Standard
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AS/NZS 4129:2020
[Current]Fittings for polyethylene (PE) pipes for pressure applications
This Standard specifies requirements for fittings to be used with polyethylene pipe manufactured in accordance with AS/NZS 4130 or AS 2698.2 or POP 009. This Standard is applicable to fittings manufactured for the conveyance of water, fuel gas, and other fluids including compressed air.
Published: 21/02/2020
Pages: 52
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Normative references
1.3 Terms and definitions
1.3.1 General definitions
1.3.2 Geometrical definitions
1.3.3 Material definitions
1.3.4 Definitions relating to service conditions
1.3.5 Definitions specific to the design of electrofusion fittings
1.3.6 Definitions specific to flanges
1.4 Notation
1.5 Classification
1.6 Size specification
1.6.1 General
1.6.2 Straight-through fittings
1.6.3 Fittings having three ends
1.6.4 Fittings having four ends
1.7 Threaded end connections on fittings
1.8 Fittings intended for connection to other pipe systems
1.9 Flanged ends on fittings
1.10 Freedom from defects
1.10.1 General
1.10.2 Requirements
1.10.2.1 General requirements
1.10.2.2 Requirements specific to plastics materials
1.10.2.3 Requirements specific to metallic materials
1.11 Effect on water
1.12 Requirements specific to plastics materials
1.12.1 Plastics-moulded material test
1.12.2 Plastics body fittings test
1.12.3 Opacity test
1.12.4 Chemical resistance for fuel gas applications
1.13 Requirements specific to metallic materials
1.13.1 Metallic materials
1.13.1.1 General
1.13.1.2 Ductile iron
1.13.1.3 Corrosion-resistant metallic materials
1.13.1.4 Protection against corrosion of other metallic materials
1.13.2 Metal fittings body test
1.13.3 Dezincification resistance
1.14 Marking requirements
1.15 Packaging
1.16 Transition fittings
2 Mechanical compression joint fittings
2.1 Scope of section
2.2 Composition — Reprocessable material
2.3 Other requirements
2.4 Performance requirements for assembled joints
2.4.1 General
2.4.2 Leak tightness under internal pressure
2.4.3 Long term pressure test for leak tightness under internal pressure
2.4.4 Resistance to pull out
2.4.5 Leak tightness under internal pressure when subjected to bending
2.4.6 Leak-tightness under negative pressure
2.4.7 Stress corrosion test (copper alloy fittings)
3 Electrofusion fittings
3.1 Scope of section
3.2 Composition
3.2.1 General
3.2.2 Reprocessable material
3.2.3 Characteristics of the PE compound
3.2.4 Classification
3.2.5 Other materials
3.3 General requirements
3.3.1 Multiple connections
3.3.2 Appearance of the fitting
3.3.3 Design
3.3.4 Electrical characteristics (electrofusion fittings)
3.4 Geometrical characteristics
3.4.1 General
3.4.2 Electrofusion socket fittings
3.5 Mechanical characteristics
3.6 Marking requirements
3.7 Traceabilty data
4 Mechanical tapping saddles
4.1 Scope of section
4.2 Composition
4.2.1 General
4.2.2 Reprocessable material
4.3 Performance requirements
4.3.1 General
4.3.2 Liquid infiltration
4.3.3 Leak resistance under pressure when subjected to bending
4.3.4 Hydrostatic pressure test for assembled saddle
4.3.5 Resistance to pressure during application of a bending moment to the branch outlet
4.3.6 Resistance to sliding of the saddle on the pipe
4.3.7 Assembly test
5 Post-formed bends
5.1 General
5.2 Spigot ends
5.3 Dimensions
5.4 Marking
6 Spigot fittings for butt fusion and socket fusion using heated tools and for use with electrofusion fittings
6.1 Scope of section
6.2 Notation
6.3 Composition
6.3.1 General
6.3.2 Characteristics of the PE compound
6.3.3 Classification
6.4 General requirements
6.5 Geometrical characteristics
6.5.1 General
6.5.2 Spigot dimensions
6.6 Wall thickness
6.7 Other dimensions
6.8 Mechanical characteristics
6.9 Physical characteristics
6.10 Marking requirements
7 Flanges
7.1 Scope
7.2 Composition
7.2.1 General
7.2.2 Reprocessable material
7.2.3 Characteristics of the polyethylene compound
7.2.4 Classification
7.3 General requirements
7.4 Geometrical characteristics
7.4.1 Parallelism of bearing and contact surfaces
7.4.2 Back-facing
7.4.3 Flange face thickness
7.4.4 Loose metallic backing rings
7.4.5 Dimensions
7.4.6 Tolerances
7.5 Mechanical characteristics
7.5.1 General
7.5.2 Flange compression
7.6 Physical characteristics
7.6.1 Imperfections
7.6.2 Flange contact surface finishes
7.7 Marking
7.7.1 Flange adaptors
7.7.2 Full face flanges
8 Fabricated fittings
8.1 Scope of section
8.2 Materials
8.3 Pressure ratings
8.4 Dimensions
8.5 Testing
8.6 Product branding
Appendix A
A.1 Scope
A.2 Relevance
A.3 Terms and definitions
A.4 Minimum sampling and testing frequency plan
A.4.1 General
A.4.2 Testing
A.4.3 Retesting
A.4.4 Rejection after retest
Appendix B
B.1 Scope
B.2 Apparatus and reagents
B.2.1 Apparatus
B.2.2 Reagents
B.3 Preparation of test specimens
B.4 Number of test specimens
B.5 Condition of test specimens and reagents
B.6 Procedure
B.7 Report
Appendix C
C.1 I-Regulation
C.2 U-Regulation
C.3 Maximum value of the penetration depth
C.4 Minimum length of the fusion zone
C.5 Minimum unheated entrance length
C.6 Minimum bore
C.7 Results
Appendix D
D.1 Scope
D.2 Principle
D.3 Apparatus
D.4 Test piece
D.5 Procedure
D.6 Test report
Appendix E
E.1 Scope
E.2 Principle
E.3 Apparatus
E.4 Test piece
E.5 Procedure
E.6 Test report
Appendix F
F.1 Mean outside diameter
F.2 Out-of-roundness
F.3 Minimum bore (D2)
F.4 Cut-back length (L1)
F.5 Length of tubular part (L2)
Appendix G
G.1 Scope
G.2 Dimensions
Bibliography
Cited references in this standard
[Current]
General requirements for the competence of testing and calibration laboratories
[Current]
Pipe threads where pressure-tight joints are not made on the threads - Part 1: Dimensions, tolerances and designation
[Current]
Plastics - Symbols and abbreviated terms - Part 1: Basic polymers and their special characteristics
[Current]
Plastics - Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics - Part 1: Standard method
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