QC/T 674-2007 in English

本标准规定了汽车用压缩天然气电池阀（定义见GB/T17895）产品型式合基本参数、试验方法、检验规则、标志、包装、运输及储存。
本标准适用了额定工作压力不大于20MPA（本标准所述压力均指表压）、环境温度为-40℃～+120℃相对湿度为5％～100％的工作环境条件下，以符合GB18047要求的汽车用压缩天然气为工作介质，再燃气汽车的压缩天然气供给系统中实现开闭控制功能的电磁阀。

Scope

This standard specifies the product type and basic parameters, requirements, test methods, inspection rules and markings, packaging, transportation and storage of compressed natural gas solenoid valves for automobiles (as defined in GB/T 17895). This standard is applicable to working environment conditions where the working pressure is not greater than 2OMPa (the pressures mentioned in this standard refer to gauge pressure), the ambient temperature is -40 ℃ ~ +120 ℃, and the relative humidity is 5% ~ 100%, in order to comply with GB 18047 The required compressed natural gas for automobiles is used as the working medium, and the solenoid valve realizes the opening and closing control function in the compressed natural gas supply system of gas automobiles.