Proportional Mixers from  Coolant Consultants, Inc.

Save labor by mixing faster than by hand

Automatic models save even more by keeping containers full unattended

More accurate than hand mixing

Safer because less contact with concentrates

Lean coolant mixtures can cause excessive tool wear, corrosion on parts and machines, and increased bacteria growth

Rich coolant mixtures can cause sticky or slippery residues, operator irritation, and waste expensive concentrate

Lean cleaner mixtures won't perform as intended

Venturi types use water passing over an orifice to create suction that draws the concentrate from the container and mixes it with the water.  Concentration is controlled by either changing orifice size or turning a metering valve.  These units can not operate with any back pressure, so they can only be used to fill a pail or nearby container.  Accuracy is also affected by water pressure and concentrate level.

Link to Venturi Proportional Mixers

Water Driven Pumps use water to drive a piston which pumps concentrate into a mixing chamber where it is mixed with the water.  Concentration is not affected by water pressure or concentrate level, which makes them very accurate.  These units can be hooked up in-line or to a hose reel and are typically used in central distribution systems.

Link to Water Driven Proportioning Pumps

Note  Plumbing codes in some areas may require a backflow preventer or other types of controls before the mixing system.  Also, it is always recommended (and required for the warranty) to install a screen filter before the mixer.

NEED HELP calculating your mix ratio or percentage?  Click here.