閥門填(tian)(tian)(tian)料(liao)(liao)函又(you)名(ming)填(tian)(tian)(tian)料(liao)(liao)箱，就是(shi)閥桿(gan)部分的(de)密封(feng)裝置，填(tian)(tian)(tian)料(liao)(liao)函通常在閥蓋上部，防止氣體、液(ye)體物料(liao)(liao)等介質從閥桿(gan)和(he)閥蓋的(de)間隙處漏出。填(tian)(tian)(tian)料(liao)(liao)的(de)材料(liao)(liao)和(he)填(tian)(tian)(tian)料(liao)(liao)函的(de)結(jie)構是(shi)保證閥門在填(tian)(tian)(tian)料(liao)(liao)函不滲(shen)漏的(de)重要條件(jian)。

  閥門(men)填(tian)(tian)料(liao)函是由(you)填(tian)(tian)料(liao)壓(ya)蓋、填(tian)(tian)料(liao)和(he)填(tian)(tian)料(liao)墊等組成。要求填(tian)(tian)料(liao)函結構(gou)簡單、密封可靠、裝拆方(fang)便。填(tian)(tian)料(liao)函結構(gou)分(fen)為壓(ya)緊螺(luo)母式、壓(ya)蓋式和(he)波紋管式三種。