Pipe insulation: Thermal transmittance (NT VVS 077)

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  • Report #: NT VVS 077
  • Approved: February 1990
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This Nordtest method is a laboratory test method for the determination of the thermal performance of pipe insulation. The thermal performance is expressed as a linear thermal transmittance. The apparatus used is a guarded end apparatus.


Nordtest is a trademark of Nordic cooperation in conformity assessment. The emphasis of Nordtest is to develop, promote and innovate Nordic test methods and pre-normative activity. Nordtest endeavours to remove technical barriers to trade and promotes the concept: “Approved once, accepted everywhere”.