| 摘要 |
PROBLEM TO BE SOLVED: To provide a mixer without the need of attaching a valve or the like to fire extinguishing piping.SOLUTION: The mixer 10 includes: a ball valve 15 provided with a through-port 16 formed in a T shape; and a valve holder 11 which stores the ball valve 15 turnably inside a valve chamber 18, has first and second piping connection ports 12, 13 provided on both sides of the valve chamber 18 around the same axis, and has a third piping connection port 14 that extends in a direction perpendicular to the through-port 16 in the horizontal direction of the T-shaped through-port 16 of the ball valve 15 in the state of being constantly communicated with the through-port 16, and for which the through-port 16 in the horizontal direction of the T-shaped through-port 16 and the first and second piping connection ports 12, 13 are communicated when the ball valve 15 is turned to a predetermined position. |
