What is ISO 4427-3 - Polyethylene (PE) fittings about?
The ISO 4427 series of standards are a set of system standards that specify the requirements for a piping system and its components when made from PE.
ISO 4427-3 is the third part in the multi-series that is applicable to the plastics piping systems for water supply and for drainage and sewerage under pressure. It details best practices for ensuring safe, reliable, and high-performance plastic piping systems.
ISO 4427-3 specifies the fittings made from polyethylene (PE) for buried or above ground