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Donaldson Compressed Air & Gas highly efficient aftercoolers are an economical way to remove water vapor and cool compressed air to useable levels preparing for further filtration and drying applications.

Air -Cooled AfterCoolers Donaldson Air-Cooled AfterCoolers (130-4,500 scfm) provide economical cooling by using ambient air to cool the hot compressed air from an air compressor. Discharge air from an air compressor is generally 180˚F – 350˚F, depending on the type of compressor. As the compressed air cools, about 60% of the water vapor present condenses into liquid water which should be immediately removed from the system with a separator. Air-Cooled AfterCoolers can be sized to cool the hot compressed air to within 5˚F to 20˚F of the ambient air temperature. Aftercoolers can be installed so normal wasted heat can be reclaimed and recirculated.

Water-Cooled AfterCoolers Donaldson Water-Cooled AfterCoolers and separators are an ideal combination to remove troublesome moisture from compressed air. With proper installation of aftercoolers and matching liquid separators, conclusive proof has shown that they perform effectively in maintaining trouble-free operation of compressed air equipment. By lowering the temperature of the compressed air in downstream air lines using water-cooled aftercoolers, up to 70% of the water vapor present condenses to a liquid, which can then be removed by moisture separators.