轮胎阀 - 尺寸和名称

[中文适用范围]： 本文件定义了管阀和无管阀的基本尺寸和名称。 附件 B 给出了 ISO 名称与以下机构建立的名称之间的对应关系： ——TRA（轮胎和轮辋协会）； ——ETRTO（欧洲轮胎和轮辋技术组织）； ——JATMA（日本汽车轮胎制造商协会）。 在本文件的其余部分中，除标明公差的情况外，所有尺寸均以其标称值给出。 未指定螺纹长度的阀杆的螺纹长度为最大可能长度。 注：阀门图纸并非全部采用相同比例。 [外文原描述]： This document defines the essential dimensions and the designation of tube valves and tubeless valves. Annex B gives the correspondence between ISO designations and the designations established by: — TRA (Tire and Rim Association Inc.); — ETRTO (European Tyre and Rim Technical Organisation); — JATMA (The Japan Automotive Tyre Manufacturer's Association, Inc.). In the remainder of this document, all the dimensions are given at their nominal value except in cases where the tolerances are indicated. The threaded length of valve stems for which no thread length is specified is the maximum possible length. NOTE The drawings for valves are not all at the same scale.