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Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes.
heat exchangers not being parts of machines, namely, brazed plate, gasketed plate, shell and plate, welded plate, spiral, and shell and tube heat exchangers; coils as parts of distilling, heating or cooling installations, namely, coils for heating systems, heat recovery applications, and process applications; air cooling apparatus, namely, aftercoolers for cooling compressed air and gases; heat sinks for use in heating, cooling and ventilating apparatus; heating systems composed primarily of tubes, pipes and pre-assembled manifolds through which hot, cold, warm or low temperature water circulates; gas condensers, other than parts of machines; evaporators for refrigerant chillers, general condensers and reboilers, and feed water heaters; gas condensers, other than parts of machines for refrigerant chillers, reboilers, and feed water heaters