| 摘要 |
PURPOSE: A needle valve for a fire fighting is provided to generate a pressurizing force by means of explosives for a needle valve, manually operated. CONSTITUTION: The needle valve for fire fighting includes; a valve body(11); a manual lever(12), arranged on one side of the valve body(11) so as to be manually moved back and forth; an operating needle(13), whose one end is connected with the manual lever(12) so as to destroy a copper plate of a F-type valve; a flow passage(14) arranged vertically to the operating needle(13); and an explosion portion(15) filled with a powder(15a); wherein an electric circuit(16) is connected with the explosion portion(15), so as to move the operating needle(13) forward, using the pressurizing force of the exploded powder(15a).
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