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Standards Development
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 foam thermal insulation and a casing of polyethylene.
The fitting assembly may also include the following additional elements: measuring wires, spacers and diffusion barriers.
This document covers the following fitting assemblies: bend, tee and reducer.
This document applies to fitting assemblies with a minimum design pressure of 1,6 MPa.
The standard is
- aligned with the structure of EN 253;
- harmonized with the standards of CEN/TC107;
o welding qualifications, requirements and tests are aligned with EN 13941-1;
o single use compensators and caps are omitted; these are dealt with in EN 13941-1.
- adapted to the state of the art;
o anchors are omitted;
o requirements for hot-formed bends are to be agreed between purchaser and supplier;
o recommendations for the qualification of PE welders are added;
o requirements for visual inspection of PE welded joints are updated and illustrated with figures;
o requirements for marking of fitting assemblies have been added.
Note: in case the WI is based on documents from other organizations than ISO/IEC, please specify it here
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