DS/EN 488:2011
区域供热管道 直埋热水管网的预绝缘粘合管道系统 用于钢制服务管道、聚氨酯绝热材料和聚乙烯外壳的钢制阀门组件

District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Steel valve assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene

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标准号

DS/EN 488:2011

发布

2011年

发布单位

丹麦标准化协会

当前最新

DS/EN 488:2011

 

 

被代替标准

DS/EN 488-2003

适用范围

This European Standard specifies requirements and test methods for valves of prefabricated thermally insulated valve assemblies comprising a steel valve, rigid polyurethane foam insulation and an outer casing of polyethylene for use in directly buried hot water networks with pre-insulated pipe assemblies in accordance with EN 253.This European Standard applies only to insulated valve assemblies for continuous operation with hot water at various temperatures in accordance with EN 253:2009, Clause 1 and the valve assemblies with a maximum operation pressure of 25 bar. For higher pressures, additional demands apply.Guidelines for quality inspection are given i

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