The BasicMist and MagnaMist Models all use the Venturi principle for their operation. When air is introduced to a typical unit, like the M-122 MagnaMist at the right, and the “Air Valve” is open, it passes completely through and is released at the “Nozzle Tip”. The air stream forms a “Venturi”, creating suction that draws coolant from a coolant reservoir to the “Coolant Port” where it joins the air to form a mist spray. The force of the spray is easily regulated by adjusting the “Air Valve” to control both air volume and velocity. To adjust the coolant volume one has only to turn the “Nozzle Housing”.