| 摘要 |
PROBLEM TO BE SOLVED: To prevent close of an air supplying passage, and prevent reduction of air supply capability to an air pressure driving device by arranging a valve element for closing an outlet from an inner side and a coil spring in the vicinity of the outlet of the air supplying passage, and forming an air exhaust passage on a position separated from the valve element. SOLUTION: A valve element 25 for closing an outlet from an inner side is disposed in the vicinity of the outlet of an air supplying passage 26 for supplying compressed air to an air pressure driving device, and a coil spring for energizing the valve element 25 is disposed in the air supplying passage 26, and the air supplying passage 26, with which an exhaust air hose is brought into contact, is formed on a position apart from the valve element 25. When compressed air is exhausted to the air pressure driving device, the valve element 25 will not be cooled. Moisture in the air supplied will not freeze on being brought into contact with the valve element 25, and movement trouble of an air pressure driving tool caused by closing of the compressed air supplying passage 26 due to ices is prevented.
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