ISO 4427-3:2019
Plastics piping systems — Polyethylene (PE) pipes and fittings for water supply — Part 3: Fittings

Standard No.

ISO 4427-3:2019

Release Date

2019

Published By

International Organization for Standardization (ISO)

Latest

ISO 4427-3:2019

Scope

This document specifies the fittings made from polyethylene (PE) for buried or above ground applications, intended for the conveyance of water for human consumption, raw water prior to treatment, drainage and sewerage under pressure, vacuum sewer systems, and water for other purposes. NOTE 1 The intended uses include sea outfalls, laid in water and connection between pipes suspended below bridges. This document also specifies the test parameters for the test methods referred to in this document. In conjunction with the other parts of the ISO 4427 series, this document is applicable to PE fittings, to joints with components of PE or other materials, intended to be used under the following conditions: a) a maximum allowable operating pressure (PFA) up to and including 25 bar1); b) an operating temperature of 20 °C as the reference temperature. NOTE 2 For other operating temperatures, guidance is given in ISO 4427-1:2019, Annex A. This document covers a range of maximum allowable operating pressures and gives requirements concerning colours. NOTE 3 It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and installation practices or codes. This document is applicable to fittings of the following types: 1. fusion fittings; a. electrofusion fittings; b. spigot end fittings (for butt fusion using heated tools and electrofusion socket fusion); c. socket fusion fittings (see Annex A); 2. mechanical fittings; a. compression fittings; b. flanged fittings; 3. fabricated fittings (see Annex B). 1) 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2. 

ISO 4427-3:2019 Referenced Document

• EN 681-1:1996 Elastomeric Seals - Material Requirements for Pipe Joint Seals Used in Water and Drainage Applications - Part 1: Vulcanized Rubber (Incorporates Amendment A1: 1998)
• ISO 1133-1 Plastics — Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics — Part 1: Standard method*， 2022-06-23 Update
• ISO 11357-6 Plastics - Differential scanning calorimetry (DSC) - Part 6: Determination of oxidation induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT)
• ISO 1167-1:2006 Thermoplastics pipes, fittings and assemblies for the conveyance of fluids - Determination of the resistance to internal pressure - Part 1: General method
• ISO 1167-3 Thermoplastics pipes, fittings and assemblies for the conveyance of fluids - Determination of the resistance to internal pressure - Part 3: Preparation of components
• ISO 1167-4 Thermoplastics pipes, fittings and assemblies for the conveyance of fluids - Determination of the resistance to internal pressure - Part 4: Preparation of assemblies
• ISO 12176-1 Plastics pipes and fittings — Equipment for fusion jointing polyethylene systems — Part 1: Butt fusion
• ISO 13951 Plastics piping systems - Test method for the resistance of plastic pipe/pipe or pipe/fitting assemblies to tensile loading
• ISO 13953 Polyethylene (PE) pipes and fittings — Determination of the tensile strength and failure mode of test pieces from a butt-fused joint — Amendment 1*， 2020-04-20 Update
• ISO 13954 Plastics pipes and fittings — Peel decohesion test for polyethylene (PE) electrofusion assemblies of nominal outside diameter greater than or equal to 90 mm — Amendment 1*， 2020-04-20 Update
• ISO 13955 Plastics pipes and fittings — Crushing decohesion test for polyethylene (PE) electrofusion assemblies — Amendment 1*， 2020-04-20 Update
• ISO 13956 Plastics pipes and fittings - Decohesion test of polyethylene (PE) saddle fusion joints - Evaluation of ductility of fusion joint interface by tear test
• ISO 13957 Plastics pipes and fittings - Polyethylene (PE) tapping tees - Test method for impact resistance
• ISO 17885 Plastics piping systems - Mechanical fittings for pressure piping systems - Specifications*， 2021-05-31 Update
• ISO 228-1 Pipe threads where pressure-tight joints are not made on the threads - Part 1: Dimensions, tolerances and designation
• ISO 3126 Plastics piping systems - Plastics components - Determination of dimensions
• ISO 4427-1 Plastics piping systems — Polyethylene (PE) pipes and fittings for water supply — Part 1: General
• ISO 4427-2 Plastics piping systems for water supply, and for drainage and sewerage under pressure — Polyethylene (PE) — Part 2: Pipes — Amendment 1*， 2023-02-20 Update
• ISO 4427-5 Plastics piping systems — Polyethylene (PE) pipes and fittings for water supply — Part 5: Fitness for purpose of the system
• ISO 4433-1 Thermoplastics pipes - Resistance to liquid chemicals - Classification - Part 1: Immersion test method
• ISO 4433-2 Thermoplastics pipes - Resistance to liquid chemicals - Classification - Part 2: Polyolefin pipes
• ISO 7-1 Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions, tolerances and designation TECHNICAL CORRIGENDUM 1
• ISO 9624 Thermoplastics piping systems for fluids under pressure — Flange adapters and loose backing flanges — Mating dimensions — Amendment 1*， 2021-09-29 Update

ISO 4427-3:2019 history

• 2019 ISO 4427-3:2019 Plastics piping systems — Polyethylene (PE) pipes and fittings for water supply — Part 3: Fittings
• 2007 ISO 4427-3:2007 Plastics piping systems - Polyethylene (PE) pipes and fittings for water supply - Part 3: Fittings