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直通(tong)(tong)式(shi)氨用(yong)(yong)(yong)截(jie)止(zhi)閥(fa)(fa)流(liu)(liu)式(shi)流(liu)(liu)體(ti)(ti)阻力較(jiao)小(xiao)，多用(yong)(yong)(yong)于(yu)含固(gu)體(ti)(ti)顆粒或粘(zhan)度大的流(liu)(liu)體(ti)(ti)。直角(jiao)式(shi)閥(fa)(fa)體(ti)(ti)多采(cai)(cai)用(yong)(yong)(yong)鍛(duan)造，適用(yong)(yong)(yong)于(yu)較(jiao)小(xiao)通(tong)(tong)經、較(jiao)高壓力的的截(jie)止(zhi)閥(fa)(fa)。 中通(tong)(tong)法蘭為方形結(jie)構，閥(fa)(fa)桿采(cai)(cai)用(yong)(yong)(yong)間(jian)桿連(lian)接。