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1、AS/NZS 4158:2003Australian/New Zealand StandardThermal-bonded polymeric coatings on valves and fittings for water industry purposesThe Standard is downloaded from bzfxw Standard SharingAS/NZS 4158:2003This Joint Australian/New Zealand Standard was prepared by Joint Technical Committee WS-022, Valves
2、 for Water Supply Purposes. It was approved on behalf of the Council of Standards Australia on 3 January 2003 and on behalf of the Council of Standards New Zealand on 24 January 2003.This Standard was published on 5 March 2003.The following are represented on Committee WS-022:Australian Industry Gro
3、upAustralian Chamber of CommerceAustralian Valve Manufacturers AssociationBusiness New ZealandMaster Plumbers AustraliaNew Zealand Metal Casting Industry AssociationNew Zealand Water and Waste AssociationSociety of Mechanical Engineers AustraliaPlastics Pipe Institute Association of AustraliaWater I
4、ndustry AllianceWater Services Association of AustraliaKeeping Standards up-to-dateStandards are living documents which reflect progress in science, technology and systems. To maintain their currency, all Standards are periodically reviewed, and new editions are published. Between editions, amendmen
5、ts may be issued. Standards may also be withdrawn. It is important that readers assure themselves they are using a current Standard, which should include any amendments which may have been published since the Standard was purchased.Detailed information about joint Australian/New Zealand Standards ca
6、n be found by visiting the Standards Web Shop at standards .au or Standards New Zealand web site at standards.co.nz and looking up the relevant Standard in the on-line catalogue.Alternatively, both organizations publish an annual printed Catalogue with full details of all current Standards. For more
7、 frequent listings or notification of revisions, amendments and withdrawals, Standards Australia and Standards New Zealand offer a number of update options. For information about these services, users should contact their respective national Standards organization.We also welcome suggestions for imp
8、rovement in our Standards, and especially encourage readers to notify us immediately of any apparent inaccuracies or ambiguities. Please address your comments to the Chief Executive of either Standards Australia or Standards New Zealand at the address shown on the back cover.This Standard was issued
9、 in draft form for comment as DR 02420.Australian/New Zealand StandardThermal-bonded polymeric coatings on valves and fittings for water industry purposesOriginated as AS/NZS 4158.1:1994. Previous edition 1996.Second edition 2003.Reissued incorporating Amendment No. 1 (September 2005).COPYRIGHT Stan
10、dards Australia/Standards New ZealandAll rights are reserved. No part of this work may be reproduced or copied in any form or by any means, electronic or mechanical, including photocopying, without the written permission of the publisher.Jointly published by Standards Australia, GPO Box 476, Sydney,
11、 NSW 2001 and StandardsNew Zealand, Private Bag 2439, Wellington 6020ISBN 0 7337 5033 8The Standard is downloaded from bzfxw Standard SharingPREFACEThis Standard was prepared by the Joint Standards Australia/Standards New Zealand Committee WS-022, Valves For Water Supply Purposes, at the request of
12、manufacturers and users of polymeric coatings for valves and fittings, to supersede AS/NZS 4158:1996.This Standard incorporates Amendment No. 1 (September 2005). The changes required by the Amendment are indicated in the text by a marginal bar and amendment number against the clause, note, table, fi
13、gure or part thereof affected.The objective of this Standard is to provide requirements and performance tests for coating systems for valves and fittings used in supply systems including potable water, recycled water and wastewater systems, together with default compliance requirements for the use o
14、f manufacturers and certification bodies.Changes to the previous edition area as follows:(a) The previous edition of the Standard covered fusion-bonded epoxies and polyamides which were typically used at that time. This edition encompasses both thermoplastic and thermosetting coating materials(b) The limiting temperature for use has been changed to 50C to be consistent with the hot water immersion test temperature, which was reduced to accommodate thermoplast
