| 摘要 |
PROBLEM TO BE SOLVED: To provide a chemical spray machine and a valve structure, in which water is surely supplied to a chemical tank with a simple operation while securing a high speed water supply. SOLUTION: The chemical spray machine 1 is provided with a high pressure hose 23 for introducing a pressurized liquid produced by a spray pump 5 into a jet pump 27 in a water source part, a water supply hose 29 for introducing water to the chemical tank 3 from the jet pump 27 and the valve structure 33 composed of two valves 25 and 31 provided respectively to both hoses 23 and 29 and opened and closed one after another.
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