| 摘要 |
PROBLEM TO BE SOLVED: To provide a projection valve for letting a projection object go capable of remarkably shortening a time from emission switch on up to actual opening of a projection valve, of enhancing reproducibility therefor, of enhancing reproducibility for an arrival time of a projected object up to reaching a target, and to remarkably reduce a failure rate of striking the projected object to a blade other than the target. SOLUTION: This valve is provided with a differential pressure regulating valve mechanism 12 opened and closed by a balance between high pressure gas supplied to a charger and medium pressure gas of lower pressure than it, and an exhaust valve mechanism 16 for releasing the medium pressure gas to reduce pressure. The exhaust valve mechanism 16 comprises a plurality of outside exhaust lines 17 for releasing the medium pressure gas, a plurality of quick solenoid exhaust valves 18 provided in the respective exhaust lines, and a synchronization controller 19 for synchronization-operating the plurality of quick solenoid exhaust valves. COPYRIGHT: (C)2004,JPO
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