The Caleffi MixCal™ Thermostatic Mixing Valve has a simple lock mechanism under the setpoint adjustment knob that can help prevent unauthorized "tinkering" of the mixed water temperature setting. It's easy to set; take a look at this quick video featuring our training manager Bob "Hot Rod" Rohr.
![MixCal™ Thermostatic Mixing Valve Adjustment Lock](/sites/default/files/styles/scale_1_pixel/public/blog/mixcal_thermostatic_mixing_valve_adjustment_lock-drupal.jpg.webp?itok=X5-fg-YR)
January 21, 2015
MixCal™ Thermostatic Mixing Valve Adjustment Lock
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