| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a decompression adjustment apparatus, which is provided with a new means for reducing a leakage path between an entrance and an exit of the adjustment apparatus. <P>SOLUTION: The decompression adjustment apparatus is provided with an adjustment apparatus main body, which has a pipe-shaped part that coaxially matches with a pipe-shaped part of a bonnet screwed to the adjustment apparatus main body. A piston has a bore, which penetrates and extends, and the pipe-shaped part extends toward the inside apart along the axis direction. The pipe-shaped part of the main body attaches a valve seat so as to contact with an inside shoulder part of the piston when the piston moves to an interception position to intercept a fluid, which flows in the adjustment apparatus, in the axis direction for the pipe-shaped part. The bottom of an expanded path portion of the piston fluidly leads with the piston bore at both positions of the piston. However, when the piston positions its disturbance position, it dose not fluidly lead with a high-pressure entry of the main body. If a pressure fluid is not given to the main body entry, a spring ellastically holds the piston at the opening position. <P>COPYRIGHT: (C)2004,JPO</p> |
