CJ/T 447-2014 in English

本标准规定了管道燃气自闭阀的术语和定义，分类及型号，结构与材料，要求，试验方法，检验规则，标志、使用说明书，包装、运输和贮存。
　　
　　本标准适用于使用介质符合GB/T 13611规定的城镇燃气，工作温度不超出-10℃～40℃范围，安装在设计压力小于10kPa的户内燃气管道上，公称尺寸不大于50mm的管道燃气自闭阀。

Scope

This standard specifies the terms and definitions, classification and models, structure and materials, requirements, test methods, inspection rules, signs, instructions for use, packaging, transportation and storage of pipeline gas self-closing valves. This standard is applicable to urban gas whose medium complies with the provisions of GB/T 13611. The operating temperature does not exceed the range of - 10 ℃ ~ 40 ℃. It is installed on indoor gas pipelines with a design pressure less than 10 kPa and the nominal size is not larger than 50 mm. Gas self-closing valve.