BS EN 15698-2:2015

European foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
5 Test methods
6 Marking
Annex A (normative) - Waste treatment and recycling
Annex B (informative) - Examples of twin pipe fitting
        assemblies

Defines requirements and test methods for fittings of prefabricated thermally insulated twin pipe assemblies comprising steel service fittings and/or valves from DN 15 to DN 250, rigid polyurethane foam insulation and an outer casing of polyethylene for use in directly buried hot water networks with preinsulated twin pipe assemblies in accordance with EN 15698-1:2009.

This European Standard specifies requirements and test methods for fittings of prefabricated thermally insulated twin pipe assemblies comprising steel service fittings and/or valves from DN 15 to DN 250, rigid polyurethane foam insulation and an outer casing of polyethylene for use in directly buried hot water networks with preinsulated twin pipe assemblies in accordance with EN15698‑1:2009 . This European Standard covers the following: fitting assemblies, such as T-pieces, reducers and anchors; valve assemblies. This European Standard applies only to insulated fitting assemblies for continuous operation with hot water at various temperatures in accordance with the scope EN15698‑1:2009 . This European Standard applies to fitting and valve assemblies with a minimum design pressure of 16bar (overpressure) complying with EN13941 . Guidelines for quality inspection and testing of fitting assemblies are given in EN448:2015, AnnexA and EN15698‑1:2009, AnnexA. Guidelines for quality inspection and testing of valve assemblies are given in EN488:2015, AnnexA and EN15698‑1:2009, AnnexA. Procedures for PE-welding are given in EN448:2015, AnnexB. NOTE This European Standard does not include rules for calculation of loads and stresses.