| 摘要 |
PROBLEM TO BE SOLVED: To provide a tough beer valve manufacturing method in which a beer flow path is formed wide, the in-barrel cleaning before filling a beer and filling the beer into the barrel can be carried out in a short time and the foaming of beer is little. SOLUTION: The peripheral edge of a metal plate main body section 10 of the shape protruding a plurality of legs 14 of the long and narrow band shape on the outer periphery of a main body section 10 are bent to the back side and bases of legs 14 are bent to the surface side and curved thereon during the time before the start and after the completion of a process for forming the main body section 10 into the cap shape, and then the bases of the legs 14 are bent again to the back side.
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