BS EN 17415-3:2021
District cooling pipes. Bonded single pipe systems for directly buried cold water networks Factory made steel valve assembly for steel or plastic service pipe, polyurethane thermal insulation and a casing of polyethylene
| Označení normy: | BS EN 17415-3:2021 |
| Počet stran: | 36 |
| Vydáno: | 2021-09-07 |
| ISBN: | 978 0 539 13597 8 |
| Status: | Standard |
BS EN 17415-3:2021
This standard BS EN 17415-3:2021 District cooling pipes. Bonded single pipe systems for directly buried cold water networks is classified in these ICS categories:
- 23.040.99 Other pipeline components
This document specifies requirements, design and test methods for factory made thermally insulated bonded valve assemblies for directly buried district cooling distribution systems, comprising a steel valve from DN 15 to DN 1 200, rigid polyurethane foam insulation and a casing of polyethylene.
The valve assembly can also include the following additional elements: measuring wires, spacers and diffusion barriers.
This document applies only to insulated valve assemblies, for continuous operation with water at various temperatures (1 to 30) °C and a maximum operation pressure of 25 bar.
The design is based on an expected service life with continuous operation of a minimum 50 years.
An expected service life of 50 years presupposes that treated water is used.