KHBK3-PT1/8,KHBK3-PT1/4,KHBK3-PT3/8,KHBK3-PT1/2,KHBK3-PT3/4,KHBK3-PT1,KHBK3-PT1 1/4,KHBK3-PT1 1/2,KHBK3-PT2,二位三通球阀