| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide opening regulation structure for a regulating valve capable of regulating finely a passing flow rate of a fluid guided from a primary side to a secondary side via a communication part, and a method of manufacturing the same. Ž<P>SOLUTION: The communication part 5 for communicating one of the primary sides or the secondary sides of fluid flow passages 11, 12 with a cylindrical member 2 in a side wall part of a cylindrical member 2 comprises one or a plurality of through holes 5a penetrated through the side wall part of the cylindrical member 2, and a groove part 5b of nonpenetrated-through state formed recessedly along an inner wall part continuously from an opening portion of an inner wall part side of at least one of the through holes 5a, and the through hole 5b is arranged in a valve seat part 4 side of the through hole 5a, in a sliding direction with a valve element 1 slidably moving therealong. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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