Johnson Pumps 10-13373-03 Viking Power 32 Waste Pump, 12V Waste pump with single chamber design and non-choke valves capable of pumping unmacerated sewage to holding or septic tanks Designed to meet the rigorous demands of leading manufacturers of RVs, boats and busses Ball bearing transmission for long service life Can be run dry and also handle a mixture of air and water 8.5 GPM open flow capacity