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This Document Has Been Superseded
A newer publication replaces it: BSI BS EN 488-1
District heating pipes. Bonded single pipe systems for directly buried hot water networks. Factory made steel valve assembly for steel service pipes, polyurethane thermal insulation and a casing of polyethylene
This document specifies requirements and test methods for factory made **thermally insulated bonded valve assemblies** for hot water networks in accordance with EN 13941?1, comprising a steel valve, rigid polyurethane foam thermal insulation and a casing of polyethylene.
The valve assembly could also include the following additional elements:
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