| 摘要 |
PROBLEM TO BE SOLVED: To separate the bathtub side from the hot water side by achieving dropping of hot water from the hot water supply side into the bathtub. SOLUTION: There is provided a separation chamber 16 on a hot water supply passage from a hot water heater side to a bathtub. There are provided in the separation chamber a valve hole passage 24 communicated with the hot water heater side, a valve hole 41, and a passage 45 communicated with a bathtub side. An atmosphere release valve 27 is provided on the lower side of a check valve 26. The atmosphere release valve 27 is held by the check valve 26 with the engagement between a flange 33 and an engagement piece 40, and a gap 43 is provided between the flange 33 and the engagement piece 40. A pilot valve 36 is provided on the side of the valve 42, and the pilot valve 36 is opened and closed with a valve 37 provided on the lower end of a trunk part 32 of the check valve 26. The check valve 26 closes the valve hole passage 24 with upward biassing force of a spring 44. Upon dropping of hot water the check valve 26 is pushed down with hot water supply water pressure, and the valve hole 41 is closed with the valve 42, and further the pilot valve hole 36 is closed with the valve 37. Upon interruption of the dropping of hot water the check valve 26 is moved upwardly with the upward force of the spring 44, and the valve 42 is upwardly moved after the pilot valve hole 36 is opened. |
