From ThomasNet: GRAPHALLOY® significantly improves the operation of pumps in difficult applications. Its advantage is demonstrated by its success in an ethylene plant in a Texas refinery.
Ethylene is a very light hydrocarbon that creates problems in pump operation. Because of its low viscosity, ethylene provides minimal lubrication to the rotating parts of the pump. As a result, these pumps are prone to failure. The ethylene service pumps in this particular Texas refinery were failing two to four times a year at an average cost of $75,000 per pump. These pumps were19-stage vertical pumps operating at 3560 rpm.
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Success in An Ethylene Plant