ISO/TC 138/SC 2/WG 4 - PE piping systems for water supply

This document specifies the general aspects of polyethylene (PE) compounds for the manufacture of pressure pipes and fittings (mains and service pipes) 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; — water for other purposes. This document also specifies the test parameters and requirements for the test methods referred to in this document. In conjunction with other parts of the ISO 4427 series, this document is applicable to PE pipes and fittings, their joints and to joints with components made of PE and other materials, intended to be used under the following conditions: a) a maximum allowable operating pressure (PFA) up to and including 25 bar[1]; b) an operating temperature of 20 °C as the reference temperature. NOTE 1 For other operating temperatures, guidance is given in Annex A. The ISO 4427 series covers a range of maximum allowable operating pressures and gives requirements concerning colours. NOTE 2 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. [1] 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2.

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 bar[1]; 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.

This document specifies the characteristics of the fitness for purpose of pipes and/or fittings assemblies 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 pipes suspended below bridges. NOTE 2 This document is intended to be only used by the product manufacturer to assess the performance of components according to ISO 4427‑2 and/or ISO 4427‑3 when joined together under normal and extreme conditions. It is not intended for on-site testing of pipe systems. 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 pipes, fittings, their joints and to joints with components of PE and other materials, intended to be used under the following conditions: a) a maximum allowable operating pressure (PFA) up to and including 25 bar[1]; b) an operating temperature of 20 °C as the reference temperature. NOTE 3 For other operating temperatures, guidance is given in ISO 4427‑1: 2019, Annex A. The ISO 4427 series covers a range of maximum allowable operating pressures and gives requirements concerning colours. [1] 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2.

This document specifies the pipes 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; — water for other purposes. NOTE 1 The intended uses include sea outfalls, laid in water and pipes suspended below bridges. Pipes complying with this document are not intended for the transport of water intended for human consumption in contaminated soils unless special consideration has been taken. NOTE 2 For example, ISO 21004 provides an alternative solution for use in contaminated soils. See Reference [3] in the Bibliography. This document specifies three types of pipe: — PE pipes (outside diameter dn), including any identification stripes; — PE pipes with co-extruded layers on either or both the outside and/or inside of the pipe (total outside diameter dn) where all layers have the same MRS rating; — PE pipes (outside diameter dn) having a peelable and contiguous thermoplastics additional layer on the outside of the pipe ("coated pipe"). 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 pipes, their joints and to joints with components made of PE and other materials, intended to be used under the following conditions: a) a maximum allowable operating pressure (PFA) up to and including 25 bar[1]; b) an operating temperature of 20 °C as the reference temperature. NOTE 3 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 4 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. [1] 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2.

This document specifies the mating dimensions for thermoplastic flange adapters and corresponding loose backing flanges intended to be used in thermoplastic piping systems for the conveyance of fluids under pressure. It applies to flange adapters and loose backing flanges for use with pipes with nominal outside diameters (dn) from 16 mm to 2 500 mm and nominal pressures up to 25 bar[1] (PN 25). This document specifies the dimensions of the flange adapters intended to be used for: — butt fusion piping systems; — socket fusion piping systems; — adhesive jointed piping systems. NOTE 1 For specific connections with dimensions (e.g. dn450 or dn630) not covered in this document, or specific equipment (butterfly valves), specific solutions are available on the market. This document is applicable to loose backing flanges made from metal, thermoplastics, or a combination of metal and thermoplastics. This document also provides information on gaskets and gives general recommendations on correct assembling practices. NOTE 2 Industrial applications are not covered by this document. Products intended for industrial application are covered by ISO 15493[1], ISO 15494 or ISO 10931[2]. [1] 1 bar = 0,1 MPa = 105 N/m2.

ISO 4427-1:2007 specifies the general aspects of polyethylene (PE) piping systems (mains and service pipes) intended for the conveyance of water for human consumption, including raw water prior to treatment and water for general purposes. It also specifies the test parameters for the test methods to which it refers. In conjunction with the other parts of ISO 4427, it is applicable to PE pipes, fittings, their joints and to mechanical joints with components of other materials, intended to be used under the following conditions: a maximum operating pressure (MOP) up to and including 25 bar; an operating temperature of 20 °C as the reference temperature.

ISO 4427-2:2007 specifies the pipes made from polyethylene (PE) intended for the conveyance of water for human consumption, including raw water prior to treatment and water for general purposes. It also specifies the test parameters for the test methods to which it refers. In conjunction with the other parts of ISO 4427, it is applicable to PE pipes, their joints, to joints with components of PE and to mechanical joints with components of other materials, intended to be used under the following conditions: a maximum operating pressure (MOP) up to and including 25 bar; an operating temperature of 20 °C as the reference temperature.

ISO 4427-3:2007 specifies the general aspects of fittings made from polyethylene (PE) for piping systems intended for the conveyance of water for human consumption, including raw water prior to treatment and water for general purposes. It also specifies the test parameters for the test methods to which it refers. In conjunction with the other parts of ISO 4427, it is applicable to PE fittings, their joints, to joints with components of PE and to joints with mechanical fittings of other materials, intended to be used under the following conditions: a maximum operating pressure (MOP) up to and including 25 bar; an operating temperature of 20 °C as the reference temperature.

ISO 4427-5:2007 specifies the characteristics of the fitness for purpose of assembled piping systems made from polyethylene (PE) intended for the conveyance of water for human consumption, including raw water prior to treatment and water for general purposes. It also specifies the test parameters for the test methods to which it refers. In conjunction with the other parts of ISO 4427, it is applicable to PE pipes, fittings, valves, their joints and to joints with components of other materials, intended to be used under the following conditions: a maximum operating pressure (MOP) up to and including 25 bar; an operating temperature of 20 °C as the reference temperature.

Specifies the required properties of pipes made from polyethylene (PE) to be used for buried water mains and services and for water supply above ground both inside and outside buildings. In addition, it contains specifications for some general properties of the material from which these pipes are made, including a classification scheme.