PROBLEM TO BE SOLVED: To prevent blowing off of water to upper side upon releasing a valve.SOLUTION: A water supplying device comprises a water supply case 3 arranged in a manner where a pipe 7a into which pressurized water is introduced stands in vertical direction in its inner section, and a water supply valve 4 arranged in the inner section of the water supply case 3. The water supply valve 4 comprises a valve stand 8 arranged on upper edge opening part of the pipe 7a, a valve body 9 which opens and closes the valve stand 8 by moving in axis direction of the pipe 7a, and an operation part 6 comprising a handle 14 for opening and closing the valve body 9. To the water supply valve 4, a blow off prevention cover 30 is attached so as to cover upper side of the water supply valve.
