The Ritchie 686800-77940 Max-Flow Combination Oil Pump is a high-quality unit designed for use in HVAC and refrigeration systems. This pump, with model number Ritchie 686800 77940, is specifically crafted by the reputable brand Ritchie to provide efficient and reliable oil pumping capabilities. With a unit quantity of 1, this combination oil pump is a valuable addition to any business or industrial setting requiring smooth and effective HVAC and refrigeration system operation.