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AS/NZS 4998:2009

Current
Current

The latest, up-to-date edition.

Bolted unrestrained mechanical couplings for waterworks purposes (Reconfirmed 2022)
Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English

Published date

03-31-2009

Preview

1 - AS/NZS 4998:2009 BOLTED UNRESTRAINED MECHANICAL COUPLINGS FOR WATERWORKS PURPOSES
4 - PREFACE
5 - CONTENTS
6 - SECTION 1 SCOPE AND GENERAL
6 - 1.1 SCOPE
6 - 1.2 REFERENCED DOCUMENTS
8 - 1.3 DEFINITIONS
8 - 1.3.1 Allowable operating pressure (AOP)
8 - 1.3.2 Allowable site test pressure (ASTP)
8 - 1.3.3 Coating
8 - 1.3.4 Coating defect
8 - 1.3.5 Maximum allowable operating pressure (MAOP)
8 - 1.3.6 Mechanical coupling-Unrestrained
8 - 1.3.7 Mechanical coupling-Unrestrained flanged adaptor
8 - 1.3.8 Nominal pipe setting gap
8 - 1.3.9 Nominal size (DN)
8 - 1.3.10 Pressure classification (PN)
8 - 1.3.11 Reach
8 - 1.4 DESIGNATION OF SIZE
9 - 1.5 CLASSIFICATION
9 - 1.6 ALLOWABLE PRESSURES
10 - SECTION 2 MATERIALS
10 - 2.1 MATERIAL REQUIREMENTS
10 - 2.2 DEZINCIFICATION-RESISTANT COPPER ALLOYS
10 - 2.3 POLYMERIC SYSTEMS
10 - 2.3.1 General
10 - 2.3.2 Polymeric coatings
10 - 2.4 ELASTOMERIC SEALS
10 - 2.5 EFFECT ON WATER
12 - SECTION 3 DESIGN, MANUFACTURE AND OPERATIONAL LIMITATIONS
12 - 3.1 DESIGN
12 - 3.2 DIMENSIONS
12 - 3.3 FREEDOM FROM DEFECTS
12 - 3.4 NOMINAL JOINT DEFLECTION
12 - 3.5 NOMINAL PIPE SETTING GAP
13 - 3.6 COMPONENT JOINTING
13 - 3.6.1 Leaktightness
13 - 3.6.2 Fasteners
14 - 3.7 WELDING
14 - 3.7.1 Carbon steel
14 - 3.7.2 Stainless steel
15 - SECTION 4 TESTING
15 - 4.1 TYPE TESTS
15 - 4.1.1 General
15 - 4.1.2 Hydrostatic leaktightness test
16 - 4.1.3 Joint infiltration test
16 - 4.1.4 Assembly test
16 - 4.2 POLYMERIC COATING TESTS
17 - SECTION 5 MARKING AND PACKAGING
17 - 5.1 MARKING
17 - 5.2 PACKAGING
17 - 5.3 INSTALLATION INSTRUCTIONS
18 - APPENDIX A - COMPLIANCE REQUIREMENTS
18 - A1 SCOPE
18 - A2 PRODUCT CERTIFICATION
18 - A3 MINIMUM SAMPLING AND TESTING FREQUENCY PLAN
18 - A3.1 General
18 - A3.2 Retesting
19 - A3.3 Rejection after retest
19 - A4 DEFINITIONS
19 - A4.1 Coupling batch
19 - A4.2 Material batch
19 - A4.3 Lot
19 - A4.4 Sample
19 - A4.5 Sampling plan
19 - A4.6 Batch release test (BRT)
19 - A4.7 Type test (TT)
22 - APPENDIX B - TYPICAL COUPLING CONFIGURATIONS

Specifies requirements for unrestrained mechanical couplings for waterworks purposes.

This Standard specifies requirements for unrestrained mechanical couplings for joining above or below ground water mains and wastewater mains, other than polyethylene (PE) piping, with pressure classifications of PN 16 and PN 35 and nominal sizes DN 80 to DN 750 and for a maximum working temperature of 40ºC.Means for demonstrating compliance with this Standard are given in Appendix A.NOTES:1 Requirements for couplings for use with polyethylene piping are specified in AS/NZS 4129.2 Typical coupling arrangements are shown in Appendix B.

Committee
WS-016
DocumentType
Standard
ISBN
0 7337 9061 5
Pages
19
ProductNote
Pending Revision indicates that as a result of the Aged Standards review process, the document needs updating. If no project proposal, meeting the quality criteria, is received within the 12 month timeframe, the document shall be withdrawn.
PublisherName
Standards Australia
Status
Current
Supersedes

First published as AS/NZS 4998:2009.

AS 2205.10.1-2003 Methods for destructive testing of welds in metal Corrosion test for welded austenitic stainless steel
AS/NZS 4129:2008 Fittings for polyethylene (PE) pipes for pressure applications
AS 2074-2003 Cast steels
AS 1112.3-2000 ISO metric hexagon nuts - Product grade C
AS/NZS 4020:2005 Testing of products for use in contact with drinking water
AS/NZS 4680:2006 Hot-dip galvanized (zinc) coatings on fabricated ferrous articles (Reconfirmed 2017)
AS 4087-2004 Metallic flanges for waterworks purposes
AS/NZS 3518:2004 Acrylonitrile butadiene styrene (ABS) compounds, pipes and fittings for pressure applications
AS 1646-2007 Elastomeric seals for waterworks purposes (Reconfirmed 2018)
AS/NZS 4158:2003 Thermal-bonded polymeric coatings on valves and fittings for water industry purposes
AS/NZS 1554.6:1994 Structural steel welding - Welding stainless steels for structural purposes
AS 1111.1-2000 ISO metric hexagon bolts and screws - Product grade C - Bolts
AS 1214-1983 Hot-dip galvanized coatings on threaded fasteners (ISO metric coarse thread series)
AS/NZS 1390:1997 Cup head bolts with ISO metric coarse pitch threads (Reconfirmed 2016)
AS 1110.1-2000 ISO metric hexagon bolts and screws - Product grades A and B - Bolts
AS 1565-1996 Copper and copper alloys - Ingots and castings (Reconfirmed 2020)
AS 4041-2006 Pressure piping (Reconfirmed 2016)
AS/NZS 1594:2002 Hot-rolled steel flat products (Reconfirmed 2016)
HB 18.28-2005 Conformity assessment - Guidance on a third-party certification system for products
AS 2345-2006 Dezincification resistance of copper alloys
AS/NZS 4291.2:1995 Mechanical properties of fasteners Nuts with specified proof load values - Coarse thread
AS 1831-2007 Ductile cast iron (Reconfirmed 2017)
AS 1112.1-2000 ISO metric hexagon nuts Style 1 - Product grades A and B
AS 1199.1-2003 Sampling procedures for inspection by attributes Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection (Reconfirmed 2016)
AS 4291.1-2000 Mechanical properties of fasteners made of carbon steel and alloy steel - Bolts, screws and studs

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