RO
SR EN 488:2004
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 preinsulated pipe assemblies in accordance with prEN 253. This standard applies only to insulated valve assemblies for continuous operation with hot water at various temperatures in accordance with clause 1 of prEN 253:2002. Guidelines for quality inspection are given in annex A of this standard. Guidelines for installation of valves are given in annex B of this standard. NOTE For this application the following valve types are commonly used: Ball valves, gate valves, and butterfly valves. NOTE This standard does not include rules for calculation of loads and stresses.
Status :
Withdrawn
Approval date : 8/23/2004
Publish date : 8/24/2004
Withdrawal date : 8/31/2011
Number of pages : 20
ICS : 91.140.10 Central heating systems
Technical Committee : 302 - Space heating appliances, ventilation and room air conditioner
- Replaces SR EN 488:2002
- Replaces (partial) SR EN 19:2003
- Normative reference SR EN 448:2004
- Normative reference SR EN 728:1998
- Normative reference SR EN 736-1:2002
- Normative reference SR ISO 5208:1996
- Replaced by SR EN 488:2011