Refrigeration equipment and supplies are the parts used in a refrigeration system. Each of these parts complements each other and makes the refrigeration system work properly. These parts include compressors, evaporators and condensers, line valves, gas and oil, etc.Refrigeration equipment and supplies are the parts used in a refrigeration system. Each of these parts complements each other and makes the refrigeration system work properly. These parts include compressors, evaporators and condensers, line valves, gas and oil, etc.