壓力機送油閥手動調節適用于各種壓力機、萬能機操作的(de)電動液壓加(jia)荷。符合(he)國家標(biao)準《普通混凝土力學性能實驗方法標(biao)準》，應手動控制加(jia)載速度，并具有(you)加(jia)荷速度指示裝置(zhi)、峰值(zhi)保(bao)持、過載保(bao)護功能，是建(jian)筑、建(jian)材、公路橋梁(liang)等工(gong)程單位(wei)*的(de)試驗檢測設(she)備。

壓力機送油閥手動調節是一個分路式(shi)流(liu)(liu)量調節(jie)閥(fa)(fa)(fa)(fa)，它由(you)一個變節(jie)流(liu)(liu)器和一個定差減(jian)壓(ya)閥(fa)(fa)(fa)(fa)并(bing)聯(lian)組成。進油(you)(you)(you)(you)(you)(you)(you)(you)口接通(tong)(tong)油(you)(you)(you)(you)(you)(you)(you)(you)泵，當(dang)旋(xuan)轉手(shou)柄（1）時(shi)(shi)(shi)，帶(dai)動送(song)油(you)(you)(you)(you)(you)(you)(you)(you)閥(fa)(fa)(fa)(fa)芯（2），可使閥(fa)(fa)(fa)(fa)門(men)有節(jie)奏地打開，此時(shi)(shi)(shi)油(you)(you)(you)(you)(you)(you)(you)(you)泵所供之(zhi)壓(ya)力油(you)(you)(you)(you)(you)(you)(you)(you)通(tong)(tong)過閥(fa)(fa)(fa)(fa)門(men)經過油(you)(you)(you)(you)(you)(you)(you)(you)管(guan)(guan)送(song)至回(hui)(hui)油(you)(you)(you)(you)(you)(you)(you)(you)閥(fa)(fa)(fa)(fa)，流(liu)(liu)量大小(xiao)可以調節(jie)。當(dang)送(song)油(you)(you)(you)(you)(you)(you)(you)(you)閥(fa)(fa)(fa)(fa)右移(yi)時(shi)(shi)(shi)油(you)(you)(you)(you)(you)(you)(you)(you)門(men)小(xiao)，甚(shen)至*關閉(bi)回(hui)(hui)油(you)(you)(you)(you)(you)(you)(you)(you)閥(fa)(fa)(fa)(fa)時(shi)(shi)(shi)則(ze)油(you)(you)(you)(you)(you)(you)(you)(you)泵所供之(zhi)油(you)(you)(you)(you)(you)(you)(you)(you)在送(song)油(you)(you)(you)(you)(you)(you)(you)(you)閥(fa)(fa)(fa)(fa)腔(qiang)內推動，減(jian)壓(ya)閥(fa)(fa)(fa)(fa)的閥(fa)(fa)(fa)(fa)芯套（7）及(ji)閥(fa)(fa)(fa)(fa)芯桿(gan)（9）后移(yi)，當(dang)移(yi)到回(hui)(hui)油(you)(you)(you)(you)(you)(you)(you)(you)管(guan)(guan)位置時(shi)(shi)(shi)，則(ze)油(you)(you)(you)(you)(you)(you)(you)(you)泵所供之(zhi)油(you)(you)(you)(you)(you)(you)(you)(you)與三通(tong)(tong)閥(fa)(fa)(fa)(fa)接通(tong)(tong)，壓(ya)力油(you)(you)(you)(you)(you)(you)(you)(you)即經回(hui)(hui)油(you)(you)(you)(you)(you)(you)(you)(you)管(guan)(guan)路，只(zhi)有當(dang)閥(fa)(fa)(fa)(fa)芯右端的油(you)(you)(you)(you)(you)(you)(you)(you)壓(ya)超過一定限度時(shi)(shi)(shi)才能打開回(hui)(hui)路。