NBN EN 448:2019

District heating pipes - Bonded single pipe systems for directly buried hot water networks - Factory made fitting assemblies of steel service pipes, polyurethane thermal insulation and a casing of polyethylene

ACTIVE

About this standard

Languages
German, English and French
Type
NBN
Standards committee
CEN/TC 107
Status
ACTIVE
Publication date
28 November 2019
Replaces
NBN EN 448:2015
ICS Code
23.040.07 (Pipelines and its parts for district heat)
23.040.40 (Metal fittings)
Withdrawn Date

About this training

Summary

This document specifies requirements and test methods for factory made thermally insulated bonded fitting assemblies for hot water networks in accordance with EN 13941 1, comprising a steel service fitting, rigid polyurethane foam thermal insulation and a casing of polyethylene.
The fitting assembly could also include the following additional elements: measuring wires, spacers and diffusion barriers.
This document covers the following fitting assemblies: bend, tee, reducer, single use compensator and anchor.
This document applies to fitting assemblies with a minimum design pressure of 1,6 MPa (overpressure).