EN 1555-3:2021
(Main)Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 3: Fittings
Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 3: Fittings
This document specifies the characteristics of fusion fittings made from polyethylene (PE) as well as of mechanical fittings for piping systems in the field of the supply of gaseous fuels.
It also specifies the test parameters for the test methods referred to in this document.
In conjunction with Parts 1, 2, 4 and 5 of EN 1555, it is applicable to PE fittings, their joints and to joints with components of PE and other materials intended to be used under the following conditions:
a) a maximum operating pressure, MOP, up to and including 10 bar1 at a reference temperature of 20 °C for design purposes;
b) an operating temperature between −20 °C and 40 °C.
NOTE 1 For operating temperatures between 20 °C and 40 °C, derating coefficients are defined in EN 1555-5:2021.
EN 1555 (all parts) covers a range of maximum operating pressures and gives requirements concerning colours.
NOTE 2 It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes.
This document is applicable for fittings of the following types:
a) electrofusion socket fittings;
b) electrofusion saddle fittings;
c) spigot end fittings (for butt fusion using heated tools and electrofusion socket fusion);
d) mechanical fittings.
NOTE 3 The fittings can be, for example, in the form of couplers, equal and reduced tees, reducers, saddles, elbows or caps.
Kunststoff-Rohrleitungssysteme für die Gasversorgung - Polyethylen (PE) - Teil 3: Formstücke
Dieses Dokument legt die Eigenschaften von Formstücken aus Polyethylen (PE) für Schweißverbindungen und von Formstücken für mechanische Verbindungen für Rohrleitungssysteme im Bereich der Versorgung mit gasförmigen Brennstoffen fest.
Es legt auch die Prüfparameter für die Prüfverfahren fest, auf die in diesem Dokument verwiesen wird.
In Verbindung mit Teil 1, Teil 2, Teil 4 und Teil 5 von EN 1555 gilt es für Formstücke aus PE, deren Verbindungen untereinander sowie mit Rohrleitungsteilen aus PE und anderen Werkstoffen, die für die Verwendung unter den folgenden Bedingungen vorgesehen sind:
a) für einen maximal zulässigen Betriebsdruck MOP (en: maximum operating pressure) von höchstens 10 bar bei einer Bezugstemperatur von 20 °C für Bemessungszwecke;
b) für eine Betriebstemperatur zwischen −20 °C und 40 °C.
ANMERKUNG 1 Für Betriebstemperaturen zwischen 20 °C und 40 °C sind Minderungsfaktoren festgelegt in EN 1555 5:2021.
EN 1555 (alle Teile) deckt einen Bereich von maximal zulässigen Betriebsdrücken ab und enthält Anforderungen bezüglich Farben.
ANMERKUNG 2 Es liegt in der Verantwortung des Auftraggebers oder Planers, aus diesen Gesichtspunkten die geeignete Auswahl zu treffen, unter Berücksichtigung ihrer speziellen Anforderungen und jeglicher maßgebender nationaler Festlegungen und Verfahrensweisen oder Vorschriften für die Verlegung.
Dieses Dokument ist anwendbar für die folgenden Arten von Formstücken:
a) Heizwendel-Schweißmuffen;
b) Heizwendel-Schweißsattel;
c) Formstücke mit Schweißenden (für Heizelementstumpfschweißen unter Verwendung von Heizelementen und Heizwendel-Schweißmuffen);
d) Formstücke für mechanische Verbindungen (mechanische Rohrverbinder).
ANMERKUNG 3 Die Formstücke können beispielsweise als Verbindungsstücke, T Stücke mit gleichem und reduziertem Abzweig, Reduzierstücke, Sattel, Winkelstücke oder Verschlussstücke ausgeführt sein.
Systèmes de canalisations en plastique pour la distribution de combustibles gazeux - Polyéthylène (PE) - Partie 3 : Raccords
Le présent document spécifie les caractéristiques des raccords soudables en polyéthylène (PE) ainsi que celles des raccords mécaniques fabriqués pour les systèmes de canalisations destinées à la
distribution de combustibles gazeux.
Il spécifie également les paramètres d’essai pour les méthodes d’essai référencées dans le présent
document.
Conjointement avec les Parties 1, 2, 4 et 5 de l’EN 1555, il s’applique aux raccords en PE et à leurs assemblages, ainsi qu’aux assemblages avec des composants en PE et en d’autres matières destinés à
être utilisés dans les conditions suivantes :
a) une pression maximale de service, MOP, inférieure ou égale à 10 bar1, à une température de référence de 20 °C pour les besoins des calculs ;
b) une température de service comprise entre –20 °C et 40 °C.
NOTE 1 Pour des températures de service comprises entre 20 °C et 40 °C, les facteurs de réduction sont définis dans l’EN 1555-5:2021.
L’EN 1555 (toutes les parties) couvre une gamme de pressions maximales de service et donne les exigences concernant les couleurs.
NOTE 2 Il est de la responsabilité de l’acheteur ou du prescripteur d’effectuer les choix appropriés à partir de ces données, en tenant compte des exigences particulières et de toute réglementation nationale applicable, ainsi que des pratiques ou codes de pose.
Le présent document est applicable aux raccords des types suivants :
a) raccords à emboîture électrosoudable ;
b) selles électrosoudables ;
c) raccords à bouts mâles (pour soudage bout à bout à l’aide d’outils chauffants et pour soudage par
emboîture électrosoudable) ;
d) raccords mécaniques.
NOTE 3 Les raccords peuvent être, par exemple des manchons, des tés égaux, des tés réduits, des réductions, des selles, des coudes ou des bouchons.
Cevni sistemi iz polimernih materialov za oskrbo s plinastimi gorivi - Polietilen (PE) - 3. del: Fitingi
General Information
Relations
Frequently Asked Questions
EN 1555-3:2021 is a standard published by the European Committee for Standardization (CEN). Its full title is "Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 3: Fittings". This standard covers: This document specifies the characteristics of fusion fittings made from polyethylene (PE) as well as of mechanical fittings for piping systems in the field of the supply of gaseous fuels. It also specifies the test parameters for the test methods referred to in this document. In conjunction with Parts 1, 2, 4 and 5 of EN 1555, it is applicable to PE fittings, their joints and to joints with components of PE and other materials intended to be used under the following conditions: a) a maximum operating pressure, MOP, up to and including 10 bar1 at a reference temperature of 20 °C for design purposes; b) an operating temperature between −20 °C and 40 °C. NOTE 1 For operating temperatures between 20 °C and 40 °C, derating coefficients are defined in EN 1555-5:2021. EN 1555 (all parts) covers a range of maximum operating pressures and gives requirements concerning colours. NOTE 2 It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes. This document is applicable for fittings of the following types: a) electrofusion socket fittings; b) electrofusion saddle fittings; c) spigot end fittings (for butt fusion using heated tools and electrofusion socket fusion); d) mechanical fittings. NOTE 3 The fittings can be, for example, in the form of couplers, equal and reduced tees, reducers, saddles, elbows or caps.
This document specifies the characteristics of fusion fittings made from polyethylene (PE) as well as of mechanical fittings for piping systems in the field of the supply of gaseous fuels. It also specifies the test parameters for the test methods referred to in this document. In conjunction with Parts 1, 2, 4 and 5 of EN 1555, it is applicable to PE fittings, their joints and to joints with components of PE and other materials intended to be used under the following conditions: a) a maximum operating pressure, MOP, up to and including 10 bar1 at a reference temperature of 20 °C for design purposes; b) an operating temperature between −20 °C and 40 °C. NOTE 1 For operating temperatures between 20 °C and 40 °C, derating coefficients are defined in EN 1555-5:2021. EN 1555 (all parts) covers a range of maximum operating pressures and gives requirements concerning colours. NOTE 2 It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes. This document is applicable for fittings of the following types: a) electrofusion socket fittings; b) electrofusion saddle fittings; c) spigot end fittings (for butt fusion using heated tools and electrofusion socket fusion); d) mechanical fittings. NOTE 3 The fittings can be, for example, in the form of couplers, equal and reduced tees, reducers, saddles, elbows or caps.
EN 1555-3:2021 is classified under the following ICS (International Classification for Standards) categories: 23.040.45 - Plastics fittings. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 1555-3:2021 has the following relationships with other standards: It is inter standard links to EN 1555-3:2010+A1:2012, EN 1555-3:2025. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN 1555-3:2021 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2021
Nadomešča:
SIST EN 1555-3:2010+A1:2013
Cevni sistemi iz polimernih materialov za oskrbo s plinastimi gorivi - Polietilen
(PE) - 3. del: Fitingi
Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 3:
Fittings
Kunststoff-Rohrleitungssysteme für die Gasversorgung - Polyethylen (PE) - Teil 3:
Formstücke
Systèmes de canalisations en plastique pour la distribution de combustibles gazeux -
Polyéthylène (PE) - Partie 3 : Raccords
Ta slovenski standard je istoveten z: EN 1555-3:2021
ICS:
83.140.30 Polimerne cevi in fitingi za Plastics pipes and fittings for
snovi, ki niso tekočine non fluid use
91.140.40 Sistemi za oskrbo s plinom Gas supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 1555-3
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2021
EUROPÄISCHE NORM
ICS 23.040.45 Supersedes EN 1555-3:2010+A1:2012
English Version
Plastics piping systems for the supply of gaseous fuels -
Polyethylene (PE) - Part 3: Fittings
Systèmes de canalisations en plastique pour la Kunststoff-Rohrleitungssysteme für die Gasversorgung
distribution de combustibles gazeux - Polyéthylène - Polyethylen (PE) - Teil 3: Formstücke
(PE) - Partie 3 : Raccords
This European Standard was approved by CEN on 7 June 2021.
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, Turkey 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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1555-3:2021 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 9
4 Symbols and abbreviations . 10
5 Material . 10
5.1 Compound for fittings . 10
5.2 Material for non-polyethylene parts . 10
5.2.1 General . 10
5.2.2 Metal parts . 10
5.2.3 Sealing materials . 10
5.2.4 5.2.4 Other materials . 11
6 General characteristics . 11
6.1 Appearance . 11
6.2 Colour . 11
6.3 Design . 11
6.4 Appearance of factory made joints . 11
6.5 Electrical characteristics for electrofusion fittings . 11
7 Geometric characteristics . 12
7.1 Measurement of dimensions. 12
7.2 Dimensions of electrofusion socket fittings . 12
7.2.1 Diameters and lengths of electrofusion sockets . 12
7.2.2 Wall thicknesses . 14
7.2.3 Out-of-roundness of the bore of a fitting (at any point). 14
7.2.4 Spigots . 14
7.2.5 Other dimensions. 14
7.3 Dimensions of electrofusion saddle fittings . 15
7.4 Dimensions of spigot end fittings . 15
7.4.1 Diameters and lengths . 15
7.4.2 Wall thickness of the fusion end . 18
7.4.3 Wall thickness of the fitting body. 18
7.4.4 Other dimensions. 18
7.5 Design and dimensions of mechanical fittings . 18
7.5.1 General . 18
7.5.2 Mechanical fittings with polyethylene spigot ends . 18
7.5.3 Mechanical fittings with polyethylene electrofusion sockets . 18
7.5.4 Threads . 18
8 Mechanical characteristics . 18
8.1 General . 18
8.2 Requirements . 19
8.3 Performance requirements . 22
9 Physical characteristics . 23
9.1 Conditioning . 23
9.2 Requirements . 23
10 Performance requirements . 23
11 Technical file . 24
12 Marking . 24
12.1 General . 24
12.2 Minimum required marking of fittings . 25
12.3 Additional marking . 25
12.4 Fusion system recognition . 25
13 Delivery conditions . 26
Annex A (informative) Examples of typical terminal connection for electrofusion fittings . 27
Annex B (normative) Short-term pressure test method . 30
Annex C (normative) Tensile test for fitting/pipe assemblies . 32
Bibliography . 33
European foreword
This document (EN 1555-3:2021) has been prepared by Technical Committee CEN/TC 155 “Plastics
piping systems and ducting systems”, the secretariat of which is held by NEN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by January 2022, and conflicting national standards shall
be withdrawn at the latest by January 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 1555-3:2010+A1:2012.
In comparison with the previous version, the following technical modifications have been introduced:
— PE 100-RC type materials with enhanced resistance to slow crack growth have been added.
— Annex A of EN 1555-1:2021 now discusses the performance of this type of material and gives
additional information for non-conventional installation techniques.
— Additional information for non-conventional installation techniques has been added.
— The size range has been increased to 800 mm diameter.
— Test methods have been updated.
System Standards are based on the results of the work being undertaken in ISO/TC 138 “Plastics pipes,
fittings and valves for the transport of fluids”, which is a Technical Committee of the International
Organization for Standardization (ISO).
They are supported by separate standards on test methods to which references are made throughout the
System Standard.
The System Standards are consistent with general standards on functional requirements and on
recommended practice for installation.
EN 1555 consists of the following parts:
— EN 1555-1, Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) —
Part 1: General;
— EN 1555-2, Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) — Part 2: Pipes;
— EN 1555-3, Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) —
Part 3: Fittings (this standard);
— EN 1555-4, Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) — Part 4: Valves;
— EN 1555-5, Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) — Part 5: Fitness
for purpose of the system;
— CEN/TS 1555-7, Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) —
Part 7: Guidance for assessment of conformity.
NOTE EN 12007-2 [1], prepared by CEN/TC 234 “Gas infrastructure”, deals with the recommended practice
for installation of plastics pipes system in accordance with EN 1555 (all parts).
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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, Turkey and the United
Kingdom.
Introduction
This document, specifies the requirements for a piping system and its components made from
polyethylene (PE) and which is intended to be used for the supply of gaseous fuels.
Requirements and test methods for material and components, other than fittings, are specified in
EN 1555-1:2021, EN 1555-2:2021 and EN 1555-4:2021.
Characteristics for fitness for purpose are covered in EN 1555-5:2021. CEN/TS 1555-7 [2] gives guidance
for assessment of conformity. Recommended practice for installation is given in EN 12007-2 [1] prepared
by CEN/TC 234.
This part of EN 1555 covers the characteristics of fittings.
1 Scope
This document specifies the characteristics of fusion fittings made from polyethylene (PE) as well as of
mechanical fittings for piping systems in the field of the supply of gaseous fuels.
It also specifies the test parameters for the test methods referred to in this document.
In conjunction with Parts 1, 2, 4 and 5 of EN 1555, it is applicable to PE fittings, their joints and to joints
with components of PE and other materials intended to be used under the following conditions:
a) a maximum operating pressure, MOP, up to and including 10 bar at a reference temperature of 20 °C
for design purposes;
b) an operating temperature between −20 °C and 40 °C.
NOTE 1 For operating temperatures between 20 °C and 40 °C, derating coefficients are defined in
EN 1555-5:2021.
EN 1555 (all parts) covers a range of maximum operating pressures and gives requirements concerning
colours.
NOTE 2 It is the responsibility of the purchaser or specifier to make the appropriate selections from these
aspects, taking into account their particular requirements and any relevant national regulations and installation
practices or codes.
This document is applicable for fittings of the following types:
a) electrofusion socket fittings;
b) electrofusion saddle fittings;
c) spigot end fittings (for butt fusion using heated tools and electrofusion socket fusion);
d) mechanical fittings.
NOTE 3 The fittings can be, for example, in the form of couplers, equal and reduced tees, reducers, saddles,
elbows or caps.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 682, Elastomeric Seals - Materials requirements for seals used in pipes and fittings carrying gas and
hydrocarbon fluids
EN 1555-1:2021, Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 1: General
EN 1555-2:2021, Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 2: Pipes
EN 1555-5:2021, Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 5: Fitness
for purpose of the system
1 5 2
1 bar = 0,1 MPa. = 10 Pa; 1 MPa = 1 N/mm .
EN 1716, Plastics piping systems - Polyethylene (PE) tapping tees - Test method for impact resistance of an
assembled tapping tee
EN 10226-1, Pipe threads where pressure tight joints are made on the threads - Part 1: Taper external
threads and parallel internal threads - Dimensions, tolerances and designation
EN 10226-2, Pipe threads where pressure tight joints are made on the threads - Part 2: Taper external
threads and taper internal threads - Dimensions, tolerances and designation
EN ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads - Part 1: Dimensions,
tolerances and designation (ISO 228-1)
EN ISO 1133-1, Plastics - Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR)
of thermoplastics - Part 1: Standard method (ISO 1133-1)
EN ISO 1167-1:2006, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids -
Determination of the resistance to internal pressure - Part 1: General method (ISO 1167-1:2006)
EN ISO 1167-4, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids - Determination
of the resistance to internal pressure - Part 4: Preparation of assemblies (ISO 1167-4)
EN ISO 3126, Plastics piping systems - Plastics components - Determination of dimensions (ISO 3126)
EN ISO 11357-6, Plastics - Differential scanning calorimetry (DSC) - Part 6: Determination of oxidation
induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT) (ISO 11357-6)
EN ISO 17778, Plastics piping systems - Fittings, valves and ancillaries - Determination of gaseous flow
rate/pressure drop relationships (ISO 17778)
ISO 13950, Plastics pipes and fittings - Automatic recognition systems for electrofusion joints
ISO 13951, Plastics piping systems - Test method for the resistance of plastic pipe/pipe or pipe/fitting
assemblies to tensile loading
ISO 13953, Polyethylene (PE) pipes and fittings - Determination of the tensile strength and failure mode of
test pieces from a butt-fused joint
ISO 13954, Plastics pipes and fittings - Peel decohesion test for polyethylene (PE) electrofusion assemblies
of nominal outside diameter greater than or equal to 90 mm
ISO 13955, Plastics pipes and fittings - Crushing decohesion test for polyethylene (PE) electrofusion
assemblies
ISO 13956, Plastics pipes and fittings - Decohesion test of polyethylene (PE) saddle fusion joints - Evaluation
of ductility of fusion joint interface by tear test
ISO 17885, Plastics piping systems - Mechanical fittings for pressure piping systems – Specification
ISO 18488, Polyethylene (PE) materials for piping systems - Determination of Strain Hardening Modulus in
relation to slow crack growth - Test method
3 Terms and definitions
For the purposes of this document, the terms and definitions, symbols and abbreviations given in
EN 1555-1:2021 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1
electrofusion socket fitting
polyethylene (PE) fitting which contains one or more integral heating elements, that are capable of
transforming electrical energy into heat to realize a fusion joint with a spigot end or a pipe
3.2
electrofusion saddle fitting
polyethylene (PE) fitting which contains one or more integral heating elements, that are capable of
transforming electrical energy into heat to realise a fusion joint onto a pipe
3.2.1
tapping tee
electrofusion saddle fitting (top loading or wrap round) which contains an integral cutter, to cut through
the wall of the main pipe, which remains in the body of this fitting
3.2.2
branch saddle
electrofusion saddle fitting (top loading or wrap round) which requires an ancillary cutting tool for
drilling a hole in the adjoining main pipe
3.3
mechanical fitting
fitting, that generally includes a compression part to provide pressure integrity, leak tightness and
resistance to end loads, for assembling polyethylene (PE) pipe to another PE pipe or any other element
of the piping system
Note 1 to entry: A pipe-supporting sleeve providing a permanent support for a polyethylene (PE) pipe to prevent
creep in the pipe wall under radial compressive forces, is applicable. The metallic parts of the fitting can be
assembled to metallic pipes by screw-threads, compression joints, welded or flanged connections. In some cases the
supporting sleeve at the same time constitutes a grip ring.
Note 2 to entry: The fitting can allow either a dismountable or permanently assembled joint.
Note 3 to entry: The mechanical fitting can be supplied for field assembly, typically as a material transition fitting,
or pre-assembled by the manufacturer.
3.4
spigot end fitting
polyethylene (PE) fitting where the outside diameter of the spigot end is equal to the nominal outside
diameter, d , of the corresponding pipe
n
4 Symbols and abbreviations
For the purpose of this document the symbols and abbreviations given in EN 1555-1:2021 apply.
5 Material
5.1 Compound for fittings
The PE compound from which the fittings are made shall be in accordance with EN 1555-1:2021.
The stress bearing parts shall only be made from virgin material conforming to EN 1555-1:2021.
Non-stress bearing PE parts shall be made from virgin material or reworked material from a compound
with the same MRS or a mixture of both materials.
5.2 Material for non-polyethylene parts
5.2.1 General
All components shall conform to the relevant EN standard(s). Alternative standards may be applied in
cases where the suitable EN standard(s) do not exist. In all cases, fitness for purpose of the components
shall be demonstrated.
The materials and the constituent elements used in making the fitting (including elastomers and any
metal parts as may be used) shall be as resistant to the external and internal environments as the other
elements of the piping system, and shall have an expected lifetime under the following conditions at least
equal to that of the PE pipes conforming to EN 1555-2:2021 with which they are intended to be used:
a) during storage;
b) under the effect of the gas conveyed therein;
c) with respect to the service environment and operating conditions.
The requirements for the level of material performance of non-polyethylene parts shall be at least as
stringent as that of the PE compound for the piping system. Reworked materials shall not be used for
stress bearing polymeric parts.
Non-stress bearing fitting parts, e.g. clamps for electrofusion saddle fittings, that only maintain a function
during installation, are made from other materials or polyethylene.
Other materials used in fittings in contact with the PE pipe shall not adversely affect pipe performance or
initiate stress cracking.
5.2.2 Metal parts
All metal parts susceptible to corrosion shall be adequately protected, providing this is necessary for the
durability and function of the system.
When dissimilar metallic materials are used which can be in contact with moisture, steps shall be taken
to avoid the possibility of galvanic corrosion.
5.2.3 Sealing materials
Elastomeric seals shall conform to EN 682.
If other sealing materials are used, they need to be proven for gas supply systems.
5.2.4 5 Other materials
Greases or lubricants shall not exude onto fusion areas, and shall not affect the long-term performance of
fitting materials.
6 General characteristics
6.1 Appearance
When viewed without magnification, the internal and external surfaces of fittings shall be clean and shall
have no scoring, cavities and other surface defects to an extent that would prevent conformity to this
document.
No component of the fitting shall show any signs of damage, scratches, pitting, bubbles, blisters,
inclusions or cracks to an extent that would prevent conformity of the fittings to the requirements of this
document.
6.2 Colour
The colour of the PE parts of fittings shall be either black, yellow, or orange.
6.3 Design
The design of the fitting shall be such that, when assembling the fitting onto the pipe or other component,
electrical coils and/or seals are not displaced.
Tapping tees may be provided with upper and lower end stops for the drill, or other means of indicating
the drill position according to manufacturer’s instructions.
Tapping tees may be provided with a means to prevent uncontrolled gas release during tapping.
6.4 Appearance of factory made joints
The internal and external surfaces of the pipe and fitting after fusion jointing, examined visually without
magnification, shall be free from melt exudation outside the confines of the fitting, apart from that which
may be declared acceptable by the fitting manufacturer or used deliberately as a fusion marker.
Any melt exudation shall not cause wire movement in electrofusion fittings such that it leads to short-
circuiting, when jointed in accordance with the manufacturer's instructions. There shall be no excessive
creasing of the internal surfaces of the adjoining pipes.
6.5 Electrical characteristics for electrofusion fittings
The electrical protection that shall be provided by the fusion process depends on the voltage and the
current used and on the characteristics of the electricity power source.
For voltages greater than 25 V, direct human contact with energized parts shall not be possible when the
fitting is in the fusion cycle during assembly in accordance with the instructions of the manufacturers of
the fittings and of the assembly equipment, as applicable.
NOTE 1 The fitting is part of an electrical system during the fusion process as defined in EN 60335-1 [3],
HD 60364-1 [4] and IEC 61140 [5].
The tolerance on the electrical resistance of the fitting at 23 °C shall be stated by the manufacturer. The
resistance shall be between nominal resistance (−10 %) and nominal resistance [(+10 %) + 0,1 Ω].
NOTE 2 0,1 Ω is the assumed value of the contact resistance.
The surface finish of the terminal pins shall allow a minimum contact resistance in order to satisfy the
resistance tolerance requirements.
NOTE 3 See Annex A, for examples of typical electrofusion terminal connections.
7 Geometric characteristics
7.1 Measurement of dimensions
The dimensions of the fitting shall be measured in accordance with EN ISO 3126, and rounded to the next
0,1 mm. In case of dispute, the measurement shall not be made less than 24 h after manufacture, and after
being conditioned for at least 4 h at (23 ± 2) °C.
Additionally, for spigot end fittings provided with temporary supports, perform dimensional
measurement at least 1 h after removal of the supports.
Indirect measurement at the stage of production is allowed at shorter time periods providing evidence is
shown of correlation.
7.2 Dimensions of electrofusion socket fittings
7.2.1 Diameters and lengths of electrofusion sockets
For electrofusion sockets (see Figure 1) having a nominal diameter given in Table 1, the socket diameter
and lengths shall be given by the manufacturer and shall conform to Table 1 with the following
conditions:
a) L ≥ 5 mm;
b) D ≥ d − 2 e .
2 n min
Key
D is the mean inside diameter in the fusion zone measured in a plane parallel to the plane of the mouth at
a distance of L + 0,5L2 from that face;
D
is the bore, which is the minimum diameter of the flow channel through the body of the fitting;
L is the depth of penetration of the pipe or male end of a spigot fitting; in case of a coupling without stop,
it is not greater than half the total length of the fitting;
L is the heated length within a socket as declared by the manufacturer to be the nominal length of the
fusion zone;
L is the distance between the mouth of the fitting and the start of the fusion zone as declared by the
manufacturer to be the nominal unheated entrance length of the fitting.
Figure 1 — Dimensions of electrofusion socket fittings
Table 1 — Dimensions of electrofusion socket fittings
Dimensions in millimetres
Nominal Depth of penetration Fusion
diameter zone
a
d L L
L
n 1,min 2,min
1,max
16 25 41 10
20 25 41 10
25 25 41 10
32 25 44 10
40 25 49 10
50 28 55 10
63 31 63 11
75 35 70 12
90 40 79 13
110 53 82 15
125 58 87 16
140 62 92 18
160 68 98 20
180 74 105 21
200 80 112 23
225 88 120 26
250 95 129 33
280 104 139 35
315 115 150 39
355 127 164 42
400 140 179 47
450 155 195 51
500 170 212 56
560 188 235 61
630 209 255 67
710 220 280 74
800 230 300 82
a
An extended L may be agreed between the end user and manufacturer. In
this case compatibility of such fittings is not given with components with a
tubular length of spigots L according to Table 3.
2,min
The mean inside diameter of the fitting in the middle of the fusion zone (see D in Figure 1) shall not be
less than d .
n
In the case of a fitting having sockets of differing nominal diameters, each one shall conform to the
requirements for the nominal diameter of the corresp
...
EN 1555-3:2021は、可燃性ガス供給用のプラスチック配管システムに関する重要な規格であり、ポリエチレン（PE）製のフィッティングに焦点を当てています。この標準は、PE製のフュージョンフィッティングや機械式フィッティングの特性を明確に定義しており、ガス供給システムにおける適用性を強調しています。 主な強みとして、EN 1555-3:2021は、最大動作圧力（MOP）が10バールまでの条件下での使用に適したフィッティングの仕様を詳細に示しており、特に設計目的における20℃の基準温度での条件を考慮しています。また、-20℃から40℃の範囲の動作温度に対する適用性も確保されており、設置環境に合わせた柔軟な対応が可能です。 さらに、この文書は、異なる種類のフィッティング（例：エレクトロフュージョンソケットフィッティング、エレクトロフュージョンサドルフィッティング、スピゴットエンドフィッティング、機械式フィッティング）を包含し、多様な実装のニーズに応える意図があります。特に、これらのフィッティングは、カップラー、等径・縮径ティー、リデューサー、サドル、エルボ、キャップなどの形状で利用可能であることも重要なポイントです。 加えて、標準に基づく試験方法のテストパラメータが明確に定義されており、製品の信頼性と性能を保証するためのガイドラインを提供しています。この文書はまた、EN 1555の他の部分（1, 2, 4, 5）との相互運用性を考慮しており、包括的な規格としての役割を果たしています。 全体として、EN 1555-3:2021は、ポリエチレンフィッティングを用いた可燃性ガス供給システムの設計と実装において、優れた指針を提供しており、高い安全性と性能基準を遵守するための必須の文書であると言えます。この標準の実施は、業界の規範に従いつつ、顧客の特定の要求や国の規制に基づいた適切なフィッティング選択を可能にします。
The EN 1555-3:2021 standard is a crucial document that outlines the specifications for plastics piping systems specifically designed for the supply of gaseous fuels using polyethylene (PE). It effectively addresses the characteristics of both fusion and mechanical fittings, thereby reinforcing its relevance in the field. One of the key strengths of this standard is its comprehensive scope, which not only details the physical properties of PE fittings but also establishes test parameters essential for ensuring quality and safety in gaseous fuel applications. The document delineates criteria for maximum operating pressure (MOP) of up to 10 bar and operating temperatures ranging from −20 °C to 40 °C. This detailed specification ensures that the materials used in the fittings are thoroughly vetted for real-world applications, enhancing their reliability in varying environmental conditions. Furthermore, the standard addresses multiple types of fittings, including electrofusion socket fittings, electrofusion saddle fittings, spigot end fittings, and mechanical fittings. This variety underlines the versatility of polyethylene as a material for different applications within the gaseous fuel supply systems. By encompassing a range of fitting forms such as couplers, tees, reducers, saddles, elbows, or caps, the standard facilitates greater adaptability in design and implementation, catering to a broad spectrum of installation needs. Additionally, the integration of derating coefficients for higher operating temperatures in EN 1555-5:2021 fortifies the standard’s applicability and establishes guidelines for safety under specific conditions. This reflective measure indicates the standard's dedication to maintaining performance integrity and ensuring compliance with relevant national regulations and installation standards. Overall, the EN 1555-3:2021 standard remains a pivotal reference for industry professionals dealing with PE fittings, ensuring that they have access to a robust framework that prioritizes safety, versatility, and reliability in the supply of gaseous fuels. Its relevance is further underscored by the emphasis on appropriate selection from various aspects, making it a vital tool for specifiers in the field.
EN 1555-3:2021 표준 문서는 가스 연료 공급을 위한 플라스틱 배관 시스템의 중요한 측면을 다룹니다. 이 표준은 폴리에틸렌(PE)으로 제작된 융합 피팅의 특성과 기계적 피팅의 성능을 규정하고 있습니다. EN 1555의 다른 부분들과 함께 적용되며, PE 피팅 및 그 조인트, PE 및 기타 재료로 구성된 조인트에 대한 관리와 기준을 제공합니다. 이 표준의 주요 강점은 다양한 작동 온도와 최대 작동 압력 조건에서의 안전성과 신뢰성을 확보할 수 있다는 점입니다. 특히, 최대 작동 압력(MOP)은 10바까지 가능하며, -20°C에서 40°C 사이의 온도 범위에서 사용될 수 있습니다. 이러한 조건을 통해 PE 퓨전 피팅과 기계적 피팅의 효율성과 내구성을 보장합니다. 또한, EN 1555-3:2021은 전기 융합 소켓 피팅, 전기 융합 안장 피팅, 스피곳 끝 피팅, 기계적 피팅 등의 다양한 종류의 피팅을 적용할 수 있도록 명시하고 있습니다. 이는 사용자가 특정 요구 사항에 따라 적절한 피팅 유형을 선택할 수 있게 하여 설치의 유연성을 제공합니다. 이 문서는 시험 방법에 대한 외부 참조와 시험 매개변수도 규정하고 있어, 규정 준수를 더욱 강화합니다. 구매자나 사양자는 각자의 요구와 관련된 국가 규정 및 설치 관행을 고려하여 적절한 선택을 할 책임이 있습니다. 따라서 이 안내 문서는 PE 피팅의 안전한 적용을 위한 필수적인 지침을 제공합니다. 결론적으로, EN 1555-3:2021 표준은 가스 연료용 폴리에틸렌 피팅의 품질과 안전성을 보장하는 데에 중요한 역할을 하고 있으며, 관련 산업에서의 적용 가능성이 매우 높습니다.
La norme EN 1555-3:2021, intitulée "Systèmes de canalisations en plastique pour l'approvisionnement en combustibles gazeux - Polyéthylène (PE) - Partie 3 : Raccords", offre un cadre solide pour les systèmes de tuyauteries utilisant des raccords en PE destinés à la fourniture de combustibles gazeux. Son champ d'application se limite aux caractéristiques des raccords par fusion en PE et des raccords mécaniques, incluant les paramètres de test pour les méthodes d'essai spécifiées. Cette norme démontre plusieurs forces notables. Tout d'abord, elle établit des critères clairs pour la conception des raccords, incluant des conditions spécifiques d'utilisation telles qu'une pression de service maximale de 10 bars à 20 °C, et une plage de températures de fonctionnement de -20 °C à 40 °C. Cette précision permet aux ingénieurs et aux fabricants de garantir la sécurité et la durabilité des installations. De plus, le document précise les différents types de raccords qui peuvent être utilisés, y compris les raccords à emboîtement par électrofusion, les raccords à saddle, et les raccords mécaniques. Cette diversité d’options est essentielle pour répondre aux exigences variées des projets d'infrastructure liées aux combustibles gazeux. La norme EN 1555-3:2021 est également pertinente car elle s'inscrit dans un cadre normatif plus large, en liaison avec les parties 1, 2, 4 et 5 d’EN 1555. Cela favorise une cohérence dans l'application des exigences à travers l'ensemble des systèmes de canalisations, garantissant que les raccords, ainsi que les joints avec d'autres matériaux, se conforment à des standards de qualité élevés. Enfin, il est important de noter que la responsabilité de l'adéquation des raccords à des contextes spécifiques repose sur l'acheteur ou le spécificateur, ce qui incite à une évaluation minutieuse des besoins et des réglementations nationales pertinentes. En somme, la norme EN 1555-3:2021 se révèle être un document essentiel pour assurer l'intégrité et la performance des systèmes de canalisations en plastique destinés aux combustibles gazeux.
Die Norm EN 1555-3:2021 ist ein entscheidendes Dokument, das die Anforderungen an Schweißfittings aus Polyethylen (PE) sowie mechanische Fittings für Rohrleitungssysteme zur Versorgung mit gasförmigen Brennstoffen präzise beschreibt. Diese Norm deckt die Charakteristika von PE-Fittings und deren Verbindungen ab, wobei die Betonung auf die verschiedenen Arten von Fittings gelegt wird, darunter Elektrofasungssteckfittings, Elektrofasungs-Sattelfittings und mechanische Fittings. Die Dokumentation ist besonders relevant für Fachleute in der Gastechnik und Rohrleitungsinstallation, da sie nicht nur die physikalischen und chemischen Eigenschaften beschreibt, sondern auch die spezifischen Prüfparameter für die relevanten Testmethoden festlegt. Ein großer Vorteil dieser Norm ist ihre umfassende Anwendbarkeit in Verbindung mit den Teilen 1, 2, 4 und 5 von EN 1555. Dies ermöglicht eine einheitliche Kompatibilität und ein besseres Verständnis der Wechselwirkungen zwischen verschiedenen Komponenten von PE-Rohrleitungssystemen. Zudem behandelt sie maximale Betriebsdrücke bis zu 10 bar bei einer Referenztemperatur von 20 °C und legt die Betriebsbedingungen zwischen -20 °C und 40 °C fest. Die Norm gibt den Käufern und Planern wichtige Hinweise, um die geeigneten Fittings basierend auf spezifischen Anforderungen und nationalen Vorschriften auszuwählen. Die Möglichkeit, die Norm für eine Vielzahl von Fittingtypen zu verwenden, stellt sicher, dass Fachleute flexibel auf verschiedene Installationsanforderungen reagieren können. Besonders hervorzuheben ist die Tatsache, dass EN 1555-3:2021 spezifische Anleitungen zur Verwendung von Derating-Koeffizienten für Betriebstemperaturen zwischen 20 °C und 40 °C bietet, was die Planungssicherheit erhöht. Insgesamt bietet die Norm EN 1555-3:2021 eine fundierte Grundlage für die Standardisierung von PE-Fittings in der gasförmigen Brennstoffversorgung. Ihre deutliche Definition der Anforderungen und Testmethoden fördert die Sicherheit und Effizienz innerhalb der Gasinstallationsbranche.
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