Abstract

This document specifies requirements for factory made thermally insulated bonded steel service valve assemblies for filling, draining, venting and operation purposes for directly buried hot and cold water networks in accordance with EN 13941-1, comprising a steel service valve, steel service pipe, polyurethane (PUR) foam thermal insulation and a casing of polyethylene (PE). This document applies of steel service valve assemblies with an internal pressure of maximum 2,5 MPa. The principles of this document can be applied to thermal insulated bonded steel service valve assemblies with internal pressures higher than 2,5 MPa, provided that special attention is paid to the effects of pressure. The steel service valve assembly can also include the following additional elements: measuring wires, spacers, and diffusion barriers.

Begin

2023-01-30

WI

00107092

Planned document number

DIN EN 488-2

Project number

04111990

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 and district cooling pipes - Bonded pipe systems for directly buried hot and cold water networks - Part 2: Factory made steel valve assembly for draining and venting, polyurethane thermal insulation and a casing of polyethylene; German and English version prEN 488-2:2023
2023-08
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