CJ 266-2008 in English
VALIDSafety regulations for cold potable water meters
- Issued on:2007-12-21
- Implemented on:2008-06-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$117.00
本标准是对国家标准GB/T778.1—1996《冷水水表 第1部分:规范》(eqvISO4064-1:1993《封闭管道中水流量的测量—第1部分:规范》)、GB/T778.3—1996《冷水水表 第3部分:试验方法和试验设备》(idtISO4064-3:1983《封闭管道中水流量的测量—饮用冷水水表—第3部分:试验方法和试验设备》)安全要求方面的具体规定。本标准规定了饮用水冷水水表的安全要求和试验方法。水表本标准适用于常用流量范围为0.6m3/h~4000m3/h(与GB/T778.1—1996第4.1条的规定相应公称口径为15mm~800mm),最大允许工作压力(MAP)大于或等于1MPa和最大允许工作温度(MAT)为30℃的不同计量等级的水表。本标准仅适用于水表表壳等承压件为金属材料的水表。本标准与CJ3064—1997《居民饮用水计量仪表安全规则》相比,主要变化如下:
1)水表口径扩大到800mm;
2)增加了水表表壳的材料要求;
3)管接头和湿式水表罩子的个别尺寸进行了调整;
4)增加了水表材料强度、耐用度和所有接触水的零部件和防护材料的要求。
Scope
This standard specifies the safety rules and test methods for drinking water cold water meters. This standard is applicable to the common flow range of 0.6m/h ~ 4000m/h (corresponding to the provisions of Article 4.1 of GB/T 778.1-1996, the corresponding nominal diameter is 15mm ~ 800mm), the maximum allowable working pressure (MAP) is greater than or equal to 1MPa and Water meters of different measurement levels with a maximum allowable operating temperature (MAT) of 30°C. This standard only applies to water meters with pressure-bearing parts such as water meter cases made of metal materials.

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