| 摘要 |
A valve for pneumatic tires comprising a stem made of plastics and having at least one longitudinal groove on its inner surface and a plunger having a flange, which has at least one protuberance, and arranged so that the plunger is inserted to the stem by fitting the protuberance of the flange into the longitudinal groove of the stem and that the number of component parts is small and assembly is easy.
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