EN 488:2015 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
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 factory made prefabricated insulated valve assemblies for continuous operation with hot water at various temperatures in accordance with EN 253:2009+A2:2015, Clause 1 and the valve assemblies with a maximum operation pressure of 25 bar. For higher pressures, additional demands apply. 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 the configuration of the system as it is installed. The design and installation rules are given in EN 13941.
EN 488:2015 Referenced Document
EN 10088-1:2014 Stainless steels - Part 1: List of stainless steels
EN 10204:2004 Metallic products - Types of inspection documents*， 2024-04-20 Update
EN 12266-1:2012 Industrial valves - Testing of metallic valves - Part 1: Pressure tests, test procedures and acceptance criteria - Mandatory requirements
EN 12502-4:2004 Protection of metallic materials against corrosion - Guidance on the assessment of corrosion likelihood in water distribution and storage systems - Part 4: Influencing factors for stainless steels
EN 1333:2006 Flanges and their joints - Pipework components - Definition and selection of PN
EN 14419:2009 District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Surveillance systems
EN 19:2002 Industrial Valves - Marking of Metallic Valves
EN 448:2015 District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Fitting assemblies of steel service pipes, polyurethane thermal insulation and outer casing of polyethylene
EN 736-1:1995 Valves - Terminology - Part 1: Definition of types of valves
EN ISO 6708:1995 Pipework Components - Definition and Selection of DN (Nominal Size) (ISO 6708 : 1995)
EN 488:2015 history
2015EN 488:2015 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
2011EN 488:2011 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 (Incorporates Amendment A1: 2014)
2003EN 488:2003 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
1994EN 488:1994 Preinsulated Bonded Pipe Systems for Underground Hot Water Networks - Steel Valve Assembly for Steel Service Pipes, Polyurethane Thermal Insulation and Outer Casing of Polyethylene