EN 448:2025

This document specifies requirements and test methods for factory made thermally insulated bonded fitting assemblies for hot water networks in accordance with EN 13941-1, comprising a steel service pipe, in most cases a steel fitting, polyurethane (PUR) foam thermal insulation and a casing of polyethylene.The fitting assembly can also include the following additional elements: measuring wires, spacers and diffusion barriers.This document specifies the characteristics of the following fitting assemblies:-bends, T-pieces, and reducers.This document applies to fitting assemblies with a design pressure of at least 1,6 MPa.