵抗(kang)彈簧(huang)。為了保持在整(zheng)個(ge)壓(ya)(ya)(ya)力(li)(li)范圍內(nei)具有良好的(de)壓(ya)(ya)(ya)力(li)(li)設定，壓(ya)(ya)(ya)力(li)(li)范圍被(bei)分(fen)成7個(ge)壓(ya)(ya)(ya)力(li)(li)級(ji)(ji)。一個(ge)壓(ya)(ya)(ya)力(li)(li)級(ji)(ji)對應于特定的(de)彈簧(huang)，由(you)此最大操(cao)作壓(ya)(ya)(ya)力(li)(li)可(ke)以設置。

Rexroth力士(shi)樂(le)由原博(bo)世(shi)自動(dong)(dong)(dong)(dong)化技術部與(yu)(yu)原力士(shi)樂(le)公(gong)司于2001年合(he)并成為(wei)博(bo)世(shi)力士(shi)樂(le)公(gong)司，屬(shu)博(bo)世(shi)集團全資擁有，但獨立(li)進(jin)行業(ye)(ye)務(wu)運(yun)作,提供(gong)工業(ye)(ye)液壓，電(dian)子傳動(dong)(dong)(dong)(dong)與(yu)(yu)控(kong)(kong)制(zhi)，液壓閥(fa)，電(dian)磁閥(fa)，比例閥(fa)，截止閥(fa)，線性傳動(dong)(dong)(dong)(dong)與(yu)(yu)組(zu)裝技術，氣動(dong)(dong)(dong)(dong)，液壓傳動(dong)(dong)(dong)(dong)服務(wu)以及(ji)行走(zou)機(ji)械(xie)液壓方(fang)(fang)面的(de)傳動(dong)(dong)(dong)(dong)與(yu)(yu)控(kong)(kong)制(zhi)解決(jue)方(fang)(fang)案。德國Bosch Rexroth博(bo)世(shi)力士(shi)樂(le)是全球(qiu)先(xian)進(jin)的(de)傳動(dong)(dong)(dong)(dong)與(yu)(yu)控(kong)(kong)制(zhi)專家。力士(shi)樂(le)為(wei)工業(ye)(ye)及(ji)工廠自動(dong)(dong)(dong)(dong)化，行走(zou)機(ji)械(xie)，以及(ji)可再生能源等(deng)領域(yu)的(de)客(ke)戶(hu)提供(gong)傳動(dong)(dong)(dong)(dong)，控(kong)(kong)制(zhi)與(yu)(yu)移動(dong)(dong)(dong)(dong)解決(jue)方(fang)(fang)案；作為(wei)全球(qiu)超過50萬客(ke)戶(hu)的(de)共(gong)同選擇，力士(shi)樂(le)正(zheng)不斷為(wei)客(ke)戶(hu)提供(gong)高質(zhi)量的(de)電(dian)控(kong)(kong)，液壓，氣動(dong)(dong)(dong)(dong)以及(ji)機(ji)電(dian)一體化元件和系統。