標準號：BS EN 488-2011
中文標準名稱：區域供暖管道.直埋式熱水供應網用預先隔熱包覆的管道系統.聚氨基甲酸乙酯熱絕緣和聚乙烯外覆層鋼管用鋼閥門組件
英文標準名稱：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
標準類型：Q83
發布日期：2011/4/30 12:00:00
實施日期：2011/4/30 12:00:00
中國標準分類號：Q83
國際標準分類號：23.060.01;91.140.60
引用標準：EN 19;EN 253-2009;EN 448-2009;EN 736-1-1995;EN 10204-2004;EN 12266-1-2003;EN 13941-2009+A1-2010;EN 14419
適用范圍：This European Standard specifies requirements and test methods for valves of prefabricated thermallyinsulated valve assemblies comprising a steel valve, rigid polyurethane foam insulation and an outer casing ofpolyethylene for use in directly buried hot water networks with pre-insulated pipe assemblies in accordancewith EN 253.This European Standard applies only to insulated valve assemblies for continuous operation with hot water atvarious temperatures in accordance with EN 253:2009, Clause 1 and the valve assemblies with a maximumoperation pressure of 25 bar. For higher pressures, additional demands apply.Guidelines for quality inspection are given in Annex A of this European Standard.NOTE For this application, the following valve types are commonly used: ball valves, gate valves, and butterfly valves.This European Standard does not include calculation rules for loads and stresses. These depend on theconfiguration of the system as it is installed. The design and installation rules are given in EN13941:2009+A1:2010.