Hot Oil Pumps
Hot oils are used in chemical processes, food processing plants and general industry where hot oils are used. Some oils require their heat to be retained so as to not waste energy in the process of moving the hot oil from one process to the next. Reheating fluid after it has been pumped is expensive. For this reason, manufactures had to develop a pump that can sustain temperatures of up to 600 F.
This is a challenge as high pumpage temperatures are detrimental to pump bearings and thermal expansion causes seals and gaskets to crack. High temperatures require special alloy metallurgy to withstand high pumpage temperatures.
Most common types of hot oil pumps are centrifugal and positive displacement screw type pumps. Where general transfer is required, centrifugals work best. Where high pressures and lower flows are needed, screw pumps are better suited.