它(ta)在液壓(ya)(ya)(ya)(ya)設(she)備中(zhong)主要起(qi)定(ding)(ding)(ding)壓(ya)(ya)(ya)(ya)溢(yi)流(liu)作(zuo)用(yong)和(he)安全保護作(zuo)用(yong)。定(ding)(ding)(ding)量(liang)(liang)泵(beng)節流(liu)調(diao)節系(xi)統(tong)中(zhong)，定(ding)(ding)(ding)量(liang)(liang)泵(beng)提供的是恒定(ding)(ding)(ding)流(liu)量(liang)(liang)。當系(xi)統(tong)壓(ya)(ya)(ya)(ya)力增大時，會使流(liu)量(liang)(liang)需(xu)求減(jian)小。此(ci)時溢(yi)流(liu)閥(fa)開啟，使多余流(liu)量(liang)(liang)溢(yi)回(hui)油(you)箱(xiang)，保證溢(yi)流(liu)閥(fa)進口壓(ya)(ya)(ya)(ya)力，即泵(beng)出口壓(ya)(ya)(ya)(ya)力恒定(ding)(ding)(ding)(閥(fa)口常隨壓(ya)(ya)(ya)(ya)力波動開啟)。系(xi)統(tong)正常工作(zuo)時，閥(fa)門關(guan)閉。只有負(fu)載超過(guo)(guo)規(gui)定(ding)(ding)(ding)的極限(xian)(系(xi)統(tong)壓(ya)(ya)(ya)(ya)力超過(guo)(guo)調(diao)定(ding)(ding)(ding)壓(ya)(ya)(ya)(ya)力)時開啟溢(yi)流(liu)，進行過(guo)(guo)載保護，使系(xi)統(tong)壓(ya)(ya)(ya)(ya)力不再增加(通常使溢(yi)流(liu)閥(fa)的調(diao)定(ding)(ding)(ding)壓(ya)(ya)(ya)(ya)力比系(xi)統(tong)很高工作(zuo)壓(ya)(ya)(ya)(ya)力高10%~20%)。

芬蘭HYTAR成(cheng)立(li)已有幾十年(nian)之(zhi)久(jiu)，是先進(jin)的(de)(de)(de)油液(ye)(ye)(ye)壓(ya)和(he)(he)水液(ye)(ye)(ye)壓(ya)系統元(yuan)件的(de)(de)(de)生產(chan)(chan)商和(he)(he)進(jin)口商。該公司的(de)(de)(de)產(chan)(chan)品涵蓋高(gao)品質的(de)(de)(de)液(ye)(ye)(ye)壓(ya)元(yuan)件，在油液(ye)(ye)(ye)壓(ya)方面如：閥，泵(beng)，馬達以(yi)及(ji)(ji)標準(zhun)和(he)(he)定制液(ye)(ye)(ye)壓(ya)缸；在水液(ye)(ye)(ye)壓(ya)方面如定制缸，泵(beng)機組，閥站和(he)(he)整套(tao)交匙系統。從單個部件到完整的(de)(de)(de)系統，HYTAR都會按照圖紙和(he)(he)客戶的(de)(de)(de)需求為OEM客戶以(yi)及(ji)(ji)行業客戶提供(gong)可(ke)靠的(de)(de)(de)產(chan)(chan)品。