| 摘要 |
PROBLEM TO BE SOLVED: To structure a top water injection type tank such that liquid does not flow out from its lower part when a tank cover is opened and with which it is possible to add liquid from the tank top in a condition where the tank is mounted. SOLUTION: A tank main body 201 having an opening on the top, a cap 21 for opening and closing the opening, and a valve mechanism 40 provided at the bottom of the tank main body 201 having a top valve 42 for closing the top valve open/close face with the closure of the cap 21 and a bottom valve for closing the bottom valve open/close face by external pressure at the downstream of the top valve 42 are provided. The top valve open/close face is positioned as high as or lower than the bottom valve open/close face. By this structure, the water remaining in the inside of the tank can be reduced, and the height of the tank 400 can be made low.
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