Temperature
% of Propylene Glycol
Caution: For operating temperatures colder than the temperature stated above,
the percentage of propylene glycol must be increased. Failure to do so
could result in a cracked torch head, hoses or other damage to the torch
coolant system due to freezing.
Hypertherm pre-mix (028872)
Maximum glycol percentage
°F°C
Custom Coolant mix for cold operating temperatures (below -12° C / 10° F)
Use the chart below to determine what percentage of propylene glycol to use in the mixture.
Mix 100% glycol (028873) with the premixed Hypertherm coolant (028872) to increase the percentage of glycol. The
100% glycol solution can also be mixed with purified water (see next page for water purity requirements) to achieve the
required protection from freezing.
Note: Maximum percentage of glycol should never exceed 50%.
Freezing Point of Propylene Glycol Solution
10/16/08
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