iTeh StandardsiTeh Standards
EURUSD
Your shopping cart is empty.
ISO

ISO 4437-3:2024

(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 ISO 4437-1, ISO 4437-2, ISO 4437-4 and ISO 4437-5, this document is applicable to PE pipes, fittings and valves, their joints, and 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[1], at a reference temperature of 20 °C for design purposes; b) an operating temperature between −20 °C and 40 °C. For operating temperatures between 20 °C and 40 °C, derating coefficients are defined in ISO 4437-5. The ISO 4437 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 account their particular requirements and any relevant national regulations and installation practices or codes. This document is applicable for fittings of the following types: — electrofusion socket fittings; — electrofusion saddle fittings; — spigot end fittings (for butt fusion using heated tools and electrofusion socket fusion); — socket fusion fittings; — mechanical fittings. NOTE 1 The fittings can be, for example, in the form of couplers, saddles, equal and reduced tees, reducers, elbows, bends or end caps. NOTE 2 Fabricated fittings are normally not used for gas applications except for larger dimensions or in the absence of other solutions. Guidance can be found in ISO 4427-3:2019, Annex B. [1] 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2.

Systèmes de canalisations en plastique pour la distribution de combustibles gazeux — Polyéthylène (PE) — Partie 3: Raccords

General Information

Status
Published
Publication Date
13-Feb-2024
ICS
75.200 - Petroleum products and natural gas handling equipment
83.140.30 - Plastics pipes and fittings for non fluid use
Technical Committee
ISO/TC 138/SC 4 - Plastics pipes and fittings for the supply of gaseous fuels
Drafting Committee
ISO/TC 138/SC 4/WG 3 - PE Pipe Systems
Current Stage
9092 - International Standard to be revised
Completion Date
19-Sep-2024
Ref Project

Relations

Revises
ISO 4437-3:2014 - Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) — Part 3: Fittings
Effective Date
23-Apr-2020

Buy Standard

ISO 4437-3:2024 - Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) — Part 3: Fittings Released:14. 02. 2024ISO 4437-3:2024 - Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) — Part 3: Fittings Released:14. 02. 2024
PreviousNext
Standard
ISO 4437-3:2024 - Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) — Part 3: Fittings Released:14. 02. 2024
English language
35 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)


International
Standard
ISO 4437-3
Second edition
Plastics piping systems for
2024-02
the supply of gaseous fuels —
Polyethylene (PE) —
Part 3:
Fittings
Systèmes de canalisations en plastique pour la distribution de
combustibles gazeux — Polyéthylène (PE) —
Partie 3: Raccords
Reference number
© ISO 2024
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
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 3
3.1 Terms related to geometry .3
3.2 Terms related to material .4
3.3 Terms related to material characteristics .5
3.4 Terms related to service conditions .5
3.5 Terms related to joints .6
4 Symbols and abbreviated terms. 6
4.1 Symbols .6
4.2 Abbreviated terms .8
5 Material. 9
5.1 PE compound for fittings .9
5.2 Material for non-polyethylene parts .9
5.2.1 General .9
5.2.2 Metal parts .9
5.2.3 Sealing materials .9
5.2.4 Other materials .10
6 General characteristics . 10
6.1 Appearance .10
6.2 Colour .10
6.3 Design .10
6.4 Appearance of factory-made joints .10
6.5 Electrical characteristics for electrofusion fittings .10
7 Geometrical characteristics .11
7.1 Measurement of dimensions .11
7.2 Dimensions of electrofusion socket fittings .11
7.2.1 Diameters and lengths of electrofusion sockets .11
7.2.2 Wall thicknesses . 13
7.2.3 Out-of-roundness of the bore of a fitting (at any point) . 13
7.2.4 Spigots. 13
7.2.5 Other dimensions. 13
7.3 Dimensions of electrofusion saddle fittings . 13
7.4 Dimensions of spigot end fittings .14
7.4.1 Diameters and lengths .14
7.4.2 Wall thickness of the fusion end .16
7.4.3 Wall thickness of the fitting body .16
7.4.4 Other dimensions.16
7.5 Dimensions of socket fusion fittings .16
7.6 Design and dimensions of mechanical fittings .16
7.6.1 General .16
7.6.2 Mechanical fittings with polyethylene spigot ends .17
7.6.3 Mechanical fittings with polyethylene electrofusion sockets .17
7.6.4 Threads .17
8 Mechanical characteristics . 17
8.1 General .17
8.2 Requirements .17
8.3 Modifications of the fitting . 20
8.4 Performance requirements . 20

iii
9 Physical characteristics .21
9.1 Conditioning.21
9.2 Requirements .21
10 Performance requirements . .22
11 Technical information.22
12 Marking . .22
12.1 General . 22
12.2 Minimum required marking of fittings . 23
12.3 Additional marking. 23
12.4 Fusion system recognition . 23
13 Delivery conditions .24
Annex A (normative) Socket fusion fittings .25
Annex B (informative) Examples of typical terminal connections for electrofusion fittings .27
Annex C (normative) Short-term pressure test method .30
Annex D (normative) Tensile test for fitting/pipe assemblies .32
Annex E (informative) Formulae for calculating the equivalent dimensions of non-metric
electrofusion socket fitting series .34
Bibliography .
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

This May Also Interest You

ISO
ISO 4437-5:2024(Main)
Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) — Part 5: Fitness for purpose of the system

This document specifies the requirements of fitness for purpose of assembled polyethylene (PE) piping systems in the field of the supply of gaseous fuels. It specifies the requirements for electrofusion, socket fusion, butt fusion and mechanical joints. It specifies the method of preparation of test piece joints and the tests to be carried out on these joints for assessing the fitness for purpose of the system under normal and extreme conditions. It specifies the test parameters for the test methods referred to in this document. This document is intended to be used only by the product manufacturer and test laboratories to assess the performance of components in accordance with ISO 4437-2, ISO 4437-3 and ISO 4437-4 when joined together under normal and extreme conditions in accordance with this document. It is not intended for on-site testing of pipe systems. In conjunction with ISO 4437-1, ISO 4437-2, ISO 4437-3 and ISO 4437-4, this document is applicable to PE pipes, fittings and valves, their joints, and 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[1], at a reference temperature of 20 °C for design purposes; b) an operating temperature between −20 °C and 40 °C. For operating temperatures between 20 °C and 40 °C, derating coefficients are defined in Annex A. The ISO 4437 series covers a range of MOPs and gives requirements concerning colours. [1] 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2.

  • Standard
    14 pages
    English language
    sale 15% off
ISO
ISO 4437-1:2024(Main)
Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) — Part 1: General

This document specifies materials and the general aspects of polyethylene (PE) 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 ISO 4437-2, ISO 4437-3, ISO 4437-4 and ISO 4437-5, this document is applicable to PE pipes, fittings and valves, their joints, and 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[1], at a reference temperature of 20 °C for design purposes; b) an operating temperature between −20 °C and 40 °C. For operating temperatures between 20 °C and 40 °C, derating coefficients are defined in ISO 4437-5. The ISO 4437 series covers a range of MOPs and gives requirements concerning colours. 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. [1] 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2.

  • Standard
    20 pages
    English language
    sale 15% off
ISO
ISO 4437-2:2024(Main)
Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) — Part 2: Pipes

This document specifies the characteristics of pipes made from polyethylene (PE) 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 ISO 4437-1, ISO 4437-3, ISO 4437-4 and ISO 4437-5, this document is applicable to PE pipes, fittings and valves, their joints, and 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[1], at a reference temperature of 20 °C for design purposes; b) an operating temperature between −20 °C and 40 °C. For operating temperatures between 20 °C and 40 °C, derating coefficients are defined in ISO 4437-5. The ISO 4437 series covers a range of MOPs and gives requirements concerning colours. This document is applicable to three types of pipes: — PE pipes (outside diameter, dn) including any identification stripes; — PE pipes with co-extruded layers on either or both the outside and/or inside of the pipe (total outside diameter, dn) as specified in Annex A, where all PE layers have the same MRS rating; — PE pipes (outside diameter, dn) with a peelable and contiguous thermoplastics additional layer on the outside of the pipe ("coated pipe") as specified in Annex B. 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. [1] 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2.

  • Standard
    23 pages
    English language
    sale 15% off
ISO
ISO 16486-1:2023(Main)
Plastics piping systems for the supply of gaseous fuels — Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing — Part 1: General

This document specifies the general properties of unplasticized polyamide (PA-U) compounds for the manufacture of pipes, fittings and valves made from these compounds, intended to be buried and used for the supply of gaseous fuels. It also specifies the test parameters for the test methods to which it refers. The ISO 16486 series is applicable to PA-U piping systems, the components of which are connected by fusion jointing and/or mechanical jointing. This document establishes a calculation and design scheme on which to base the maximum operating pressure (MOP) of a PA-U piping system. NOTE For the purpose of this document the term gaseous fuels includes, for example, natural gas, methane, butane, propane, hydrogen, manufactured gas, biogas, and mixtures of these gases.

  • Standard
    23 pages
    English language
    sale 15% off
  • Standard
    24 pages
    French language
    sale 15% off
ISO
ISO 16486-6:2023(Main)
Plastics piping systems for the supply of gaseous fuels - Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing — Part 6: Code of practice for design, handling and installation

This document specifies a code of practice dealing with unplasticized polyamide (PA-U) pipes and fittings for buried pipeline systems outside buildings and designed to transport gaseous fuels (as defined in ISO 16486-1, e.g. methane, LPG, manufactured gas and hydrogen) within the temperature range –20 °C to +40 °C. This document also gives appropriate temperature-related requirements. The code of practice covers mains and service lines whose components are prepared for fusion or mechanical jointing and gives instructions for the design, storage, handling, transportation, laying conditions and fusion quality control of PA-U pipes and fittings as well as subsequent joint testing, backfilling, pipe system testing and commissioning. NOTE Principal information for rehabilitation can be found in ISO 11295 for classification, ISO 11299-1 and ISO 11299-2 for renovation, and ISO 21225-1 and ISO 21225-2 for trenchless replacement. More detailed national standards or codes of practice can exist. This document is intended to be applied in association with such national standards or codes of practice related to the above-mentioned basic principles. The jointing methods covered by this document are: — butt fusion jointing (see Annex A); — electrofusion jointing (see Annex B) and — mechanical jointing (see Annex C). In the case of ground movement or shaking (e.g. earthquakes, etc.) precautions mentioned in this document can need to be implemented following guidelines provided by authorities (e.g. EN 1998-4, EN 12007-1:2012, Annex A etc.). Workers' health and safety issues are outside the scope of this document

  • Standard
    41 pages
    English language
    sale 15% off
ISO
ISO/TS 16486-7:2023(Main)
Plastics piping systems for the supply of gaseous fuels — Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing — Part 7: Assessment of conformity

This document gives guidance and requirements for the assessment of conformity of compounds, products, joints and assemblies in accordance with the applicable part(s) of the ISO 16486 series which are intended to be included in the manufacturer’s quality plan as part of the quality management system and for the establishment of certification procedures. NOTE 1 A basic test matrix in Annex B provides an overview of the testing scheme. It is recommended for the manufacturer to have a management system such as ISO 9001[4] or equivalent. NOTE 2 If certification is involved, certification bodies and inspection bodies operating according to ISO/IEC 17065 and ISO/IEC 17020 are considered to be competent. In conjunction with the other parts of the ISO 16486 series (see Clause 2), this document is applicable to unplasticized polyamide (PA-U) piping systems intended to be buried and used for the supply of gaseous fuels. It is applicable to PA-U pipes, fittings and valves, as well as to their joints and to joints with components of other materials intended to be used under the following conditions: a) a maximum operating pressure (MOP) up to and including 18 bar[1] (the MOP is limited to 16 bar for CEN member countries, where ISO 16486-6 is replaced by CEN/TS 12007-6[1]); b) an operating temperature of 20 °C as the reference temperature. NOTE 3 For operating temperatures different to 20 °C, derating coefficients can be used (see ISO 16486-6). CEN member countries use CEN/TS 12007-6[1] and ISO/TS 16486-7 (this document) as a basis, but they can also request additional requirements. For non-CEN member countries, information for dealing with special cases for PA-U can be found in ISO/TS 16486-7 (this document) and PPI TR-3.[7] For mechanical fittings conforming to ISO 17885, guidance for assessment of conformity is not given in this document. When requested, a quality plan based on the tests mentioned can be set up in agreement between user and manufacturer. The ISO 16486 series covers a range of maximum operating pressures and gives requirements concerning colours. NOTE 4 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. [1] 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2.

  • Technical specification
    33 pages
    English language
    sale 15% off
ISO
ISO/TS 16486-8:2022(Main)
Plastics piping systems for the supply of gaseous fuels — Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing — Part 8: Training and assessment of fusion operators

This document specifies the training, assessment and approval of fusion operators, with the aim of establishing and maintaining their competency in the construction of unplasticized polyamide (PA-U) piping systems for the supply of gaseous fuels in accordance with ISO 16486‑6. It covers the butt fusion and electrofusion fusion jointing techniques and considers both the theoretical and practical knowledge necessary for making high-quality fusion joints.

  • Technical specification
    10 pages
    English language
    sale 15% off
ISO
ISO 16486-5:2021(Main)
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

This document specifies the requirements of fitness for purpose of unplasticized polyamide (PA-U) piping system, intended to be buried and used for the supply of gaseous fuels. It also specifies the definitions of electrofusion and butt fusion joints. This document specifies the method of preparation of test piece joints and the tests to be carried out on these joints for assessing the fitness for purpose of the system under normal and extreme conditions. It also specifies the test parameters for the test methods to which it refers. The ISO 16486 series is applicable to PA-U piping systems, the components of which are connected by fusion jointing and/or mechanical jointing. In conjunction with the other parts of ISO 16486, it is applicable to PA-U fittings, their joints and to joints with components of PA-U.

  • Standard
    14 pages
    English language
    sale 15% off
  • Standard
    14 pages
    English language
    sale 15% off
  • Standard
    15 pages
    French language
    sale 15% off
  • Standard
    15 pages
    French language
    sale 15% off
ISO
ISO 16486-2:2020(Main)
Plastics piping systems for the supply of gaseous fuels — Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing — Part 2: Pipes

This document specifies the physical and mechanical properties of pipes 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 also specifies the test parameters for the test methods to which it refers. The ISO 16486 series of standards is applicable to PA-U piping systems, the components of which are connected by fusion jointing and/or mechanical jointing. In addition, this document lays down dimensional characteristics and requirements for the marking of pipes. Pipes conforming to this document are jointed typically by using mechanical, electrofusion or butt fusion techniques.

  • Standard
    14 pages
    English language
    sale 15% off
  • Standard
    14 pages
    English language
    sale 15% off
  • Standard
    16 pages
    French language
    sale 15% off
  • Standard
    16 pages
    French language
    sale 15% off
ISO
ISO 16486-3:2020(Main)
Plastics piping systems for the supply of gaseous fuels — Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing — Part 3: Fittings

This document specifies the physical and mechanical properties of fittings 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 also specifies the test parameters for the test methods to which it refers. The ISO 16486 series is applicable to PA-U piping systems, the components of which are connected by fusion jointing and/or mechanical jointing. In addition, it lays down dimensional characteristics and requirements for the marking of fittings. In conjunction with the other parts of the ISO 16486 series, this document is applicable to PA-U fittings, their joints, joints with components of PA-U and joints with mechanical fittings of other materials, and to the following fitting types: — fusion fittings (electrofusion fittings and butt fusion fittings), and — transition fittings.

  • Standard
    23 pages
    English language
    sale 15% off
  • Standard
    23 pages
    English language
    sale 15% off
  • Standard
    24 pages
    French language
    sale 15% off
  • Standard
    24 pages
    French language
    sale 15% off