Thermostatic mixing valves: Proportional band (NT VVS 60)

Size: 34.92 KB
  • Report #: NT VVS 060
  • Approved: November 1987
  • Hits: 0


The test proposed below specifies a method which permits the measurement of the proportional band. Proportional band denotes the temperature difference which causes the valve of the thermostatic mixing valve to move from totally closed position to totally opened position or vice versa.


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”.