The tubular section (16) one end the tubular section (16) the cock which is made to fit has sealed with (5), in the cock (5), the 1st channel (33) and the 2nd channel (36) we to form, the connector itself in (2), the 1st hole (37), the 2nd hole (43), the 3rd hole (38) and the 4th hole (44) form, the 1st channel (33) through the cock (5) with revolution, the tubular section (16) the internal space (16a) with 1stThe hole (37) with the configuration which is bonded and, the 1st channel (33) through, the tubular section (16) the internal space (16a) with the 2nd hole (43) with it bonds, at the same time the 2nd channel (36) through, the 3rd hole (38) with the 4th hole (44) with the configuration which is bonded it is change possible.管状部(16)の一端は、管状部(16)に嵌合させたコック(5)で封止しており、コック(5)に、第1の流路(33)及び第2の流路(36)を形成しており、コネクタ本体(2)に、第1の孔(37)、第2の孔(43)、第3の孔(38)及び第4の孔(44)を形成しており、コック(5)の回転により、第1の流路(33)を介して、管状部(16)の内部空間(16a)と第1の孔(37)とをつなぐ設定と、第1の流路(33)を介して、管状部(16)の内部空間(16a)と第2の孔(43)とをつなぎ、かつ第2の流路(36)を介して第3の孔(38)と第4の孔(44)とをつなぐ設定とを切換え可能である。
