KOSTChill glycol-based heat transfer fluids are engineered with virgin glycols, along with additive systems that have been tested and approved industry wide. KOST USA has a laboratory that has saved customers hundreds of thousands of dollars, and a fluid monitoring program to maximize fluid life as well as the life of your system. Your samples can be turned around in a matter of days rather than weeks. Our lab can develop ways to extend the life of fluids, rather than dumping a complete system.
KOSTChill’s fully formulated glycol-based heat transfer fluids contain an inhibitor and additive package that controls metal corrosion, helps prevent scaling and fouling of heat transfer surfaces, and buffers the pH to maintain it in the optimum operating range. KOSTChill fluids are designed for use in heavy duty applications, such as stationary engines, and refinery and chemical plant processes. The fluids have been tested against ASTM D 1384, which is the accepted industry standard for multi-metal corrosion testing for steel, cast iron, aluminum, copper, brass and solder. The fluids are compatible with most plastics, elastomers and certain types of rubber. They also are stable when mixed with water containing up to 350 ppm total hardness.
Relative to ethylene glycol, propylene glycol has a lower acute oral toxicity. Accordingly, propylene-glycol based heat transfer fluids are at least preferable and often required in food processing industry applications in which there may be accidental contact with foods and beverages or where they may contaminate potable and drinking water. Propylene glycol also has a higher viscosity than ethylene glycol, which results in somewhat lower heat transfer efficiency and somewhat more difficult cold weather pump startup for propylene-glycol based fluids.
When diluting KOSTChill fluids, KOST USA recommends the use of deionized or distilled water. However, tap water, well water or city water may be used when it meets quality standards.
When mixed with appropriate water concentrations, select a glycol concentration with a freeze point at least 5°F below the lowest anticipated ambient temperature. To maintain adequate corrosion protection, fluid should never be diluted below 25%.
The KOSTChill line of glycol-based fluids includes:
- KOSTChill PG HD is an industrial or heat transfer fluid grade fluid.
- KOSTChill PG FG is registered by NSF as a HT-1 approved product and by the CFIA (Canadian Food Inspection Agency) where incidental contact with food may be possible. The propylene glycol and additives used in PG FG are manufactured with ingredients classified as GRAS - generally recognized as safe - by the FDA or acceptable as food additives (Food Additive Regulations, Subparts 182 and 184). The recommended operating temperature range of n.
- KOSTChill EG has a recommended operating temperature range of -60°F to 250°F when mixed with appropriate water concentrations.
- KOSTChill EG HD has a recommended operating temperature range of -60°F to 350°F when mixed with appropriate water concentrations.