PROBLEM TO BE SOLVED: To provide a three-way cock in which a rotation range of a cock is further restricted by a simple method.SOLUTION: A cock body 2 includes a cylindrical part 15, a first port 11, a second port 12, and a third port 13 communicated with the cylindrical part, and a cock 20 inserted rotatably into the cylindrical part. By rotating the cock in the cylindrical part, a rotational position of the cock can be switched at least to a first position in which the second port and the third port are communicated with each other, a second position in which the first port and the third port are communicated with each other, and a third position in which the first port and the second port are communicated with each other. A stopper 4 is attached to the cock body, which has a first restriction part 45a and a second restriction part 45b for restricting the rotation range of the cock by contacting the cock.COPYRIGHT: (C)2015,JPO&INPIT
