SIST EN ISO 16486-4:2022
(Main)Plastics piping systems for the supply of gaseous fuels - Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing - Part 4: Valves (ISO 16486-4:2022)
Plastics piping systems for the supply of gaseous fuels - Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing - Part 4: Valves (ISO 16486-4:2022)
This part of ISO 16486 specifies the characteristics of valves made from unplasticized polyamide (PA-U) in accordance with ISO 16486 1, intended to be buried and used for the supply of gaseous fuels.
Valves made from other material than unplasticized polyamide designed for the supply of gaseous fuels conforming to the relevant standards are permitted to be used in PA-U piping system according to ISO 16486 provided they have relevant PA-U connections for butt fusion or electrofusion ends (see ISO 164863). The component, i.e. the complete valve, shall fulfil the requirements of this part of ISO 16486.
It also specifies the test parameters for the test methods referred to in this part of ISO 16486.
It is applicable to bi-directional valves with spigot end or electrofusion socket intended to be jointed with PA-U pipes conforming to ISO 16486 2 without any fittings or with PA-U fittings conforming to ISO 164863.
This part of ISO 16486 covers valves for pipes with a nominal outside diameter, dn, ≤250 mm.
Kunststoff-Rohrleitungssysteme für die Gasversorgung - Rohrleitungssysteme aus weichmacherfreiem Polyamid (PA-U) mit Schweißverbindungen und mechanischen Verbindungen - Teil 4: Armaturen (ISO 16486-4:2022)
Dieser Teil der ISO 16486 legt die Eigenschaften von Armaturen fest, die nach ISO 16486-1 aus weichmacherfreiem Polyamid (PA-U) hergestellt sind und unterirdisch verlegt und für die Gasversorgung verwendet werden sollen.
Er gilt für Absperrarmaturen mit einer und mit zwei Durchflussrichtungen, die über Spitzenden oder Heizwendel-Schweißmuffen verfügen, und dafür vorgesehen sind, mit Rohren oder Formstücken aus PE nach EN ISO 16486-2 bzw. EN ISO 16486-3 verschweißt zu werden.
Armaturen aus einem anderen Werkstoff als weichmacherfreiem Polyamid für die Gasversorgung, die den jeweiligen Normen entsprechen, dürfen nach ISO 16486 in PA-U-Rohrleitungssystemen verwendet werden, wenn sie über jeweilige PA-U-Anschlüsse für Stumpfschweiß- oder Heizwendel-Schweißenden verfügen (siehe ISO 16486-3). Das Bauteil, d. h. die komplette Armatur, muss die Anforderungen dieses Teils der ISO 16486 erfüllen.
Er legt ebenso die Prüfparameter für die in dieser Norm genannten Prüfverfahren fest.
In Verbindung mit Teil 1, Teil 2, Teil 3 und Teil 5 der ISO 16486 gilt er für Armaturen aus PA-U PE, deren Verbindungen untereinander sowie mit Rohrleitungsteilen aus PA-U PE und anderen Werkstoffen, die für die Verwendung unter den folgenden Bedingungen vorgesehen sind:
a) ein maximal zulässiger Betriebsdruck (en: maximum operating pressure, MOP) bis einschließlich 18 bar1 oder als regionale CEN-Anforderung begrenzt auf 16 bar, bei einer Bezugstemperatur von 20 °C für Auslegungszwecke;
ANMERKUNG 1 Für die Anwendung dieses Dokuments und der Verweisungen auf ISO/DIS 8233 wird MOP als Nenndruck angesehen.
b) es gilt eine Betriebstemperatur von −20 °C bis 40 °C.
ANMERKUNG 2 Für Betriebstemperaturen von 20 °C bis 40 °C sind die Abminderungskoeffizienten in ISO DIS 16486-5 definiert.
ISO 16486 (alle Teile) deckt einen Bereich von maximal zulässigen Betriebsdrücken ab und legt Anforderungen bezüglich Farben fest.
ANMERKUNG 3 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.
Er gilt für bidirektionale Armaturen mit einem Spitzende oder einer Heizwendel-Schweißmuffe zum Verbinden mit PA-U-Rohren nach ISO 16486-2 ohne Formstücke oder mit PA-U-Formstücken die der ISO 16486-3 entsprechen.
Dieser Teil der ISO 16486 behandelt Armaturen für Rohre mit einem Nenn-Außendurch-messer dn ≤ 400 mm.
Systèmes de canalisations en matières plastiques pour la distribution de combustibles gazeux - Systèmes de canalisations en polyamide non plastifié (PA-U) avec assemblages par soudage et assemblages mécaniques - Partie 4: Robinets (ISO 16486-4:2022)
Le présent document spécifie les caractéristiques des robinets en polyamide non plastifié (PA-U) conformément à l’ISO 16486-1, destinés à être enterrés et utilisés pour la distribution de combustibles gazeux.
Il s’applique aux robinets d’isolement unidirectionnels et bidirectionnels avec des extrémités à bout mâle ou des emboîtures électrosoudables prévues pour être soudées à des tubes ou à des raccords en PA-U conformes à l’EN ISO 16486-2 et à l’EN ISO 16486-3 respectivement.
Il est autorisé d’utiliser des robinets constitués d’un autre matériau que le polyamide non plastifié, conçus pour la distribution de combustibles gazeux et conformes aux normes pertinentes pour le système de canalisations en PA-U selon la série ISO 16486, à condition qu’ils aient des raccords en PA-U appropriés pour les extrémités soudées bout à bout ou électrosoudables (voir l’ISO 16486-3). Le composant, c’est-à-dire le robinet complet, doit satisfaire aux exigences du présent document.
Le présent document spécifie également les paramètres d’essai pour les méthodes d’essai qu’il décrit.
Conjointement avec ISO 16486-1, l’ISO 16486-2, l’ISO 16486-3 et l’ISO 16486-5, le présent document s’applique aux robinets en PA-U et à leurs assemblages, ainsi qu’aux assemblages avec des composants en PA-U et en d’autres matières destinés à être utilisés dans les conditions suivantes:
a) une pression maximale de service (MOP), inférieure ou égale à 18 bar,[1] , ou limitée à 16 bar en tant qu’exigence régionale du CEN, à une température de référence de 20 °C pour les besoins des calculs;
NOTE 1 Pour les besoins du présent document et en référence à ISO 8233 la MOP est considérée comme la pression nominale.
b) une température de service de –20 °C et 40 °C;
NOTE 2 Pour des températures de service comprises entre 20 °C et 40 °C, les facteurs de réduction sont spécifiés dans l’ISO 16486-5.
Le présent document couvre les robinets conçus pour être raccordés à des tubes d’un diamètre extérieur nominal dn ≤ 400 mm.
[1] 1 bar = 0,1 MPa = 105 Pa ; 1 MPa = 1 N/mm2.
Cevni sistemi iz polimernih materialov za oskrbo s plinastimi gorivi - Cevni sistemi iz nemehčanega poliamida (PA-U) z zvari in mehanskimi spoji - 4. del: Ventili (ISO 16486-4:2022)
Ta del standarda ISO 16486 določa značilnosti ventilov iz nemehčanega poliamida (PA-U) v skladu s standardom ISO 16486-1, ki so predvideni za vkop in uporabo za namene oskrbe s plinastimi gorivi.
Ventile iz drugih materialov, zasnovane za oskrbo s plinastimi gorivi v skladu z ustreznimi standardi, je dovoljeno uporabljati v cevnem sistemu iz nemehčanega poliamida v skladu s standardom ISO 16486 pod pogojem, da imajo ustrezne priključke iz nemehčanega poliamida za soležno taljene ali elektrofuzijske zaključke (glej standard ISO 16486-3). Sestavni del (tj. celoten ventil) mora izpolnjevati zahteve tega dela standarda ISO 16486.
Določa tudi preskusne parametre za preskusne metode iz tega dela standarda ISO 16486.
Uporablja se za dvosmerne ventile s spojnim zaključkom ali elektrofuzijskim spojem, ki so namenjeni za spajanje s cevmi iz nemehčanega poliamida v skladu s standardom ISO 16486-2 brez fitingov ali s fitingi iz nemehčanega poliamida v skladu s standardom ISO 16486-3.
Ta del standarda ISO 16486 zajema ventile za cevi z nominalnim zunanjim premerom dn ≤ 250 mm.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 16486-4:2022
01-maj-2022
Cevni sistemi iz polimernih materialov za oskrbo s plinastimi gorivi - Cevni sistemi
iz nemehčanega poliamida (PA-U) z zvari in mehanskimi spoji - 4. del: Ventili (ISO
16486-4:2022)
Plastics piping systems for the supply of gaseous fuels - Unplasticized polyamide (PA-U)
piping systems with fusion jointing and mechanical jointing - Part 4: Valves (ISO 16486-
4:2022)
Kunststoff-Rohrleitungssysteme für die Gasversorgung - Rohrleitungssysteme aus
weichmacherfreiem Polyamid (PA-U) mit Schweißverbindungen und mechanischen
Verbindungen - Teil 4: Armaturen (ISO 16486-4:2022)
Systèmes de canalisations en matières plastiques pour la distribution de combustibles
gazeux - Systèmes de canalisations en polyamide non plastifié (PA-U) avec
assemblages par soudage et assemblages mécaniques - Partie 4: Robinets (ISO 16486-
4:2022)
Ta slovenski standard je istoveten z: EN ISO 16486-4:2022
ICS:
75.200 Oprema za skladiščenje Petroleum products and
nafte, naftnih proizvodov in natural gas handling
zemeljskega plina equipment
83.140.30 Polimerne cevi in fitingi za Plastics pipes and fittings for
snovi, ki niso tekočine non fluid use
SIST EN ISO 16486-4:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 16486-4:2022
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SIST EN ISO 16486-4:2022
EN ISO 16486-4
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2022
EUROPÄISCHE NORM
ICS 75.200; 83.140.30
English Version
Plastics piping systems for the supply of gaseous fuels -
Unplasticized polyamide (PA-U) piping systems with
fusion jointing and mechanical jointing - Part 4: Valves
(ISO 16486-4:2022)
Systèmes de canalisations en matières plastiques pour Kunststoff-Rohrleitungssysteme für die Gasversorgung
la distribution de combustibles gazeux - Systèmes de - Rohrleitungssysteme aus weichmacherfreiem
canalisations en polyamide non plastifié (PA-U) avec Polyamid (PA-U) mit Schweißverbindungen und
assemblages par soudage et assemblages mécaniques - mechanischen Verbindungen - Teil 4: Armaturen (ISO
Partie 4: Robinets (ISO 16486-4:2022) 16486-4:2022)
This European Standard was approved by CEN on 15 January 2022.
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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16486-4:2022 E
worldwide for CEN national Members.
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SIST EN ISO 16486-4:2022
EN ISO 16486-4:2022 (E)
Contents Page
European foreword . 3
Annex (informative) A-deviation . 4
2
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SIST EN ISO 16486-4:2022
EN ISO 16486-4:2022 (E)
European foreword
This document (EN ISO 16486-4:2022) has been prepared by Technical Committee ISO/TC 138
"Plastics pipes, fittings and valves for the transport of fluids" in collaboration with 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 July 2022, and conflicting national standards shall be
withdrawn at the latest by July 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.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations 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.
Endorsement notice
The text of ISO 16486-4:2022 has been approved by CEN as EN ISO 16486-4:2022 without any
modification.
3
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SIST EN ISO 16486-4:2022
EN ISO 16486-4:2022 (E)
Annex
(informative)
A-deviation
A-deviation: National deviation due to regulations, the alteration of which is for the time being outside the competence of the CEN-CENELEC
national member.
This European Standard does not fall under any Directive of the EU.
In the relevant CEN-CENELEC countries these A-deviations are valid instead of the provisions of the European Standard until they have been
removed.
Country Clause Deviation
ITALY §1 According to Italian legislation concerning the safety of gas installation
Scope
- DM 16 April 2008 (DSO) prescribes that piping and components used in distribution system shall be in accordance with
national standard UNI 9034 (pipes with MOP below 5 bar). In case of MOP greater than 5 bar DM 17 April 2008 shall be
followed.
th
(Official Journal Italian Republic GU n. 107 of 8 May 2008
https://www.gazzettaufficiale.it/eli/id/2008/05/08/08A02871/sg)
- DM 17 April 2008 (TSO) prescribes that piping and components used in transmission system shall be made of steel (art.
3.1 of Technical Annex A to Decree).
th
(Official Journal Italian Republic GU n. 107 of 8 May 2008
https://www.gazzettaufficiale.it/atto/serie_generale/caricaDettaglioAtto/originario?atto.dataPubblicazioneGazzetta=2008-
05-08&atto.codiceRedazionale=08A02872&elenco30giorni=false)
4
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SIST EN ISO 16486-4:2022
INTERNATIONAL ISO
STANDARD 16486-4
Second edition
2022-01
Plastics piping systems for the supply
of gaseous fuels — Unplasticized
polyamide (PA-U) piping systems
with fusion jointing and mechanical
jointing —
Part 4:
Valves
Systèmes de canalisations en matières plastiques pour la distribution
de combustibles gazeux — Systèmes de canalisations en polyamide
non plastifié (PA-U) avec assemblages par soudage et assemblages
mécaniques —
Partie 4: Robinets
Reference number
ISO 16486-4:2022(E)
© ISO 2022
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SIST EN ISO 16486-4:2022
ISO 16486-4:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
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SIST EN ISO 16486-4:2022
ISO 16486-4:2022(E)
Contents Page
Foreword .v
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
3.1 General . 3
3.2 Terms relating to design . 3
4 Symbols and abbreviated terms.3
5 Material. 4
5.1 Compound for valve body . 4
5.1.1 Compound . 4
5.1.2 Fusion compatibility . 4
5.2 Material for non-polyamide parts . 4
5.2.1 General . 4
5.2.2 Metal parts . 4
5.2.3 Elastomers . 5
5.2.4 Greases and lubricants . 5
5.2.5 Assembly. 5
6 General characteristics . 5
6.1 Appearance of the valve . 5
6.2 Colour . 5
6.3 Design . 5
6.3.1 General . 5
6.3.2 Valve body . 5
6.3.3 Valve terminal ends . 5
6.3.4 Operating device. 5
6.3.5 Seals . 6
7 Geometrical characteristics . 6
7.1 General . 6
7.2 Measurement of dimensions . 6
7.3 Dimensions of spigot ends for valves. 6
7.4 Dimensions of valves with electrofusion sockets . 6
7.5 Dimensions of the operating device . 6
8 Mechanical characteristics of assembled valves and regional requirements .7
8.1 General . 7
8.2 Conditioning. 7
8.3 Requirements . 7
8.3.1 Generals . 7
8.3.2 Air flow rate .12
8.4 Regional requirement .12
9 Physical characteristics .13
9.1 Conditioning.13
9.2 Requirement .13
10 Performance requirements . .13
11 Technical File .13
12 Marking . .14
12.1 General . 14
12.2 Minimum required marking of valves . 14
12.3 Additional marking. 15
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SIST EN ISO 16486-4:2022
ISO 16486-4:2022(E)
13 Delivery Conditions .15
Annex A (normative) Determination of the leaktightness of seat(s) and packing .16
Annex B (normative) Test method for leaktightness and ease of operation after tensile
loading .18
Bibliography .20
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SIST EN ISO 16486-4:2022
ISO 16486-4:2022(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves
for the transport of fluids, Subcommittee SC 7, Valves and auxiliary equipment of plastics materials, in
collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/
TC 155, Plastics piping systems and ducting systems, in accordance with the Agreement on technical
cooperation between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 16486-4:2016), which has been
technically revised.
The main changes are as follows:
— the Scope highlights that this document is valid for On/Off valves;
1)
— the Scope shows 16 bar as the regional CEN requirement for the limitation of the maximum
operating pressure (MOP);
— in 7.3 and 7.4 the nominal diameter of spigot ends or electrofusion sockets has been expanded to d
n
400 mm;
— a new subclause, 5.2.4 Greases and lubricants, has been added;
— subclause 5.2 for non-unplasticized polyamide parts has been redrafted to bring it in line with EN
1555-4. A NOTE for regional requirements has been introduced;
— subclauses 6.3.1 General, 6.3.2 Valve body, 7.5 Dimensions of the operating device and 8.1 General
have been redrafted;
— a new subclause, 6.3.3 Valve terminal ends, has been introduced for valve terminal ends;
— subclauses 6.3.4 Operating device and 6.3.5 Seals have been modified to bring them in line with EN
1555-4;
5 2
1) 1 bar = 0,1 MPa = 10 Pa; 1 MPa = 1 N/mm .
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SIST EN ISO 16486-4:2022
ISO 16486-4:2022(E)
— subclause 7.2 Measurement of dimensions has been modified to bring it in line with EN 1555-4 with
the exception that PA-U conditioning does not allow the use of test pieces earlier than 48 h after
their manufacture;
— subclause 8.4 Regional requirements has been added with reference to an extension of subclause B.1.1
for CEN;
b
— in Table 1, the number of test pieces has been added and new footnote has been inserted relating
to this addition;
— in Table 1, the condition period has been changed to 16 h;
— in Table 1, the test period has been changed to 1 000 h for hydrostatic strength (20 °C, 1 000 h);
— in Table 1, the pressure drop test been deleted, as this is covered in the new subclause 8.3.2;
— in Table 1, the operating torque for 125 mm < d ≤ 400 mm has been changed to 10 Nm < M ≤ 150;
n
j
— in Table 1, leaktightness after tensile load is added, including footnote for limiting the diameter;
— a new subclause, 5.1.2 Fusion compatibility, substitutes the former subclause 6.4;
— a new Clause 11 Technical File has become an individual paragraph in line with EN 1555-4;
— subclause 12.1 General includes a NOTE for regional marking requirements on packaging, with
reference to CEN/TS 12007-6, for CEN member countries, for example;
— Table 3 for minimum required marking of valves has been modified in line with EN 1555-4;
— former subclause 12.5 Packaging has become Clause 13 Delivery conditions, and has been modified
and extended;
— Annex A has been updated in line with EN 1555-4;
— Annex B has been modified according longitudinal stress parameters in line with ISO 17885:2021,
Table F.1;
— in Clause B.2 Test piece, the definition for the length of test piece has been redrafted;
— in Annex B, subclause B.4.4 has been added including a regional requirement.
A list of all parts in the ISO 16486 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
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SIST EN ISO 16486-4:2022
ISO 16486-4:2022(E)
Introduction
This document specifies the requirements for valves used in a piping system made from unplasticized
polyamide (PA-U) that is intended to be used for the supply of gaseous fuels.
General requirements for unplasticized polyamide (PA-U) materials used for a piping system and its
components, intended for the supply of gaseous fuels, are specified in ISO 16486-1.
Requirements and test methods for pipes are specified in ISO 16486-2 and for fittings in ISO 16486-3.
Characteristics for fitness for purpose of the system and generic fusion parameters are specified in
ISO 16486-5.
Recommended practice for installation is given in ISO 16486-6, which will not be implemented as a
European Standard under the Vienna Agreement.
[2]
NOTE Recommended practice for installation is also given in CEN/TS 12007-6 , which has been prepared
by Technical Committee CEN/TC 234, Gas infrastructure.
2)
Assessment of conformity of the system is to form the subject of the future ISO/TS 16486-7:— .
For CEN member countries, all components are to conform to the relevant EN standard(s). Alternative
standards may be applied in cases where the suitable EN standard(s) do not exist.
The ISO 16486 series covers a range of maximum operating pressures and gives requirements
concerning colours.
It is the responsibility of the purchaser or specifier to make the appropriate selections from these
aspects, taking into consideration their particular requirements and any relevant national regulations
and installation practices or codes.
2) Under preparation. Stage at the time of publication: ISO/WD TS 16486-7:2022.
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SIST EN ISO 16486-4:2022
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SIST EN ISO 16486-4:2022
INTERNATIONAL STANDARD ISO 16486-4:2022(E)
Plastics piping systems for the supply of gaseous fuels —
Unplasticized polyamide (PA-U) piping systems with fusion
jointing and mechanical jointing —
Part 4:
Valves
1 Scope
This document specifies the characteristics of valves made from unplasticized polyamide (PA-U) in
accordance with ISO 16486-1, intended to be buried and used for the supply of gaseous fuels.
It is applicable to isolating unidirectional and bi-directional valves with spigot ends or electrofusion
sockets intended to be fused with PA-U pipes or fittings conforming to ISO 16486-2 and ISO 16486-3
respectively.
Valves made from material other than unplasticized polyamide designed for the supply of gaseous fuels
conforming to the relevant standards are permitted to be used in PA-U piping systems according to the
ISO 16486 series provided they have relevant PA-U connections for butt fusion or electrofusion ends
(see ISO 16486-3). The component, i.e. the complete valve, is required to fulfil the requirements of this
document.
This document also specifies the test parameters for the test methods it describes.
In conjunction with ISO 16486-1, ISO 16486-2, ISO 16486-3 and ISO 16486-5, this document is applicable
to PA-U valves and their joints and to joints with components of PA-U and other materials intended to
be used under the following conditions:
3)
a) a maximum operating pressure (MOP) of up to and including 18 bar , or limited to 16 bar under
regional CEN requirements, at a reference temperature of 20 °C for design purposes;
NOTE 1 For the purpose of this document and the references to ISO 8233, MOP is considered to be
nominal pressure.
b) an operating temperature of −20 °C to 40 °C;
NOTE 2 For operating temperatures between 20 °C and 40 °C, derating coefficients are specified in
ISO 16486-5.
This document covers valves for pipes with a nominal outside diameter, d , ≤ 400 mm.
n
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.
ISO 291, Plastics — Standard atmospheres for conditioning and testing
ISO 307, Plastics — Polyamides — Determination of viscosity number
5
3) 1 bar = 0,1 MPa = 10 Pa; 1 MPa = 1 N/mm².
1
© ISO 2022 – All rights reserved
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SIST EN ISO 16486-4:2022
ISO 16486-4:2022(E)
ISO 1167-1, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids —
...
SLOVENSKI STANDARD
oSIST prEN ISO 16486-4:2021
01-maj-2021
Cevni sistemi iz polimernih materialov za oskrbo s plinastimi gorivi - Cevni sistemi
iz nemehčanega poliamida (PA-U) z zvari in mehanskimi spoji - 4. del: Ventili
(ISO/DIS 16486-4:2021)
Plastics piping systems for the supply of gaseous fuels - Unplasticized polyamide (PA-U)
piping systems with fusion jointing and mechanical jointing - Part 4: Valves (ISO/DIS
16486-4:2021)
Kunststoff-Rohrleitungssysteme für die Gasversorgung - Rohrleitungssysteme aus
weichmacherfreiem Polyamid (PA-U) mit Schweißverbindungen und mechanischen
Verbindungen - Teil 4: Armaturen (ISO/DIS 16486-4:2021)
Systèmes de canalisations en matières plastiques pour la distribution de combustibles
gazeux - Systèmes de canalisations en polyamide non plastifié (PA-U) avec
assemblages par soudage et assemblages mécaniques - Partie 4: Robinets (ISO/DIS
16486-4:2021)
Ta slovenski standard je istoveten z: prEN ISO 16486-4
ICS:
75.200 Oprema za skladiščenje Petroleum products and
nafte, naftnih proizvodov in natural gas handling
zemeljskega plina equipment
83.140.30 Polimerne cevi in fitingi za Plastics pipes and fittings for
snovi, ki niso tekočine non fluid use
oSIST prEN ISO 16486-4:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN ISO 16486-4:2021
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oSIST prEN ISO 16486-4:2021
DRAFT INTERNATIONAL STANDARD
ISO/DIS 16486-4
ISO/TC 138/SC 7 Secretariat: UNI
Voting begins on: Voting terminates on:
2021-03-23 2021-06-15
Plastics piping systems for the supply of gaseous fuels —
Unplasticized polyamide (PA-U) piping systems with fusion
jointing and mechanical jointing —
Part 4:
Valves
Systèmes de canalisations en matières plastiques pour la distribution de combustibles gazeux — Systèmes
de canalisations en polyamide non plastifié (PA-U) avec assemblages par soudage et assemblages
mécaniques —
Partie 4: Robinets
ICS: 75.200; 83.140.30
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 16486-4:2021(E)
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. ISO 2021
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oSIST prEN ISO 16486-4:2021
ISO/DIS 16486-4:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
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oSIST prEN ISO 16486-4:2021
ISO/DIS 16486-4:2021(E)
Contents Page
Foreword .v
Introduction .vii
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 3
3.1 General . 3
3.2 Terms relating to design . 3
4 Symbols and abbreviations . 4
5 Material . 4
5.1 Unplasticized polyamide PA-U compound . 4
5.1.1 Compound . 4
5.1.2 Fusion compatibility . 4
5.2 Material for non-polyamide parts . 4
5.2.1 General. 4
5.2.2 Metal parts . 5
5.2.3 Elastomers . 5
5.2.4 Greases and lubricants . 5
5.2.5 Assembly . 5
6 General characteristics . 5
6.1 Appearance of the valve . 5
6.2 Colour . 5
6.3 Design . 5
6.3.1 General. 5
6.3.2 Valve body . 5
6.3.3 Valve terminal ends . 6
6.3.4 Operating device . 6
6.3.5 Seals . 6
7 Geometrical characteristics . 6
7.1 General . 6
7.2 Measurement of dimensions . 6
7.3 Dimensions of spigot ends for valves . 6
7.4 Dimensions of valves with electrofusion sockets . 6
7.5 Dimensions of the operating device . 7
8 Mechanical characteristics of assembled valves and regional requirements .7
8.1 General . 7
8.2 Conditioning . 7
8.3 Requirements . 7
8.3.1 Generals . 7
8.3.2 Air flow rate .12
8.4 Regional requirement .12
9 Physical characteristics .12
9.1 Conditioning .12
9.2 Requirement .13
10 Performance requirements .13
11 Technical File .13
12 Marking .14
12.1 General General .14
12.2 Minimum required marking of valves .14
12.3 Additional marking .14
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oSIST prEN ISO 16486-4:2021
ISO/DIS 16486-4:2021(E)
13 Delivery Conditions .15
Annex A (normative) Determination of the leaktightness of seat(s) and packing .16
Annex B (normative) Test method for leaktightness and ease of operation after tensile loading .18
Bibliography .20
iv © ISO 2021 – All rights reserved
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oSIST prEN ISO 16486-4:2021
ISO/DIS 16486-4:2021(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC138, Plastics pipes, fittings and valves for
the transport of fluids, Subcommittee SC 7, Valves and auxiliary equipment of plastics, in collaboration
with the European Committee for Standardization (CEN) Technical Committee CEN/TC 155, Plastics
piping systems and ducting systems, in accordance with the Agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 16486-4:2016), which has been
technically revised.
The main changes compared to the previous edition are as follows:
— the scope highlights that this standard is valid for On/Off valves;
— the scope is showing 16 bar as regional CEN requirement for the limitation of MOP
— in 6.3 and 6.4 the nominal diameter of spigot ends or electrofusion sockets is expanded to dn 400 mm;
— 4.2.4 Greases and lubricants is added;
— 5.2 for non-unplasticized polyamide parts has been rephrased in line with FprEN 1555-4 by also
introducing a NOTE for regional requirements
— 5.3.1 General, 5.3.2 Valve body, 6.5 Dimensions of the operating device and 7.1 General are modified;
— a new paragraph 6.3.3 has been introduced for valve terminal ends;
— 6.3.4 Operating device and 6.3.5 Seals have been modified in line with FprEN 1555-4;
— 7.2 Measurement of dimensions modified in line with FprEN 1555-4 with the exception that for
PA-U conditioning does not allow to test pieces earlier then 48 h after their manufacture;
— 7.4 Regional Requirement has been added with reference to an extension of B.1.1 for CEN;
© ISO 2021 – All rights reserved v
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oSIST prEN ISO 16486-4:2021
ISO/DIS 16486-4:2021(E)
— in Table 1 the number of test pieces have been added and the footnote b references to future WD
16486-7
— in Table 1 the condition period has been changed to 16 h;
— in Table 1 the test period has been changed to 1000 h for hydrostatic strength (20 °C, 1 000 h);
— in Table 1 the pressure drop test been deleted, as this is taken up in new clause 8.3.2
— in Table 1 the operating torque for 125 mm < dn ≤ 400 mm has been changed to 10 Nm < M ≤ 150 Nm;
— in Table 1 leak tightness after tensile load is added including a footnote j for limiting the diameter;
— new 5.1.2 fusion compatibility substitutes former 6.4
— a new clause 11 Technical File, has become an individual own paragraph in line with FprEN1555-4;
— subclause 12.1 General, includes a note for regional marking requirements on packaging e.g. with
reference to future FprCEN/TS 12007-6 for CEN member countries;
— Table 4 for minimum required marking of valves has been modified in line with FprEN1555-4;
— old subclause12.5 Packaging became clause 13 Delivery conditions, which has been modified and
extended;
— Annex A has been updated in line with FprEN 1555-4:2020;
— Annex B has been modified according longitudinal stress parameters in line with DIS ISO 17885:2020
Table F.1;
— Annex B, clause B.2 Test piece has a rephrased definition for the length of test piece.
— Annex B, clause B.4.4 has been added as regional requirement.
A list of all parts in the ISO 16486 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
vi © ISO 2021 – All rights reserved
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oSIST prEN ISO 16486-4:2021
ISO/DIS 16486-4:2021(E)
Introduction
This part 4 of ISO 16486 specifies the requirements for valves used in piping system made from
unplasticized polyamide (PA-U), and which is intended to be used for the supply of gaseous fuels.
Part 1 of ISO 16486 specifies the general requirements for a piping system and its components made
from unplasticized polyamide (PA-U), and which is intended to be used for the supply of gaseous fuels.
Requirements and test methods for other components of the piping system are specified in ISO 16486-2
and ISO 16486-3.
Characteristics for fitness for purpose of the system and generic welding parameters are covered in
ISO 16486-5.
Recommended practice for installation is given in ISO 16486-6. ISO 16486-6 will not be implemented as
European Standard under the Vienna Agreement. Recommended practice for installation will be given
in future FprCEN/TS 12007-6, Gas infrastructure - Pipelines for maximum operating pressure up to and
including 16 bar - Part 6: Specific functional recommendations for unplasticized polyamide (PA-U), that has
been prepared by Technical Committee CEN/TC234 Gas infrastructure.
[1]
Assessment of conformity of the system is to form the subject of WD ISO/TS 16486-7 .
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oSIST prEN ISO 16486-4:2021
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oSIST prEN ISO 16486-4:2021
DRAFT INTERNATIONAL STANDARD ISO/DIS 16486-4:2021(E)
Plastics piping systems for the supply of gaseous fuels —
Unplasticized polyamide (PA-U) piping systems with fusion
jointing and mechanical jointing —
Part 4:
Valves
1 Scope
This part of ISO 16486 specifies the characteristics of valves made from unplasticized polyamide (PA-
U) in accordance with ISO 16486 1, intended to be buried and used for the supply of gaseous fuels.
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 EN ISO 16486-2 and EN ISO 16486-3
respectively.
Valves made from other material than unplasticized polyamide designed for the supply of gaseous
fuels conforming to the relevant standards are permitted to be used in PA-U piping system according
to ISO 16486 provided they have relevant PA-U connections for butt fusion or electrofusion ends
(see ISO 16486 3). The component, i.e. the complete valve, shall fulfil the requirements of this part of
ISO 16486.
It also specifies the test parameters for the test methods referred to in this part of ISO 16486.
In conjunction with Parts 1, 2, 3 and 5 of ISO 16486 EN-1555, it is applicable to PA-U PE valves, their
joints and to joints with components of PA-U PE and other materials intended to be used under the
following conditions:
1)
a) a maximum operating pressure, MOP, up to and including 18 bar 10 bar1, or as regional CEN
requirement limited to 16 bar, at a reference temperature of 20 °C for design purposes;
NOTE 1 For the purpose of this document and the references to ISO/DIS 8233, MOP is considered to be
nominal pressure.
b) an operating temperature of between -20 °C to 40 °C;
NOTE 2 For operating temperatures between 20 °C and 40 °C, derating coefficients are defined in ISO DIS
16486-5.
ISO 16486 (all parts) covers a range of maximum operating pressures and gives requirements
concerning colours.
NOTE 3 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.
It is applicable to bi-directional valves with spigot end or electrofusion socket intended to be jointed
with PA-U pipes conforming to ISO 16486-2 without any fittings or with PA-U fittings conforming to
ISO 16486 3.
This part of ISO 16486 covers valves for pipes with a nominal outside diameter, dn, ≤400 mm.
5
1) 1 bar = 0,1 MPa = 10 Pa; 1 MPa = 1 N/mm²
© ISO 2021 – All rights reserved 1
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oSIST prEN ISO 16486-4:2021
ISO/DIS 16486-4:2021(E)
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 291, Plastics — Standard atmospheres for conditioning and testing
ISO 307, Plastics — Polyamides — Determination of viscosity number
ISO 1110, Plastics — Polyamides — Accelerated conditioning of test specimens
ISO 1167-1, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids — Determination of
the resistance to internal pressure — Part 1: General method
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 3126, Plastics piping systems — Plastics components — Determination of dimensions
ISO 3127, Thermoplastics pipes — Determination of resistance to external blows — Round-the-clock method
ISO 8233, Thermoplastics valves — Torque — Test method
ISO 9393-1:2004, Thermoplastics valves for industrial applications — Pressure test methods and
requirements — Part 1: General
ISO 16486-1, Plastics piping systems for the supply of gaseous fuels — Unplasticized polyamide (PA-U)
piping systems with fusion jointing and mechanical jointing — Part 1: General
ISO 16486-2, Plastics piping systems for the supply of gaseous fuels — Unplasticized polyamide (PA-U)
piping systems with fusion jointing and mechanical jointing — Part 2: Pipes
ISO 16486-3:2012, Plastics piping systems for the supply of gaseous fuels — Unplasticized polyamide (PA-
U) piping systems with fusion jointing and mechanical jointing — Part 3: Fittings
ISO 16486-5, Plastics piping systems for the supply of gaseous fuels — Unplasticized polyamide (PA-U)
piping systems with fusion jointing and mechanical jointing — Part 5: Fitness for purpose of the system
ISO 17778, Plastics piping systems — Fittings, valves and ancillaries — Determination of gaseous flow
rate/pressure drop relationships
EN 736-1, Valves Terminology — Part 1: Definition of types of valves
EN 736-2, 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 mechanisms
EN 1704, Plastics piping systems — Thermoplastics valves — Test method for the integrity of a valve after
temperature cycling under bending
EN 1705, Plastics piping systems — Thermoplastics valves — Test method for the integrity of a valve after
an external blow
EN 12100, Plastics piping systems — Polyethylene (PE) valves — Test method for resistance to bending
between supports
EN 12119, Plastics piping systems — Polyethylene (PE) valves — Test method for resistance to thermal cycling
2 © ISO 2021 – All rights reserved
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oSIST prEN ISO 16486-4:2021
ISO/DIS 16486-4:2021(E)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 16486-1, EN 736-1, EN 736-2
and the following apply.
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at https:// www .iso .org/ obp
3.1 General
3.1.1
external leaktightness
leaktightness (3.1.1) of the valve body (3.1.4) enveloping the space containing the gas, with respect to
the atmosphere
3.1.2
internal leaktightness
leaktightness (3.1.1) between the inlet and the outlet of the valve, with the valve in the closed position
3.1.3
leakage
emission of gas from a valve body (3.1.4) or any component of a valve
3.1.4
valve body
main part of a valve which contains the obturating device (closing element, the seat, the packing seals
and the operating stop), as applicable and provides the terminal ends for connection to the PA-U pipe/
fittings
3.1.5
operating device
part of a valve for connection with the operating key which allows the opening and the closing of the valve
3.2 Terms relating to design
3.2.1
Isolating valve valve
valve intended for use only in the closed or fully open position.
[SOURCE: EN 736-1]
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]
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]
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oSIST prEN ISO 16486-4:2021
ISO/DIS 16486-4:2021(E)
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 (3.2.2)
[SOURCE: EN 736-3:2008]
4 Symbols and abbreviations
For the purpose of this document the symbols and abbreviations given in ISO 16486-1 apply.
5 Material
5.1 Unplasticized polyamide PA-U compound
5.1.1 Compound
The compound from which the valve body with spigot or electrofusion socket is made shall be in
accordance with ISO 16486-1.
The PA-U components of the valve shall be made from virgin material conforming to ISO 16486-1.
5.1.2 Fusion compatibility
Components made from PA U 11 shall be heat fusion jointed only to components made from PA U 11.
Components made from PA U 12 shall be heat fusion jointed only to components made from PA U 12.
Components made from PA U are not fusion compatible with components made from other polymers.
5.2 Material for non-polyamide parts
5.2.1 General
All components shall conform to the re
...
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