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  • AS/NZS 4998:2009

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    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:  31-03-2009

    Publisher:  Standards Australia

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    Table of Contents - (Show below) - (Hide below)

    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

    Abstract - (Show below) - (Hide below)

    Specifies requirements for unrestrained mechanical couplings for waterworks purposes.

    Scope - (Show below) - (Hide below)

    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.

    General Product Information - (Show below) - (Hide below)

    Committee WS-016
    Document Type Standard
    Product Note 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.
    Publisher Standards Australia
    Status Current
    Supersedes

    History - (Show below) - (Hide below)

    First published as AS/NZS 4998:2009.

    Standards Referenced By This Book - (Show below) - (Hide below)

    AS/NZS 4158:2003 Thermal-bonded polymeric coatings on valves and fittings for water industry purposes
    HB 18.28-2005 Conformity assessment - Guidance on a third-party certification system for products
    AS/NZS 1594:2002 Hot-rolled steel flat products
    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 1199.1-2003 Sampling procedures for inspection by attributes Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
    AS 2345-2006 Dezincification resistance of copper alloys
    AS 4087-2004 Metallic flanges for waterworks purposes
    AS/NZS 4291.2:1995 Mechanical properties of fasteners Nuts with specified proof load values - Coarse thread
    AS 1831-2007 Ductile cast iron
    AS 2074-2003 Cast steels
    AS 1112.1-2000 ISO metric hexagon nuts - Style 1 - Product grades A and B
    AS 1214-1983 Hot-dip galvanized coatings on threaded fasteners (ISO metric coarse thread series)
    AS 1112.3-2000 ISO metric hexagon nuts - Product grade C
    AS/NZS 1390:1997 Cup head bolts with ISO metric coarse pitch threads (Reconfirmed 2016)
    AS/NZS 4020:2005 Testing of products for use in contact with drinking water
    AS 1110.1-2000 ISO metric hexagon bolts and screws - Product grades A and B - Bolts
    AS/NZS 3518:2004 Acrylonitrile butadiene styrene (ABS) compounds, pipes and fittings for pressure applications
    AS 1565-1996 Copper and copper alloys - Ingots and castings (Reconfirmed 2020)
    AS 1646-2007 Elastomeric seals for waterworks purposes (Reconfirmed 2018)
    AS/NZS 4680:2006 Hot-dip galvanized (zinc) coatings on fabricated ferrous articles (Reconfirmed 2017)
    AS 4291.1-2000 Mechanical properties of fasteners made of carbon steel and alloy steel - Bolts, screws and studs
    AS 4041-2006 Pressure piping
    NZS 4404:2010 LAND DEVELOPMENT AND SUBDIVISION INFRASTRUCTURE
    AS/NZS 4129:2008 Fittings for polyethylene (PE) pipes for pressure applications
    AS 2205.10.1-2003 Methods for destructive testing of welds in metal Corrosion test for welded austenitic stainless steel
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