What is ISO 1452-3 – PVC-U fittings for plastic piping systems about? 
ISO 1452 is an International Standard that discusses plastics piping systems for water supply and for buried and above-ground drainage and sewerage under pressure. The main objective of the ISO 1452 series is to ensure plastic piping and their components contribute to the operational efficiency of the overall external water conveyance system.
ISO 1452-3 is the third part of the ISO 1452 series that specifies the characteristics of fittings made from unplasticized poly (vinyl chloride) (PVC-U) for piping systems intended for water supply and for buried and above-ground drainage and sewerage under pressure.
ISO 1452-3 also specifies the test parameters for the test methods referred to in ISO 1452-3.
In conjunction with ISO 14521, ISO 14522 and ISO 14525; ISO 1452-3 is applicable to PVC-U fittings and to joints with components of PVC-U, other plastics and non-plastics materials intended to be used for the following:
- Water mains and services buried in the ground
- Conveyance of water above ground for both outside and inside buildings
- Buried and above-ground drainage and sewerage under pressure
ISO 1452-3 is applicable to fittings in piping systems intended for the supply of water under pressure up to and including 25 °C (cold water), intended for human consumption and for general purposes as well as for waste water under pressure.
ISO 1452-3 is also applicable to components for the conveyance of water and waste water up to and including 45 °C. For temperatures between 25 °C and 45 °C, Figure A.1 of ISO 14522:2009 applies.
ISO 1452-3 is also applicable to PVC-U flange adapters and to the corresponding flanges made from various materials. ISO 1452-3 covers a range of fitting sizes and pressure classes and gives requirements concerning colours.
Who is ISO 1452-3 - PVC-U fittings for plastic piping systems for? 
ISO 1452-3 on PVC-U fittings is useful for: 
- Manufacturers and suppliers of PVC-U
- Manufacturers and suppliers of PVC-U fittings
- Product design engineers
- Quality control teams
- Contractors
- Civil engineers
- Specifiers and installers
- Local bodies
Why should you use ISO 1452-3 - PVC-U fittings for plastic piping systems ?
PVC-U plastics are a flexible, lightweight and corrosion-resistant piping product. These qualities make them an ideal option for a broad variety of applications such as potable water service or distribution lines, natural gas distribution, lawn sprinklers, sewers, waste disposal, and drainage lines.
ISO 1452-3 provides guidelines for the fitting of the PVC-U piping system. Depending on the jointing method, ISO 1452-3 is applicable to the following types of fittings:
- Fittings for solvent cementing
- Elastomeric ring seal fittings
ISO 1452-3 covers a range of fitting sizes and pressure classes and gives requirements concerning colours.
ISO 1452-3 also provides best industry guidance on materials, along with the required geometrical, mechanical and physical characteristics for PVC-U fittings.
By selecting the right materials and adopting ISO 1452-3-compliant recommendations for PVC-U fittings, you can ensure that product failure is avoided and the overall structural and operational integrity of the external water conveyance systems is maintained.
