DIN Standards Committee Heating and Ventilation Technology and their Safety
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; German and English version prEN 448:2023
Abstract
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 pipe, in most cases a steel fitting, polyurethane (PUR) foam thermal insulation and a casing of polyethylene. The fitting assembly may also include the following additional elements: measuring wires, spacers and diffusion barriers. This document covers the following fitting assemblies: bend, tee and reducer. This document applies to fitting assemblies with a minimum design pressure of 1,6 MPa.
Begin
2023-01-30
WI
00107085
Planned document number
DIN EN 448
Project number
04112077
Responsible national committee
NA 041-01-12 AA - District heating and cooling systems (SpA CEN/TC 107 & ISO/TC 341)
Responsible european committee
CEN/TC 107/WG 5 - Fittings and valves
draft standard
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; German and English version prEN 448:2023
2023-08
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