一(yi).三通擋板(ban)的作用

　　三通(tong)擋板(ban)主(zhu)要用在輸送常壓的(de)原煤、煤粉等物料(liao)的(de)管道上，作換向分流用。

　　二.三通擋(dang)板型式

　　三通(tong)(tong)擋(dang)板按(an)操作方式分手動(dong)、氣動(dong)及電(dian)動(dong)。其中(zhong)手動(dong)操作按(an)公稱(cheng)直(zhi)徑(jing)分300x300～500x500mm及DN300～DN500共(gong)6種(zhong)規格;氣動(dong)及電(dian)動(dong)操作按(an)公稱(cheng)直(zhi)徑(jing)分300x300～700x700mm及DN300～DN700共(gong)20種(zhong)規格。三通(tong)(tong)分為擋(dang)板三通(tong)(tong)和套筒式三通(tong)(tong).