prEN 15698-2
(Main)District heating pipes - Bonded twin pipe systems for directly buried hot water networks - Part 2: Factory made fitting and valve assemblies of steel service pipes, polyurethane thermal insulation and a casing of polyethylene
District heating pipes - Bonded twin pipe systems for directly buried hot water networks - Part 2: Factory made fitting and valve assemblies of steel service pipes, polyurethane thermal insulation and a casing of polyethylene
This document specifies requirements and test methods for fittings and valves of factory made thermally insulated bonded twin pipe assemblies for hot water networks in accordance with EN 13941-1, comprising two steel service pipes, in most cases steel fittings and/or steel valves, steel components, polyurethane (PUR) foam thermal insulation and a casing of polyethylene.
NOTE Steel components can be e.g. fixing bars.
The twin pipe assembly can also include the following additional elements: Measuring wires, spacers and diffusion barriers.
This document covers the following assemblies:
- fittings: bends, T-pieces and reducers;
- valves for main line.
This document applies to fitting assemblies with a minimum design pressure of 1,6 MPa and valve assemblies with a minimum design pressure of 2,5 MPa.
Fernwärmerohre - Doppelrohr-Verbundsysteme für direkt erdverlegte Fernwärmenetze - Teil 2: Werkmäßig gefertigtes Verbundformstück und vorgedämmte Absperrarmatur, bestehend aus Stahl-Mediumrohr, einer Wärmedämmung aus Polyurethan und einer Ummantelung aus Polyethylen
Dieses Dokument legt Anforderungen und Prüfverfahren für Formstücke und Armaturen von werkmäßig gedämmten Doppelverbundrohrbaugruppen für Fernwärmenetze in Übereinstimmung mit EN 13941 1 fest, die aus zwei Stahl-Mediumrohren, in den meisten Fällen Stahl-Formstücken und/oder Stahl-Armaturen, Bauteilen aus Stahl, einer Schaumstoffwärmedämmung aus Polyurethan (PUR) und einer Ummantelung aus Polyethylen bestehen.
ANMERKUNG Bauteile aus Stahl können z. B. Fixierungsplatten sein.
Die Doppelrohrbaugruppe kann darüber hinaus die folgenden zusätzlichen Bauteile umfassen: Messdrähte, Abstandhalter und Diffusionsbarrieren.
Dieses Dokument behandelt die folgenden Baugruppen:
- Formstücke: Bögen, T Stücke und Reduzierstücke;
- Armaturen für die Hauptleitung.
Dieses Dokument gilt für Verbundformstücke mit einem Mindestauslegungsdruck von 1,6 MPa und für Armaturenbaugruppen mit einem Mindestauslegungsdruck von 2,5 MPa.
Tuyaux de chauffage urbain - Systèmes bloqués de bitubes pour les réseaux d'eau chaude enterrés directement - Partie 2: Assemblages de raccords et d'appareils de robinetterie manufacturés pour tube de service en acier, isolation thermique en polyuréthane et tube de protection en polyéthylène
Le présent document définit les exigences et les méthodes d’essai applicables aux raccords et appareils de robinetterie d’assemblages de bitubes manufacturés isolés thermiquement pour réseaux d’eau chaude enterrés directement conformément à l’EN 13941-1, comprenant deux tubes de service en acier, dans la plupart des cas des raccords en acier et/ou des appareils de robinetterie en acier, des composants en acier, une isolation thermique en mousse de polyuréthane (PUR) et une protection en polyéthylène.
NOTE Les composants en acier peuvent être, par exemple, des barres de fixation.
L’assemblage de bitubes peut également comprendre les éléments supplémentaires suivants : des câbles de mesure, des entretoises et les barrières anti diffusion.
Le présent document couvre les assemblages suivants :
- les raccords : coudes, en T et les réductions;
- appareils de robinetterie pour la ligne principale.
Cevi za daljinsko ogrevanje - Poviti dvocevni sistemi za neposredno vkopana vročevodna omrežja - 2. del: Tovarniško izdelan sestav fitingov in ventilov iz jeklene cevi, poliuretanske toplotne izolacije in zunanjega polietilenskega plašča
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2023
Cevi za daljinsko ogrevanje - Poviti dvocevni sistemi za neposredno vkopana
vročevodna omrežja - 2. del: Tovarniško izdelan sestav fitingov in ventilov iz
jeklene cevi, poliuretanske toplotne izolacije in zunanjega polietilenskega plašča
District heating pipes - Bonded twin pipe systems for directly buried hot water networks -
Part 2: Factory made fitting and valve assemblies of steel service pipes, polyurethane
thermal insulation and a casing of polyethylene
Fernwärmerohre - Doppelrohr-Verbundsysteme für direkt erdverlegte Fernwärmenetze -
Teil 2: Werkmäßig gefertigtes Verbundformstück und vorgedämmte Absperrarmatur,
bestehend aus Stahl-Mediumrohr, einer Wärmedämmung aus Polyurethan und einer
Ummantelung aus Polyethylen
Tuyaux de chauffage urbain - Systèmes bloqués de bitubes pour les réseaux d'eau
chaude enterrés directement - Partie 2: Assemblages de raccords et d'appareils de
robinetterie manufacturés pour tube de service en acier, isolation thermique en
polyuréthane et tube de protection en polyéthylène
Ta slovenski standard je istoveten z: prEN 15698-2
ICS:
23.040.07 Cevovodi za daljinsko Pipeline and its parts for
ogrevanje in njihovi deli district heat
23.040.10 Železne in jeklene cevi Iron and steel pipes
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2023
ICS 23.040.07; 23.060.01 Will supersede EN 15698-2:2019
English Version
District heating pipes - Bonded twin pipe systems for
directly buried hot water networks - Part 2: Factory made
fitting and valve assemblies of steel service pipes,
polyurethane thermal insulation and one casing of
polyethylene
Tuyaux de chauffage urbain - Systèmes bloqués de Fernwärmerohre - Verbundmanteldoppelrohre für
bitubes pour les réseaux d'eau chaude enterrés direkt erdverlegte Fernwärmenetze - Teil 2:
directement - Partie 2 : Assemblages de raccords et Werkmäßig hergestelltes Verbundformstück und
d'appareils de robinetterie manufacturés pour tube de vorgedämmte Absperrarmatur, bestehend aus Stahl-
service en acier, isolation thermique en polyuréthane Mediumrohr, Polyurethan-Wärmedämmung und
einem Mantel aus Polyethylen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 107.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15698-2:2023 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Requirements . 7
4.1 General . 7
4.2 Steel parts . 7
4.2.1 Specification . 7
4.2.2 Steel valves . 7
4.2.3 Diameter and wall thickness . 7
4.2.4 Surface condition . 7
4.3 Welding of steel parts . 7
4.3.1 Welding of steel service pipes and elements . 7
4.3.2 Welding of fixing bars . 8
4.3.3 Placing of the fixing bars . 8
4.4 Casing . 8
4.5 Polyurethane foam thermal insulation . 8
4.6 Fitting and valve assemblies . 8
4.6.1 General . 8
4.6.2 Thermal insulation series . 8
4.6.3 End alignment of flow and return steel service pipes . 8
4.6.4 Distance between flow and return steel service pipes . 8
4.6.5 End of fitting and valve assemblies. 9
4.6.6 Polyethylene welding . 10
4.6.7 End of stem construction . 10
4.6.8 Tolerances of the main fitting and valve dimensions . 10
4.7 Expected thermal life and long term temperature resistance . 10
4.8 Thermal conductivity . 10
4.9 Surface conditions at delivery . 10
4.10 Measuring wires for surveillance systems . 10
4.11 Resistance of the steel valves to axial forces and bending moments . 10
4.12 Installation, operation and maintenance . 10
5 Test methods . 10
6 Marking . 11
6.1 General . 11
6.2 Steel service pipe . 11
6.3 Steel fitting . 11
6.4 Casing . 11
6.5 Fitting assembly . 11
6.6 Steel valves and valve assembly . 11
6.7 Valves for venting and draining and valve assemblies. 11
Annex A (informative) Guidelines for inspection and testing . 12
A.1 General . 12
A.2 Manufacturer’s type test . 12
A.3 Manufacturer’s quality control . 12
A.4 Additional inspection . 12
A.5 Manufacturer’s responsibility. 12
Annex B (informative) Waste treatment and recycling . 14
Annex C (informative) Examples of twin pipe fitting assemblies . 15
Bibliography . 18
European foreword
This document (prEN 15698-2:2023) has been prepared by Technical Committee CEN/TC 107
“Prefabricated district heating and district cooling pipe system”, the secretariat of which is held by DS.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 15698-2:2019.
The main changes compared to the previous edition are listed below:
— Alignment with the structure of EN 253;
— In alignment with the other standards of CEN/TC 107, explanatory information has been included in
Annex B.
The EN 15698 series, under the title District heating pipes — Bonded twin pipe systems for directly buried
hot water networks, is currently composed of the following parts:
— Part 1: Factory made twin pipe assembly of steel service pipes, polyurethane thermal insulation and one
casing of polyethylene;
— Part 2: Factory made fitting and valve assemblies of steel service pipes, polyurethane thermal insulation
and one casing of polyethylene (this document).
Introduction
This document has been elaborated as a complement to the standards for bonded pipe systems for buried
hot water networks using steel service pipe and polyurethane foam thermal insulation and one casing of
polyethylene.
These standards are:
— EN 253, District heating pipes - Bonded single pipe systems for directly buried hot water networks -
Factory made pipe assembly of steel service pipe, polyurethane thermal insulation and a casing of
polyethylene
— prEN 448, 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
— prEN 488-1, District heating pipes — Bonded single pipe systems for directly buried hot water networks
— Part 1: Factory made steel valve assembly for steel service pipes, polyurethane thermal insulation
and a casing of polyethylene;
— prEN 488-2, District heating and district cooling pipes - Bonded pipe systems for directly buried hot
and cold water networks - Part 2: Factory made steel valve assembly
...
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