AS/NZS 4998:2009

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.

First published as AS/NZS 4998:2009.