prEN 12201-4
(Main)Plastics piping systems for water supply, and for drainage and sewerage under pressure - Polyethylene (PE) - Part 4: Valves for water supply systems
Plastics piping systems for water supply, and for drainage and sewerage under pressure - Polyethylene (PE) - Part 4: Valves for water supply systems
This document specifies the characteristics of valves or valve bodies made from polyethylene (PE) for buried and above ground applications, intended for the conveyance of water for human consumption, raw water prior to treatment, drainage and sewerage under pressure, vacuum sewer systems, and water for other purposes.
It is applicable to isolating unidirectional and bi-directional valves with spigot ends or electrofusion sockets intended to be fused with PE pipes or fittings conforming to prEN 12201 2 and prEN 12201 3 respectively.
Valves made from materials other than PE, designed for the supply of water, drainage and sewerage under pressure conforming to the relevant standards can be used in PE piping systems according to EN 12201, provided that they have PE connections for butt fusion or electrofusion ends, including integrated material transition joints, conforming to prEN 12201 3.
NOTE 1 For valves or valve bodies intended for drainage and sewerage under pressure, additional specifications/tests could be necessary according to the requirements of the purchaser, especially for the chemical resistance of the components in contact with the fluids and functioning characteristics.
NOTE 2 For PE components intended for the conveyance of water for human consumption and raw water prior to treatment attention is drawn to 5.4. Components manufactured for water for other purposes are possibly not suitable for water supply for human consumption.
It also specifies the test parameters for the test methods referred to in this document.
NOTE 3 Valves made from material other than polyethylene (PE) designed for the supply of water intended for human consumption to a relevant standard(s) can be used in PE piping systems conforming to EN 12201 when they have relevant PE connection for butt fusion or electrofusion ends (see prEN 12201 3:2021).
In conjunction with Parts 1, 2, 3 and 5 of EN 12201 it is applicable to PE valves, their joints and to joints with components of PE and other materials intended to be used under the following conditions:
a) allowable operating pressure, PFA, up to 25 bar );
b) an operating temperature of 20 °C as a reference temperature;
c) buried in the ground;
d) sea outfalls;
e) laid in water;
f) above ground, including pipes suspended below bridges.
NOTE 4 For applications operating at constant temperature greater than 20 °C and up to 40 °C, see prEN 12201 1:2021, Annex A.
EN 12201 covers a range of allowable operating pressures and gives requirements concerning colours and additives.
NOTE 5 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 guidance or regulations and installation practices or codes.
This Part of EN 12201 covers valves for pipes with a nominal outside diameter dn ≤ 400 mm.
Kunststoff-Rohrleitungssysteme für die Wasserversorgung und für Entwässerungs- und Abwasserdruckleitungen - Polyethylen (PE) - Teil 4: Armaturen für Wasserversorgungssysteme
Dieses Dokument legt die Eigenschaften für erdverlegte und oberirdisch verlegte Armaturen oder Armaturenkörpern aus Polyethylen (PE) fest, die für den Transport von Trinkwasser, des zur Aufbereitung vorgesehenen Rohwassers, für Entwässerungs- und Abwasserdruckleitungen, Unterdruckent-wässerungssysteme sowie für den Transport von Brauchwasser vorgesehen sind.
Es ist anwendbar auf unidirektionale und bidirektionale Absperrarmaturen mit Schweißenden oder Heizwendel-Schweißmuffen, die mit PE Rohren oder Formstücken nach prEN 12201 2 und prEN 12201 3 verschweißt werden sollen.
Armaturen aus anderen Werkstoffen als PE, die für den Einsatz in der Wasserversorgung, für Entwässerungs- und Abwasserdruckleitungen entsprechend den einschlägigen Normen vorgesehen sind, können in Rohrleitungssystemen aus PE nach EN 12201 eingebaut werden, wenn sie PE Anschlüsse für Stumpf- oder Heizwendelschweißung einschließlich integrierter Werkstoffübergangsformstücke nach prEN 12201 3 aufweisen.
ANMERKUNG 1 Für Armaturen oder Armaturenkörper für Entwässerungs- und Abwasserdruckleitungen könnten entsprechend den Anforderungen des Anwenders zusätzliche Spezifikationen/Prüfungen erforderlich sein, insbesondere hinsichtlich der chemischen Beständigkeit der Rohrleitungsteile in Kontakt mit den Medien sowie der Eigenschaften der Funktionsfähigkeit.
ANMERKUNG 2 In Zusammenhang mit Rohrleitungsteilen aus PE für den Transport von Trinkwasser einschließlich des aufzubereitenden Rohwassers wird auf 5.4 verwiesen. Rohrleitungsteile, die für den Transport von Brauchwasser sowie für Entwässerungs- und Abwasserleitungen gefertigt wurden, sind möglicherweise nicht für die Versorgung mit Trinkwasser geeignet.
Dieses Dokument legt auch die Prüfparameter für die Prüfverfahren fest, auf die in diesem Dokument verwiesen wird.
ANMERKUNG 3 Armaturen aus anderen Werkstoffen als Polyethylen (PE), die für den Einsatz in der Wasserversorgung für den menschlichen Gebrauch vorgesehen sind und die die Anforderungen der entsprechenden Norm(en) erfüllen, können in Rohrleitungssystemen aus PE nach EN 12201 eingebaut werden, wenn die Verschweißbarkeit mit den entsprechenden Anschlüssen aus PE mittels Stumpf- oder Heizwendelschweißung (siehe prEN 12201 3:2021) sichergestellt ist.
In Verbindung mit Teil 1, Teil 2, Teil 3 und Teil 5 von EN 12201 gilt es für Armaturen aus PE, deren Verbindungen untereinander, mit anderen Rohrleitungsteilen aus PE sowie mit Rohrleitungsteilen aus anderen Werkstoffen, die zur Verwendung unter den folgenden Bedingungen vorgesehen sind:
a) maximal zulässiger Bauteilbetriebsdruck PFA bis 25 bar ;
b) eine Betriebstemperatur von 20 °C als Bezugstemperatur;
c) erdverlegt;
d) Entwässerung ins Meer (Siele);
e) in Gewässern verlegt;
f) oberirdisch verlegt, einschließlich Düker und Brückenleitungen.
ANMERKUNG 4 Für Anwendungsgebiete, in denen konstante Betriebstemperaturen über 20 °C bis 40 °C auftreten, siehe prEN 12201 1:2021, Anhang A.
Die Normenreihe EN 12201 deckt einen Bereich von maximal zulässigen Bauteilbetriebsdrücken ab und enthält Anforderungen bezüglich Farben und Zusatzstoffen.
ANMERKUNG 5 Es liegt in der Verantwortung des Auftraggebers oder Planers, aus diesen Gesichtspunkten die geeignete Auswahl zu treffen, unter Berücksichtigung ihrer speziellen Anforderungen und jeglicher maßgebenden nationalen Empfehlungen oder Festlegungen und Verfahrensweisen oder Vorschriften für die Verlegung.
Dieser Teil von EN 12201 gilt für Armaturen für Rohre mit einem Nenn-Außendurchmesser von dn ≤ 400 mm.
Systèmes de canalisations en plastique pour l'alimentation en eau et pour les branchements et les collecteurs d'assainissement avec pression - Polyéthylène (PE) - Partie 4: Robinets pour les systèmes d'alimentation en eau
Le présent document spécifie les caractéristiques des robinets ou des corps de robinets en polyéthylène (PE) pour des applications enterrées et non enterrées, prévus pour le transport d’eau destinée à la consommation humaine, y compris l’eau brute avant traitement, les branchements et les collecteurs d’assainissement avec pression, les réseaux d’évacuation des eaux usées sous vide et l’eau destinée à d’autres usages.
Il s’applique aux robinets d’isolement unidirectionnels et aux robinets d’isolement bidirectionnels avec des extrémités à bouts mâles ou des emboîtures électrosoudables prévues pour être soudées à des tubes ou à des raccords en PE conformes au prEN 12201 2 et au prEN 12201 3, respectivement.
Les robinets fabriqués à partir d’autres matières que le PE, conçus pour la distribution d’eau, les branchements et les collecteurs d’assainissement avec pression conformes aux normes applicables, peuvent être utilisés dans les systèmes de canalisations en PE conformément à l’EN 12201, à condition qu’ils aient des raccordements en PE pour soudage bout à bout ou des extrémités électrosoudables ainsi que des assemblages de transition intégrés conformes au prEN 12201 3.
NOTE 1 Pour les robinets ou corps de robinets prévus pour les branchements et les collecteurs d’assainissement avec pression, des spécifications/essais supplémentaires peuvent être nécessaires conformément aux exigences de l’acheteur, en particulier pour la résistance chimique des composants en contact avec les fluides et les caractéristiques de fonctionnement.
NOTE 2 Pour les composants en PE prévus pour le transport d’eau destinée à la consommation humaine et d’eau brute avant traitement, l’attention est attirée sur le paragraphe 5.4. Les composants fabriqués pour l’eau destinée à d’autres usages peuvent s’avérer inaptes pour l’alimentation en eau destinée à la consommation humaine.
Il spécifie également les paramètres d’essai pour les méthodes d’essai référencées dans le présent document.
NOTE 3 Les robinets fabriqués à partir d’autres matières que le polyéthylène (PE) prévus pour l’alimentation d’eau destinée à la consommation humaine, conformes à une ou plusieurs normes correspondantes, peuvent être utilisés dans les systèmes de canalisations en PE conformes à l’EN 12201 à condition qu’ils aient des extrémités en PE adaptées à l’assemblage par soudage bout à bout ou par électrosoudage (voir le prEN 12201 3:2021).
Conjointement avec les Parties 1, 2, 3 et 5 de l’EN 12201, il s’applique aux robinets 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 de service admissible, PFA, jusqu’à 25 bar ) ;
b) une température de service de 20 °C comme température de référence ;
c) enterrés dans le sol ;
d) comme émissaires de rejet en mer ;
e) posés dans l’eau ;
f) non enterrés, y compris canalisations suspendues sous des ponts.
NOTE 4 Pour les applications à température de service constante supérieure à 20 °C et jusqu’à 40 °C, voir le prEN 12201 1:2021, Annexe A.
L’EN 12201 couvre une gamme de pressions de service admissibles et donne les exigences concernant les couleurs et les additifs.
NOTE 5 Il est de la responsabilité de l’acheteur ou du concepteur du réseau d’effectuer les choix appropriés à partir de ces données, en tenant compte des exigences particulières et de toute ligne directrice ou toute réglementation nationale applicable, ainsi que des pratiques ou codes de pose.
La présente partie de l’EN 12201 traite des robinets pour les tubes ayant un diamètre extérieur nominal dn ≤ 400 mm.
Cevni sistemi iz polimernih materialov za oskrbo z vodo ter za odvodnjavanje in kanalizacijo pod tlakom - Polietilen (PE) - 4. del: Ventili za oskrbo z vodo
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 12201-4:2021
01-julij-2021
Cevni sistemi iz polimernih materialov za oskrbo z vodo ter za odvodnjavanje in
kanalizacijo pod tlakom - Polietilen (PE) - 4. del: Ventili za oskrbo z vodo
Plastics piping systems for water supply, and for drainage and sewerage under pressure
- Polyethylene (PE) - Part 4: Valves for water supply systemsKunststoff-Rohrleitungssysteme für die Wasserversorgung und für Entwässerungs- und
Abwasserdruckleitungen - Polyethylen (PE) - Teil 4: Armaturen fürWasserversorgungssysteme
Systèmes de canalisations en plastique pour l'alimentation en eau et pour les
branchements et les collecteurs d'assainissement avec pression - Polyéthylène (PE) -
Partie 4: Robinets pour les systèmes d'alimentation en eauTa slovenski standard je istoveten z: prEN 12201-4
ICS:
23.060.01 Ventili na splošno Valves in general
91.140.60 Sistemi za oskrbo z vodo Water supply systems
93.030 Zunanji sistemi za odpadno External sewage systems
vodo
oSIST prEN 12201-4:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 12201-4:2021
DRAFT
EUROPEAN STANDARD
prEN 12201-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2021
ICS 23.060.01; 23.040.20 Will supersede EN 12201-4:2012
English Version
Plastics piping systems for water supply, and for drainage
and sewerage under pressure - Polyethylene (PE) - Part 4:
Valves for water supply systems
Systèmes de canalisations en plastique pour Kunststoff-Rohrleitungssysteme für die
l'alimentation en eau et pour les branchements et les Wasserversorgung und für Entwässerungs- und
collecteurs d'assainissement avec pression - Abwasserdruckleitungen - Polyethylen (PE) - Teil 4:
Polyéthylène (PE) - Partie 4: Robinets pour les Armaturen für Wasserversorgungssysteme
systèmes d'alimentation en eauThis draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 155.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, Turkey 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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12201-4:2021 E
worldwide for CEN national Members.---------------------- Page: 3 ----------------------
oSIST prEN 12201-4:2021
prEN 12201-4:2021 (E)
Contents Page
European foreword ............................................................................................................................................ 4
Introduction .......................................................................................................................................................... 5
1 Scope .......................................................................................................................................................... 6
2 Normative references .......................................................................................................................... 7
3 Terms, definitions, symbols and abbreviations ........................................................................ 8
3.1 General...................................................................................................................................................... 8
3.2 Terms relating to design .................................................................................................................... 8
4 Material .................................................................................................................................................... 9
4.1 Compound for the valve body ........................................................................................................... 9
4.2 Material for non-polyethylene parts.............................................................................................. 9
4.2.1 General...................................................................................................................................................... 9
4.2.2 Metal parts............................................................................................................................................. 10
4.2.3 Sealing materials ................................................................................................................................. 10
4.2.4 Greases and lubricants ..................................................................................................................... 10
4.2.5 Assembly ................................................................................................................................................ 10
5 General characteristics ..................................................................................................................... 10
5.1 Appearance of the valve ................................................................................................................... 10
5.2 Colour ...................................................................................................................................................... 10
5.3 Design ...................................................................................................................................................... 10
5.3.1 General.................................................................................................................................................... 10
5.3.2 Valve body ............................................................................................................................................. 10
5.3.3 Valve ends .............................................................................................................................................. 10
5.3.4 Operating device ................................................................................................................................. 11
5.3.5 Seals ......................................................................................................................................................... 11
5.4 Effect on water quality ...................................................................................................................... 11
6 Geometric characteristics ................................................................................................................ 11
6.1 General.................................................................................................................................................... 11
6.2 Measurement of dimensions .......................................................................................................... 11
6.3 Dimensions of spigot ends for valves .......................................................................................... 11
6.4 Dimensions of valves with electrofusion sockets ................................................................... 11
6.5 Dimensions of the operating device ............................................................................................. 11
7 Mechanical characteristics for assembled valves ................................................................... 12
7.1 General.................................................................................................................................................... 12
7.2 Requirements ....................................................................................................................................... 12
7.2.1 General.................................................................................................................................................... 12
8 Physical characteristics .................................................................................................................... 17
8.1 Conditioning ......................................................................................................................................... 17
8.2 Requirements ....................................................................................................................................... 17
9 Performance requirements ............................................................................................................. 18
10 Technical file ........................................................................................................................................ 18
11 Marking .................................................................................................................................................. 19
11.1 General.................................................................................................................................................... 19
11.2 Minimum required marking of valves ......................................................................................... 19
11.3 Additional Marking ............................................................................................................................ 20
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12 Delivery Conditions ........................................................................................................................... 20
Annex A (normative) Determination of the leaktightness of seat(s) and packing ................... 21
Annex B (normative) Test method for leaktightness and ease of operation after tensile
loading .................................................................................................................................................... 24
Bibliography ....................................................................................................................................................... 26
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prEN 12201-4:2021 (E)
European foreword
This document (prEN 12201-4:2021) has been prepared by Technical Committee CEN/TC 155 “Plastics
piping systems and ducting systems”, the secretariat of which is held by NEN.This document will supersede EN 12201-4:2012.
In comparison with the previous edition, the following technical modifications have been made:
— The revision of this System Standard has been carried out principally to add the PE 100-RC type
materials with enhanced resistance to slow crack growth. prEN 12201-1:2021, Annex A discusses
the performance of this type of material and gives additional information for non-conventional
installation techniques. The diameter range for valves has been increased to 400 mm. An improved
description of the leaktightness test is given. Annex B has been added to describe the leaktightness
test after the tensile test, following withdrawal of ISO 10933. In addition test methods have been
updated and a new method has been added for PE 100-RC materials.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 12201 consists of the following parts:
— EN 12201-1, Plastics piping systems for water supply, and for drainage and sewerage under pressure
— Polyethylene (PE) — Part 1: General;— EN 12201-2, Plastics piping systems for water supply, and for drainage and sewerage under pressure
— Polyethylene (PE) — Part 2: Pipes;— EN 12201-3, Plastics piping systems for water supply, and for drainage and sewerage under pressure
— Polyethylene (PE) — Part 3: Fittings (this document);— EN 12201-4, Plastics piping systems for water supply, and for drainage and sewerage under pressure
— Polyethylene (PE) — Part 4: Valves for water supply systems;— EN 12201-5, Plastics piping systems for water supply, and for drainage and sewerage under pressure
— Polyethylene (PE) — Part 5: Fitness for purpose of the system;In addition the following document provides guidance on the assessment of conformity:
— CEN/TS 12201-7, Plastics piping systems for water supply — Polyethylene (PE) — Part 7: Guidance for
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prEN 12201-4:2021 (E)
Introduction
This document, known as the System Standard, specifies the requirements for a piping system and its
components when made from polyethylene (PE). The piping system is intended to be used for water
supply intended for human consumption, including the conveyance of raw water prior to treatment,
drainage and sewerage under pressure, vacuum sewer systems, and water for other purposes.
In respect of potential adverse effects on the quality of water intended for human consumption, caused
by the product covered by the EN 12201 series:a) this document provides no information as to whether the products may be used without restriction
in any of the Member States of the EU or EFTA;b) products intended for use in water supply systems should comply, when existing, with national
regulations and testing arrangements that ensure fitness for contact with drinking water.
Requirements and test methods for material and components, other than valves, are specified in
prEN 12201-1:2021, prEN 12201-2:2021 and prEN 12201-3:2021.Characteristics for fitness of purpose are covered in prEN 12201-5. CEN/TS 12201-7 [1] gives guidance
for the assessment of conformity.This Part of EN 12201 covers the characteristics of valves.
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prEN 12201-4:2021 (E)
1 Scope
This document specifies the characteristics of valves or valve bodies made from polyethylene (PE) for
buried and above ground applications, intended for the conveyance of water for human consumption,
raw water prior to treatment, drainage and sewerage under pressure, vacuum sewer systems, and water
for other purposes.It is applicable to isolating unidirectional and bi-directional valves with spigot ends or electrofusion
sockets intended to be fused with PE pipes or fittings conforming to prEN 12201-2 and prEN 12201-3
respectively.Valves made from materials other than PE, designed for the supply of water, drainage and sewerage
under pressure conforming to the relevant standards can be used in PE piping systems according to
EN 12201, provided that they have PE connections for butt fusion or electrofusion ends, including
integrated material transition joints, conforming to prEN 12201-3.NOTE 1 For valves or valve bodies intended for drainage and sewerage under pressure, additional
specifications/tests could be necessary according to the requirements of the purchaser, especially for the chemical
resistance of the components in contact with the fluids and functioning characteristics.
NOTE 2 For PE components intended for the conveyance of water for human consumption and raw water prior
to treatment attention is drawn to 5.4. Components manufactured for water for other purposes are possibly not
suitable for water supply for human consumption.It also specifies the test parameters for the test methods referred to in this document.
NOTE 3 Valves made from material other than polyethylene (PE) designed for the supply of water intended for
human consumption to a relevant standard(s) can be used in PE piping systems conforming to EN 12201 when they
have relevant PE connection for butt fusion or electrofusion ends (see prEN 12201-3:2021).
In conjunction with Parts 1, 2, 3 and 5 of EN 12201 it is applicable to PE valves, their joints and to joints
with components of PE and other materials intended to be used under the following conditions:
a) allowable operating pressure, PFA, up to 25 bar ;b) an operating temperature of 20 °C as a reference temperature;
c) buried in the ground;
d) sea outfalls;
e) laid in water;
f) above ground, including pipes suspended below bridges.
NOTE 4 For applications operating at constant temperature greater than 20 °C and up to 40 °C, see
prEN 12201-1:2021, Annex A.EN 12201 covers a range of allowable operating pressures and gives requirements concerning colours
and additives.NOTE 5 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 guidance or regulations and
installation practices or codes.This Part of EN 12201 covers valves for pipes with a nominal outside diameter d ≤ 400 mm.
1) 5 21 bar = 0,1 MPa = 10 Pa; 1 MPa = 1 N/mm .
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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 681-1, Elastomeric seals - Materials requirements for pipe joint seals used in water and drainage
applications - Part 1: Vulcanized rubberEN 736-1:2018, Valves - Terminology - Part 1: Definition of types of valves
EN 736-2:2016, Valves - Terminology - Part 2: Definition of components of valves
EN 1680, Plastics piping systems - Valves for polyethylene (PE) piping systems - Test method for
leaktightness under and after bending applied to the operating mechanismsEN 1705, Plastics piping systems - Thermoplastics valves - Test method for the integrity of a valve after an
external blowEN 12100, Plastics piping systems - Polyethylene (PE) valves - Test method for resistance to bending
between supportsprEN 12201-1:2021, Plastics piping systems for water supply, and for drainage and sewerage under
pressure - Polyethylene (PE) - Part 1: GeneralprEN 12201-2:2021, Plastics piping systems for water supply, and for drainage and sewerage under
pressure - Polyethylene (PE) - Part 2: PipesprEN 12201-3:2021, Plastics piping systems for water supply, and for drainage and sewerage under
pressure - Polyethylene (PE) - Part 3: FittingsprEN 12201-5:2021, Plastics piping systems for water supply, and for drainage and sewerage under
pressure — Polyethylene (PE) — Part 5: Fitness for purpose of the systemEN 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 3126:2005)
EN ISO 3127:2017, Thermoplastics pipes - Determination of resistance to external blows - Round-the-clock
method (ISO 3127:1994)prEN ISO 8233, Thermoplastic valves — Torque — Test method (ISO 8233)
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)
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3 Terms, definitions, symbols and abbreviations
For the purposes of this document, the terms, definitions, symbols and abbreviations given in
prEN 12201-1, EN 736-1:2018, EN 736-2:2016 and the following apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp— IEC Electropedia: available at http://www.electropedia.org/
3.1 General
3.1.1
external leaktightness
leaktightness of the body enveloping the space containing the water, with respect to the atmosphere
3.1.2internal leaktightness
leaktightness between the inlet and the outlet of the valve, with the valve in the closed position
3.1.3leakage
seepage of water from the valve body, or any component of the valve
3.1.4
valve body
main part of a valve which consists of an operating stop system and contains the obturator, seat(s),
stem(s) or shaft(s) and packing seals and provides the terminal ends for connection to the PE
pipe/fittings as applicable3.1.5
operating device
part of a valve for connection with the operating key which allows the opening and closing of the valve
3.2 Terms relating to design3.2.1
isolating valve
valve intended for use only in the closed or fully open position
[SOURCE: EN 736-1:2018]
3.2.2
full bore valve
valve with a flow section equal to or greater than 80 % of the section corresponding to the nominal inside
diameter of the body end port[SOURCE: EN 736-3:2008]
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3.2.3
clearway valve
valve designed to have an unobstructed flow way, which allows for the passage of a theoretical sphere
with a diameter that is not less than the nominal inside diameter of the body end port
[SOURCE: EN 736-3:2008]3.2.4
reduced bore valve
valve with a flow section equal to or greater than 36 % of the section corresponding to the nominal inside
diameter of the body end port and which does not correspond to the full bore valve
[SOURCE: EN 736-3:2008]4 Material
4.1 Compound for the valve body
The PE compound from which the body of the valve, with spigot end or electrofusion socket is made shall
conform to prEN 12201-1:2021.The PE components of the valve shall only be made from virgin material conforming to
prEN 12201-1:2021.4.2 Material for non-polyethylene parts
4.2.1 General
All components shall conform to the relevant European Standard(s). Alternative standards may be
applied in cases where suitable European Standard(s) do not exist, fitness for purpose of the components
shall be demonstrated.The materials and the constituent elements used in making the valves (including elastomers, greases 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 prEN 12201-2:2021, with which they are intended to
be used:a) during storage;
b) under the effect of the water conveyed therein;
c) with respect to the service environment and operating conditions.
The requirements for the level of material performance for 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.Other materials used in valves in contact with the PE pipe shall not adversely affect the pipe performance
or initiate stress cracking.The valve manufacturer shall ensure that any transition joint between polyethylene and non-
polyethylene parts and the valve body shall fulfil the requirements of prEN 12201-3:2021.
Metal valve bodies for PE piping systems up to 25 bars should conform to the relevant standard of
CEN/TC 69 “Industrial valves”.---------------------- Page: 11 ----------------------
oSIST prEN 12201-4:2021
prEN 12201-4:2021 (E)
4.2.2 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 may be in contact with moisture, steps shall be taken
to avoid the possibility of galvanic corrosion.4.2.3 Sealing materials
Elastomeric seals shall conform to EN 681-1.
If other sealing materials are used they need to be proven for water supply and sewerage systems.
4.2.4 Greases and lubricantsGreases or lubricants shall not exude on to fusion areas and shall not affect the long-term performance of
the PE valve or valve body, nor have any adverse effect on the quality of the water.
4.2.5 AssemblyAncillary components of valves shall be assembled according to manufacturer’s procedures and any
component used in the assembly shall not prevent conformity of the valve to this document.
5 General characteristics5.1 Appearance of the valve
When viewed without magnification, the internal and external surfaces of valves shall be smooth, clean
and free from scoring, cavities and other surface defects to an extent that would prevent conformity to
this document.No component of the valve shall show any signs of damage, scratches, pitting, bubbles, blisters, inclusions
or cracks to an extent that would prevent conformity of the valve to this document.
5.2 ColourThe PE body shall be black or blue.
Blue valve bodies are not permitted for applications other than the conveyance of water for human
consumption.For above ground installations, all blue components should be protected from direct UV light.
5.3 Design5.3.1 General
The valve shall be designed to provide the fluid flow passageway and the body ends.
The pressure resistance of the valve shall be defined by the manufacturer according to the design SDR
and material classification.5.3.2 Valve body
The valve body of the valve shall be such that it cannot be dismantled.
An operating stop system shall be provided at the fully open and closed positions.
5.3.3 Valve endsPE spigot ends or electrofusion sockets shall comply with the requirements of prEN 12201-3:2021.
---------------------- Page: 12 ----------------------oSIST prEN 12201-4:2021
prEN 12201-4:2021 (E)
5.3.4 Operating device
The operating device shall be integral with or connected to the stem in such a way that disconnection is
impossible without special equipment.The valve shall close by turning the operating device clockwise. For a quarter-turn valve, the position of
the obturator shall be clearly indicated on the top side of the operating device.
It is recommended that the position of the obturator is marked on the access point for a quarter turn
valve.Most valves close by operating the device clockwise, but in some countries this may be anti-clockwise at
the request of the end user.Stops shall be provided at the fully open and closed positions.
5.3.5 Seals
The seals shall be so mounted as to be resistant to normally occurring mechanical loads. Creep and cold
flow effects shall be taken into account. Any mechanism that puts a loading on the seals shall be
permanently locked. The pressure in the pipeline shall not be used as the sole means of seal activation.
5.4 Effect on water qualityFor valves intended for the conveyance of water for human consumption, attention is drawn to the
requirements of national regulations (see introduction).6 Geometric characteristics
6.1 General
Each valve shall be characterized by its dimensions and associated end connections.
In order to prevent stress concentrations, it is recommended that any changes in the wall thickness of the
valve body is gradual.6.2 Measurement of dimensions
The dimensions 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.Indirect measurement at the stage of production is allowed at shorter time periods providing evidence is
shown of correlation.6.3 Dimensions of spigot ends for valves
The dimensions of spigots shall conform to prEN 12201-3:2021, Table 3, up to and including d 400 mm.
6.4 Dimensions of valves with electrofusion socketsThe dimensions of electrof
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