AS/NZS 4129:2020 pdf free.Fittings for polyethylene (PE) pipes for pressure applications.
1.7 Threaded end connections on fittings
Threads on fitting ends shall be right-hand Whitworth form and shall conform to AS ISO 7.1, AS 1722.2 or ISO 228-1, as appropriate, and conform to the performance requirements of Section 2.
A female thread shall be designed with consideration of installation torque.
NOTE The manufacturer may provide either —
(a) a permanent metallic ring feature to control creep of the socket; or
(b) a torque test value based on AS 4623 in an installation document provided with the product.
1.8 Fittings intended for connection to other pipe systems
Fittings, such as end connectors intended to connect polyethylene pipe systems to pipe systems made from other materials (e.g. copper), shall conform to the relevant dimensional and performance requirements of the appropriate Australian, New Zealand or joint Australian/New Zealand Standard for the other pipe system. With the exception of pressure testing, where there is a variation in criteria between that Standard and this Standard, the more stringent criteria shall apply.
1.9 Flanged ends on fittings
Flanges, which are required to connect to existing systems or for specific applications, shall be constructed such that they can be attached to flanges conforming to AS/NZS 4331 (series), AS 2129, AS/NZS 4087, AS ISO 9624, ASME/ANSI B16.5, ASME/ANSI B16.47 or other equivalent International Standards, and conform to the performance requirements of Section 2.
Flanges shall be perpendicular to and concentric with the longitudinal axis of the fitting.
1.10 Freedom from defects
1.10.1 General
The defects described in this Clause cannot be completely quantified. Where the presence, size or frequency of any defect is considered to be of concern, arrangements should be made between the purchaser/water or gas authority/certifying body, as appropriate, and the manufacturer. This may be achieved by the provision of acceptable type samples or methods of test.
Where the presence, size or frequency of any imperfection is considered to be of concern, the manufacturer may be required to demonstrate fitness for purpose of the products.
1.10.2 Requirements
1.10.2.1 General requirements
The fitting shall be clean, smooth and free from burrs, fins, irregularities and sharp edges that could affect the performance or function of the fitting in service and the safe handling of the fitting during installation and use. There shall be no imperfections that will score the pipe or cause damage to other fittings.
The bore of fittings shall be free from irregularities that may restrict the free flow of fluids except in the case of fabricated fittings where internal weld beads are accepted.
1.10.2.2 Requirements specific to plastics materials
The surfaces of plastics components shall be free from grooves, pinholes, blisters, heat marks and other imperfections that could affect the performance or function of the fitting in service.AS/NZS 4129 pdf download.