EN 751-3:2022+A1:2023

Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 3: Unsintered PTFE tapes and PTFE strings

This document specifies requirements and test methods for unsintered polytetrafluorethylene (PTFE) tapes and polytetrafluorethylene (PTFE) strings (PTFE tapes or PTFE strings, for short) which are suitable for sealing threaded metallic joints as specified in EN 10226-1:2004.
This document covers two classes of PTFE tapes and PTFE strings suitable for fine (F) and coarse (G) threads.
The PTFE tapes and PTFE strings are used as sealing materials for metallic threaded joints in contact with 1st family gases (town gas), 2nd family gases (natural gas) and 3rd family gases (liquefied petroleum gases (LPG)) up to 500 kPa, up to 700 kPa for hot water of heating systems, and up to 20 kPa in gas appliances and their auxiliary equipment. The maximum working pressure covered in this document is 2000 kPa which is relevant to LPG storage. The temperature range is limited to −20 °C to 125 °C.

Dichtmittel für metallene Gewindeverbindungen in Kontakt mit Gasen der 1., 2. und 3. Familie und Heißwasser - Teil 3: Ungesinterte PTFE-Bänder und -Fäden

Dieses Dokument legt Anforderungen und Prüfverfahren für ungesinterte Polytetrafluorethylen-(PTFE)-Bänder und Polytetrafluorethylen-(PTFE)-Fäden (im weiteren als PTFE-Bänder oder PTFE-Fäden bezeichnet) fest, die geeignet sind metallene Gewindeverbindungen abzudichten, wie sie in EN 10226-1:2004 festgelegt sind.
Dieses Dokument behandelt zwei Klassen von PTFE-Bändern und PTFE-Fäden, die für feine (F) und grobe (G) Gewinde geeignet sind.
Die PTFE-Bänder und PTFE-Fäden werden als Dichtmittel für metallene Gewindeverbindungen verwendet, die für den Einsatz in Installationen bis zu einem Druck von 500 kPa bei Gasen der 1. Familie (Stadtgas), der 2. Familie (Erdgas) und der 3. Familie (Flüssiggas) und bis zu einem Druck von 700 kPa bei Heißwasser von Heizungsanlagen vorgesehen sind, außerdem für den Einsatz in Gasgeräten und deren Zusatzeinrichtungen bis zu einem Druck von 20 kPa. Der maximale durch dieses Dokument abgedeckte Betriebsdruck von 2000 kPa betrifft die Flüssiggaslagerung. Der Temperaturbereich ist begrenzt auf-20 °C bis 125 °C.

Matériaux d'étanchéité pour raccords filetés en contact des gaz de la 1ère, 2ème et 3ème famille et de l'eau chaude - Partie 3 : Bandes et cordons en PTFE non fritté

Le présent document prescrit les exigences et les méthodes d'essai auxquelles les bandes en polytétrafluoroéthylène (PTFE) et cordons en polytétrafluoroéthylène (PTFE) non frittés (appelées dans le reste du document bandes PTFE ou cordons PTFE) doivent satisfaire pour étanchéiser les raccords filetés métalliques conformes à l'EN 10226-1 :2004.
Le présent document couvre les deux classes de bandes et cordons en PTFE adaptées aux filetages à pas fins (F) et aux filetages à pas gros (G).
Les bandes et cordons en PTFE sont utilisés sur les installations de gaz de la 1ère famille (gaz de ville), de la 2ème famille (gaz naturel) et de la 3ème famille (gaz de pétrole liquéfiés (GPL)) jusqu'à 500 kPa et jusqu'à 700 kPa pour l'eau chaude des systèmes de chauffage, et jusqu'à 20 kPa pour les appareils à gaz et leur équipement auxiliaire. La pression maximale de fonctionnement couverte par le présent document est de 2000 kPa pour ce qui concerne le stockage du GPL. La plage de température est comprise entre −20 °C & 125 °C.

Tesnilni materiali za kovinske navojne zveze v stiku s plini 1., 2. in 3. družine ter vročo vodo - 3. del: Nesintrani PTFE trakovi in vrvice (vključno z dopolnilom A1)

General Information

• Status: Published
• Publication Date: 12-Dec-2023
• ICS: 23.040.80 - Seals for pipe and hose assemblies
• Technical Committee: CEN/TC 208 - Elastomeric seals for joints in pipework and pipelines
• Drafting Committee: CEN/TC 208/WG 4 - Seals and diaphragms for gas appliances and gas equipment.
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 13-Dec-2023
• Completion Date: 13-Dec-2023
• Directive: 2016/426 - REGULATION (EU) 2016/426 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 9 March 2016 on appliances burning gaseous fuels and repealing Directive 2009/142/EC
• Mandate: M/595 - [C(2023)4789] - Commission Implementing Decision of 20.7.2023 on a standardisation reques as regards gas appliances and fittings in support of Regulation (EU) 2016/426 of the European Parliament and of the Council
• Ref Project: SIST EN 751-3:2022+A1:2024 - Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 3: Unsintered PTFE tapes and PTFE strings

Relations

• Merged From: EN 751-3:2022 - Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 3: Unsintered PTFE tapes and PTFE strings
• Effective Date: 18-Oct-2023

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 751-3:2022+A1:2024
01-februar-2024
Tesnilni materiali za kovinske navojne zveze v stiku s plini 1., 2. in 3. družine ter
vročo vodo - 3. del: Nesintrani PTFE trakovi in vrvice (vključno z dopolnilom A1)
Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family
gases and hot water - Part 3: Unsintered PTFE tapes and PTFE strings
Dichtmittel für metallene Gewindeverbindungen in Kontakt mit Gasen der 1., 2. und 3.
Familie und Heißwasser - Teil 3: Ungesinterte PTFE-Bänder und -Fäden
Matériaux d'étanchéité pour raccords filetés en contact des gaz de la 1ère, 2ème et
3ème famille et de l'eau chaude - Partie 3 : Bandes et cordons en PTFE non fritté
Ta slovenski standard je istoveten z: EN 751-3:2022+A1:2023
ICS:
23.040.80 Tesnila za cevne zveze Seals for pipe and hose
assemblies
83.140.50 Tesnila Seals
SIST EN 751-3:2022+A1:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 751-3:2022+A1:2024

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SIST EN 751-3:2022+A1:2024


EN 751-3:2022+A1
EUROPEAN STANDARD

NORME EUROPÉENNE

December 2023
EUROPÄISCHE NORM
ICS 23.040.80 Supersedes EN 751-3:2022
English Version

Sealing materials for metallic threaded joints in contact
with 1st, 2nd and 3rd family gases and hot water - Part 3:
Unsintered PTFE tapes and PTFE strings
Matériaux d'étanchéité pour raccords filetés en contact Dichtmittel für metallene Gewindeverbindungen in
des gaz de la 1ère, 2ème et 3ème famille et de l'eau Kontakt mit Gasen der 1., 2. und 3. Familie und
chaude - Partie 3 : Bandes et cordons en PTFE non Heißwasser - Teil 3: Ungesinterte PTFE-Bänder und -
fritté Fäden
This European Standard was approved by CEN on 27 April 2022 and includes Amendment approved by CEN on 11 October
2023.

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. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.

This European Standard exists 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.





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. EN 751-3:2022+A1:2023 E
worldwide for CEN national Members.

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SIST EN 751-3:2022+A1:2024
EN 751-3:2022+A1:2023 (E)
Contents Page

European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Differentiation and classification of PTFE tapes and PTFE strings . 6
4.1 Differentiation . 6
4.2 Classification . 6
5 Requirements . 7
5.1 Requirements to be met
...