Thermostatic mixing valves: Proportional band (NT VVS 60)

  • Report #: NT VVS 060
  • Approved: November 1987
Download pdf Size: 34.92 KB


  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.