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氣動(dong)三(san)(san)通(tong)(tong)燃氣球閥有T型(xing)(xing)和L型(xing)(xing)。T型(xing)(xing)能使三(san)(san)條(tiao)正交的(de)管道(dao)相互(hu)聯通(tong)(tong)和切(qie)斷第三(san)(san)條(tiao)通(tong)(tong)道(dao)，起(qi)(qi)分流、合流作(zuo)用(yong)。L三(san)(san)通(tong)(tong)球閥型(xing)(xing)只(zhi)能連接相互(hu)正交的(de)兩條(tiao)管道(dao)，不(bu)能同(tong)時保(bao)持第三(san)(san)條(tiao)管道(dao)的(de)相互(hu)連通(tong)(tong)，只(zhi)起(qi)(qi)分配(pei)作(zuo)用(yong)。