| 摘要 |
PROBLEM TO BE SOLVED: To provide a spray gun in which a liquid is circulated to be supplied and is switched to be sprayed by a quick switching action. SOLUTION: A liquid supply port 7 and a liquid return port 8 are formed respectively at a position shifted in the moving direction of a needle valve 5 for opening and closing a liquid spray port 4, a valve mechanism 47 is provided in the middle of a flow passage through which the liquid supply port 7 and the liquid return port 8 are communicated with each other and the flow of the liquid supplied from the liquid supply port 7 is switched to the liquid return port 8 side or the liquid spray port 4 side by the movement of the needle valve. COPYRIGHT: (C)2006,JPO&NCIPI
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