電(dian)動絲口三通(tong)球(qiu)(qiu)閥可以(yi)為L型(xing)和T型(xing)，電(dian)動L型(xing)球(qiu)(qiu)閥用(yong)于(yu)介質(zhi)流(liu)(liu)向的切換，能(neng)使相(xiang)互(hu)垂直的兩個(ge)(ge)通(tong)道(dao)連接；電(dian)動T型(xing)三通(tong)球(qiu)(qiu)閥用(yong)于(yu)介質(zhi)分(fen)流(liu)(liu)、合流(liu)(liu)及流(liu)(liu)向切換，T型(xing)可以(yi)使三個(ge)(ge)通(tong)道(dao)相(xiang)互(hu)連通(tong)或其中的兩個(ge)(ge)通(tong)道(dao)連通(tong)。適用(yong)于(yu)輕(qing)工機械體積小(xiao)空間(jian)窄(zhai)的場(chang)合。