1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-21576-7 SANS 22391-3:2008 Edition 1 ISO 22391-3:2007 Edition 1SOUTH AFRICAN NATIONAL STANDARD Plastics piping systems for hot and cold wat
4、er installations Polyethylene of raised temperature resistance (PE-RT) Part 3: Fittings This national standard is the identical implementation of ISO 22391-3:2007 and is adopted with the permission of the International Organization for Standardization. Published by SABS Standards Division 1 Dr Lateg
5、an Road Groenkloof Private Bag X191 Pretoria 0001 Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS This standard may only be used and printed by approved subscription and freemailing clients of the SABS.SANS 22391-3: 2008 Edition 1 ISO 22391-3: 2007 Edition 1 Table of changes Change No.
6、 Date Scope National foreword This South African standard was approved by National Committee SABS SC 138H, Water and sanitation Equipment and systems Plastics pipes and fittings, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This S
7、ANS document was published in December 2008. This standard may only be used and printed by approved subscription and freemailing clients of the SABS. Reference number ISO 22391-3:2007(E) ISO 2007INTERNATIONAL STANDARD ISO 22391-3 First edition 2007-01-15 Plastics piping systems for hot and cold wate
8、r installations Polyethylene of raised temperature resistance (PE-RT) Part 3: Fittings Systmes de canalisations en plastique pour les installations deau chaude et froide Polythylne de meilleure rsistance la temprature (PE-RT) Partie 3: Raccords SANS 22391-3:2008This standard may only be used and pri
9、nted by approved subscription and freemailing clients of the SABS.ISO 22391-3:2007(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licens
10、ed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the
11、 software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to
12、 it is found, please inform the Central Secretariat at the address given below. ISO 2007 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without per
13、mission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2007 All rights res
14、ervedSANS 22391-3:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 22391-3:2007(E) ISO 2007 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Terms, definitions, symbols and abbrevi
15、ated terms. 2 3.2 Mechanical fittings 3 3.3 Fittings for heat fusion. 3 4 Material characteristics 3 4.1 Plastics fitting material. 3 4.2 Metallic fitting material. 5 4.3 Influence on water intended for human consumption 5 5 General characteristics 5 5.1 Appearance . 5 5.2 Opacity. 5 6 Geometrical c
16、haracteristics. 5 6.1 General. 5 6.2 Dimensions of sockets for socket fusion and electrofusion fittings 6 6.3 Dimensions of metallic fittings 10 7 Mechanical characteristics of plastics fittings 10 7.1 General. 10 7.2 Fitting material identical to PE-RT compound. 10 7.3 Fitting made from PE-RT but n
17、ot identical to PE-RT compound. 10 7.4 Fittings made from plastics other than PE-RT 10 8 Physical and chemical characteristics of plastics components . 11 8.1 Melt mass flow rate. 11 9 Sealing elements. 11 10 System performance requirements 11 11 Marking 12 11.1 General requirements. 12 11.2 Minimum
18、 required marking 12 SANS 22391-3:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 22391-3:2007(E) iv ISO 2007 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national sta
19、ndards 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 or
20、ganizations, 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. International Standards are drafted in accordance with the rules give
21、n in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 7
22、5 % of the member bodies casting a vote. 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. ISO 22391-3 was prepared by Technical Committee ISO/TC 138,
23、Plastics pipes, fittings and valves for the transport of fluids, Subcommittee SC 2, Plastics pipes and fittings for water supplies. ISO 22391 consists of the following parts, under the general title Plastics piping systems for hot and cold water installations Polyethylene of raised temperature resis
24、tance (PE-RT): Part 1: General Part 2: Pipes Part 3: Fittings Part 5: Fitness for purpose of the system SANS 22391-3:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 22391-3:2007(E) ISO 2007 All rights reserved v Introduction ISO 22391,
25、the system standard, specifies the requirements for a piping system and its components when made from polyethylene of raised temperature resistance (PE-RT). The piping system is intended to be used for hot and cold water installations. In respect of potential adverse effects on the quality of water
26、intended for human consumption caused by the products covered by ISO 22391: a) no information is provided as to whether the products may be used without restriction; b) existing national regulations concerning the use and/or characteristics of the products remain in force. This part of ISO 22391 spe
27、cifies the characteristics of fittings. At the time of its publication, system standards for piping systems of other plastics materials used for the same application are ISO 15874:2003, Plastics piping systems for hot and cold water installations Polypropylene (PP), ISO 15875:2003, Plastics piping s
28、ystems for hot and cold water installations Crosslinked polyethylene (PE-X), ISO 15876:2003, Plastics piping systems for hot and cold water installations Polybutylene (PB), and ISO 15877:2003, Plastics piping systems for hot and cold water installations Chlorinated poly(vinyl chloride) (PVC-C). SANS
29、 22391-3:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.SANS 22391-3:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.INTERNATIONAL STANDARD ISO 22391-3:2007(E) ISO 2007 All rights
30、 reserved 1 Plastics piping systems for hot and cold water installations Polyethylene of raised temperature resistance (PE-RT) Part 3: Fittings 1 Scope This part of ISO 22391 specifies the characteristics of fittings for piping systems made from polyethylene of raised temperature resistance (PE-RT),
31、 intended to be used for hot and cold water installations within buildings for the conveyance of water whether or not the water is intended for human consumption (domestic systems) or heating systems under the design pressures and temperatures appropriate to the class of application according to ISO
32、 22391-1. It covers a range of service conditions (classes of application), design pressures and pipe dimension classes, and also specifies test parameters and test methods. When used in conjunction with the other parts of ISO 22391, it is applicable to fittings made from PE-RT, as well as to those
33、made from other materials, intended to be fitted to pipes conforming to ISO 22391-2 for hot and cold water installations, the joints of which are in accordance with ISO 22391-5. This part of ISO 22391 is applicable to the following types of fitting: mechanical fittings; socket fusion fitting; electr
34、ofusion fittings; fittings with incorporated inserts. It is not applicable for values of design temperature, maximum design temperature or malfunction temperature in excess of those specified in ISO 22391-1. NOTE It is the responsibility of the purchaser or specifier to make the appropriate selectio
35、ns from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition
36、 cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 7-1, Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, tolerances and designation ISO 228-1, Pipe threads where pressure-tight joints are n
37、ot made on the threads Part 1: Dimensions, tolerances and designation SANS 22391-3:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 22391-3:2007(E) 2 ISO 2007 All rights reservedISO 1133:2005, Plastics Determination of the melt mass-flow
38、 rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics 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 1167-2:2006, Thermoplastics pipes, fittings and assemblies for
39、 the conveyance of fluids Determination of the resistance to internal pressure Part 2: Preparation of pipe test pieces ISO 3126:2005, Plastics piping systems Plastics components Determination of dimensions ISO 7686:2005, Plastics pipes and fittings Determination of opacity ISO 9080, Plastics piping
40、and ducting systems Determination of long-term hydrostatic strength of thermoplastic materials in pipe form by extrapolation ISO 12092, Fittings, valves and other piping system components made of unplasticized poly(vinyl chloride) (PVC-U), chlorinated poly(vinyl chloride) (PVC-C), acrylonitrile-buta
41、diene-styrene (ABS) and acrylonitrile- styrene-acrylester (ASA) for pipes under pressure Resistance to internal pressure Test method ISO 23711, Elastomeric seals Requirements for materials for pipe joint seals used in water and drainage applications Thermoplastic elastomers ISO 22391-1, Plastics pip
42、ing systems for hot and cold water installations Polyethylene of raised temperature resistance (PE-RT) Part 1: General ISO 22391-2:2006, Plastics piping systems for hot and cold water installations Polyethylene of raised temperature resistance (PE-RT) Part 2: Pipes ISO 22391-5, Plastics piping syste
43、ms for hot and cold water installations Polyethylene of raised temperature resistance (PE-RT) Part 5: Fitness for purpose of the system EN 681-1, Elastomeric seals Materials requirements for pipe joint seals used in water and drainage applications Part 1: Vulcanized rubber EN 681-2, Elastomeric seal
44、s Materials requirements for pipe joint seals used in water and drainage applications Part 2: Thermoplastic elastomers EN 1254-3:1998, Copper and copper alloys Plumbing fittings Part 3: Fittings with compression ends for use with plastics pipes EN 10088-1:1995, Stainless steels Part 1: List of stain
45、less steels EN 12107, Plastics piping systems Injection-moulded thermoplastics fittings, valves and ancillary equipment Determination of the long-term hydrostatic strength of thermoplastics materials for injection moulding of piping components 3 Terms, definitions, symbols and abbreviated terms For
46、the purposes of this document, the terms, definitions, symbols and abbreviated terms given in ISO 22391-1 and the following apply. 3.1 fitting component of a piping system which connects two or more pipes and/or fittings together, without any further function SANS 22391-3:2008This standard may only
47、be used and printed by approved subscription and freemailing clients of the SABS.ISO 22391-3:2007(E) ISO 2007 All rights reserved 3 3.2 Mechanical fittings 3.2.1 compression fitting fitting in which the joint is made by the compression of a ring or sleeve on the outside wall of the pipe with or with
48、out additional sealing elements and with internal support 3.2.2 crimped fitting fitting in which the joint is made by crimping of the fitting and/or a ring on the outside wall of the pipe by means of a special tool 3.2.3 flanged fitting fitting in which the pipe connection consists of two mating fla
49、nges which are mechanically pressed together and sealed by the compression of an elastomeric sealing element between them 3.2.4 flat seat union fitting fitting in which the pipe connection consists primarily of two components, at least one of which normally incorporates a flat sealing surface, which are mechanically pressed together by means of a screwed nut or similar and sealed by the compression of an elastomeric sealing elemen
