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1、AS/NZS 3499:1997 Australian/New Zealand Standard Flexible tube connectors for water supply Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 29 Sep 2006 AS/NZS 3499:1997 This Joint Australian/New Zealand Standard was prepared by Joint Technical Committee WS/1, Water Fittings. It was approved on behalf of
2、 the Council of Standards Australia on 5 September 1997 and on behalf of the Council of Standards New Zealand on 17 October 1997. It was published on 5 December 1997. The following interests are represented on Committee WS/1: AUSTAP Australian Association of Certification Bodies Australian Chamber o
3、f Commerce and Industry Australian Valve Manufacturers Association Brisbane Water Department of Land and Water Conservation, N.S.W. Institute of Plumbing Australia Master Plumbers Association of South Australia Metal Trades Industry Association of Australia New Zealand Engineering Federation New Zea
4、land Manufacturers Federation New Zealand Society of Master Plumbers and Gasfitters Queensland Brassware Industry Advisory Council Queensland Department of Local Government and Planning South Australian Water Corporation Sydney Water Corporation Water Corporation, W.A. Water Industry Technical Stand
5、ards Unit Review of Standards. To keep abreast of progress in industry, Joint Australian/ New Zealand Standards are subject to periodic review and are kept up to date by the issue of amendments or new editions as necessary. It is important therefore that Standards users ensure that they are in posse
6、ssion of the latest edition, and any amendments thereto. Full details of all Joint Standards and related publications will be found in the Standards Australia and Standards New Zealand Catalogue of Publications; this information is supplemented each month by the magazines The Australian Standard and
7、 Standards New Zealand, which subscribing members receive, and which give details of new publications, new editions and amendments, and of withdrawn Standards. Suggestions for improvements to Joint Standards, addressed to the head office of either Standards Australia or Standards New Zealand, are we
8、lcomed. Notification of any inaccuracy or ambiguity found in a Joint Australian/New Zealand Standard should be made without delay in order that the matter may be investigated and appropriate action taken. This Standard was issued in draft form for comment as DR 96565. Accessed by UNIVERSITY OF SOUTH
9、 AUSTRALIA on 29 Sep 2006 AS/NZS 3499:1997 Australian/New Zealand Standard Flexible tube connectors for water supply Originated in Australia as AS 3499 1992. Previous edition 1995. Jointly revised and designated AS/NZS 3499:1997. PUBLISHED JOINTLY BY: STANDARDS AUSTRALIA 1 The Crescent, Homebush NSW
10、 2140 Australia STANDARDS NEW ZEALAND Level 10, Radio New ZealandHouse, 155 The Terrace, Wellington 6001 New Zealand ISBN 0 7337 1471 4 Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 29 Sep 2006 AS/NZS 3499:19972 PREFACE This Standard was prepared by the Joint Standards Australia/Standards New Zealand
11、 Committee WS/1, Water Fittings to supersede AS 34991995. The objective of this revision is to issue it as a Joint Australian/New Zealand Standard and provide manufacturers with the minimum requirements for authorization of metallic and non-metallic flexible tubes for above-ground applications, suit
12、able for hot and cold water supplies. Manufacturers and users of flexible tubes should be aware that only requirements for materials in contact with the water are specified. The selection of flexible tubes for various operating environments is the responsibility of the installer, applying the guidan
13、ce of the manufacturer on the suitability of product for the particular application. The term normative has been used in this Standard to define the application of the appendix to which it applies. A normative appendix is an integral part of a Standard. CopyrightSTANDARDS AUSTRALIA/STANDARDS NEW ZEA
14、LAND Users of Standards are reminded that copyright subsists in all Standards Australia and Standards New Zealand publications and software. Exceptwhere theCopyrightActallowsandexceptwhereprovidedforbelow nopublicationsorsoftwareproducedby Standards Australia or Standards New Zealand may be reproduc
15、ed, stored in a retrieval system in any form or transmitted by any means without prior permission in writing from Standards Australia or Standards New Zealand. Permission may be conditional on an appropriate royalty payment. Australian requests for permission and information on commercial software r
16、oyalties should be directed to the head office of Standards Australia. New Zealand requests should be directed to Standards New Zealand. Up to 10 percent of the technical content pages of a Standard may be copied for use exclusively in-house by purchasers of the Standard without payment of a royalty
17、 or advice to Standards Australia or Standards New Zealand. Inclusion of copyright material in computer software programs is also permitted without royalty payment provided such programs are used exclusively in-house by the creators of the programs. Care should be taken to ensure that material used
18、is from the current edition of the Standard and that it is updated whenever the Standard is amended or revised. The number and date of the Standard should therefore be clearly identified. The use of material in print form or in computer software programs to be used commercially, with or without paym
19、ent, or in commercial contracts is subject to the payment of a royalty. This policy may be varied by Standards Australia or Standards New Zealand at any time. Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 29 Sep 2006 3AS/NZS 3499:1997 CONTENTS Page 1SCOPE . . . . . . . . . . . . . . . . . . . . . . .
20、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2REFERENCED DOCUMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 3DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 4SIZE DESIGNATION . . . . . . . .
21、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 5MATERIALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 6CONTAMINATION OF WATER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 7DESIGN . . . . . . . .
22、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 8PERFORMANCE REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 9MARKING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 APPENDICES
23、 APLASTIC MATERIALS IN CONTACT WITH WATER . . . . . . . . . . . . . . . .7 BWATERTIGHTNESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 CHEAT AGEING TEST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Accessed by UNIVERSITY OF SOUT
24、H AUSTRALIA on 29 Sep 2006 AS/NZS 3499:19974 STANDARDS AUSTRALIA/STANDARDS NEW ZEALAND Australian/New Zealand Standard Flexible tube connectors for water supply 1SCOPEThis Standard specifies requirements for both hot and cold water supplies with a maximum hot water temperature of 80C (allowing excur
25、sions to 95C) using metallic and non-metallic flexible tubes with end connection assemblies for above-ground applications only. Nominal sizes range from DN 2 to DN 50 (inclusive) with a continuous working pressure not exceeding 1.4 MPa and where the normal working temperature does not exceed 95C. Fl
26、exible tubes for cold water applications, capable of withstanding temperatures up to 60C, are included. The construction of flexible tubes is not included. NOTE: This Standard excludes hoses for use with appliances. 2REFERENCED DOCUMENTSThe following documents are referred to in this Standard: AS 13
27、49Bourdon tube pressure and vacuum gauges 1769Welded stainless steel tubes for plumbing applications 2345Dezincification resistance of copper alloys 2738Copper and copper alloysCompositions and designations 2738.2Part 2: Wrought products 2831ThermometersSolid stemLong and shortFor precision use 2837
28、Wrought alloy steelsStainless steel bars and semi-finished products 3558Methods of testing plastics and composite materials sanitary plumbing fixtures 3558.5Part 5: Determination of degradation by ultraviolet light 3707Method for testing pressure cycling resistance of pipes and fittings 3855Suitabil
29、ity of plumbing and water distribution systems products for contact with potable water AS/NZS 1279Copper refinery shapes 3500National Plumbing and Drainage Code 3500.0Part 0: Glossary of terms NZS/BS 1400Copper alloy ingots and copper alloy and high conductivity copper castings 3DEFINITIONSForthepur
30、poseofthisStandard,thedefinitionsgivenin AS/NZS 3500.0 and the following apply. 3.1Componenta part, or a subassembly of parts, that contributes to the construction of a total assembly by choice or design and which may offer variations of fitment for the applicationto themajorelementoftheproduct,whet
31、herproducedbythesame manufacturer or not. The component is deemed a vital part of the total assembly and does not inhibit the product from complying with the relevant Australian Standard, or the appropriate specification, when submitted for type testing. COPYRIGHT Accessed by UNIVERSITY OF SOUTH AUS
32、TRALIA on 29 Sep 2006 5AS/NZS 3499:1997 3.2Flexible tubea tube intended for use between a pipework system and a fixture, fitting, valve, tap or similar, that is capable of being easily moved or bent in any direction withoutdamage.Theflexibletubemayconsistofaninnerlinerandanouter reinforcement braid
33、or sleeve with secured end connectors to ensure watertightness. 4SIZE DESIGNATIONThe size by which a flexible tube is designated shall be related to the size of the bore. The designated size shall be in the range DN 2 to DN 50. 5MATERIALS 5.1GeneralAll materials in contact with water shall comply wi
34、th Clauses 5.2 and 6. 5.2Corrosion-resistant materialsFor the purpose of this Standard, the following materials shall be deemed to be corrosion-resistant: (a)Plastic materials as specified in Clause 5.3. (b)Copper as specified in Clause 5.4. (c)Copper alloy as specified in Clause 5.5. (d)Stainless s
35、teel as specified in Clause 5.6. 5.3Plastic materials 5.3.1GeneralPlastic materials shall be of a type recommended by the polymer manufacturer as suitable and appropriate for use in contact with water. Characteristics to be taken into account shall include compatibility and resistance to variations
36、in water quality and temperature (see Appendix A). NOTE: Manufacturersshould consider the likelihood of acetal componentsbeing directly connected to copper alloys and the potential for breakdown which may exist. Manufacturers should provide installation instructions to prevent such conditions. 5.3.2
37、Acetal copolymerAcetal copolymer, used for structural components that are in contact with the water supply, shall comply with Appendix A. NOTES: 1In view of the time involved in the preconditioning for certain tensile elongation at break tests, certified manufacturers statements of compliance giving
38、 details of the testing body may be acceptable. 2The property of tensile elongation at break has been used as a measure of deterioration of mechanical properties and to evaluate satisfactory grades or blends of acetal copolymer for use in these applications.Specimens are conditioned in ways to simul
39、ate long-term performance under intermittent hot water conditions and then tested. Test results have to reach minimum figures as specified. 5.3.3Ultraviolet resistancePlastic components which are designed to be exposed to direct sunlight when installed shall not crack, craze or exhibit signs of any
40、defect when tested in accordance with AS 3558.5. Following exposure to the UV conditions specified in AS 3558.5, flexible hoses shall pass the watertightness test as required in Clause 8.2. 5.4CopperCopper shall be an alloy designation 122 to AS 2738.2 or AS/NZS 1279 or NZS/BS 1400. 5.5Dezincificati
41、on-resistant copper alloyDezincification-resistant copper alloys shall comply with AS 2345. 5.6Stainless steelStainless steel shall comply with the following: (a)Wrought components: AS 2837, no less than Grade 304. (b)Tubular components: AS 1769, no less than Grade 304. 6CONTAMINATION OF WATERProduc
42、ts and materials in contact with potable water shall comply with AS 3855. COPYRIGHT Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 29 Sep 2006 AS/NZS 3499:19976 7DESIGN 7.1EndconnectorsThedesignconfigurationshallbeatthediscretionofthe manufacturer subject to compliance with the performance requirement
43、s of this Standard. All end connectors shall be capable of making a watertight joint when connected and tightened in accordance with the manufacturers instructions. 7.2Working temperaturesThe working temperature range shall be from 3 2C to (a)60 2C for cold water applications; and (b)95 2C for hot w
44、ater applications. 8PERFORMANCE REQUIREMENTS 8.1GeneralA single flexible hose assembly unit complete with end connections shall pass the performance tests in accordance with this Standard. Each test shall require a separate sample of the same kind unless otherwise specified. 8.2WatertightnessWhen te
45、sted in accordance with Appendix B, the tube and fittings shall show no signs of cracks, leakage or other failure. 8.3Cyclic pressure testWhen tested in accordance with AS 3707, a flexible tube and its end connectors shall withstand no less than 500 000 pressure cycle pulsations without damage at th
46、e working temperature as applicable in Clause 7.2. End connectors shall be attached to the rig at 1.2 times the manufacturers torque requirements. The ratio of pressure rise to pressure fall rates shall be 2:1. The on time (i.e. rise and dwell times) off time (fall and dwell times) ratio shall be 1:
47、1. At the completion of the test, the flexible tube when tested in accordance with Appendix B, shall shown no signs of cracks, leakage, or other failure. 8.4Heat ageing testsWhen tested in accordance with Appendix C, the non-metallic flexible tube assembly shall show no signs of ageing or splitting
48、and shall not leak when hydrostatically tested in accordance with Appendix B after heat ageing. 9MARKINGFlexible tube assemblies shall be legibly marked with the following: (a)Manufacturers name, trademark or licence number. (b)Mark of the certifying body. (c)Tighteningtorquei.e.handormaximumN/m(acc
49、ordingtomanufacturers requirements). (d)Letter H, the word Hot or a durable red indicator (for flexible tubes for hot water applications). NOTE: Manufacturers making a statement of compliance with this Australian/New Zealand Standard on a product, packaging or promotional material related to that product, are advised to ensure that such compliance is capable of being verified. COPYRIGHT Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 29 Sep 2006 7AS/NZS 3499:1997 APPENDIXA PLASTIC MATERIALS IN CONTACT WITH WATER (Normative) A1SCOPEThis Appendix sets out
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