The Flojet Macerator Pump will empty a typical 30-gallon holding tank in less than three minutes. The time increases somewhat as the distance pumped is increased beyond 25'. The pump will macerate and pump all waste and tissue normally found in RV waste systems. Put an end to handling and rinsing a dirty 3" sewer hose; instead use a cleaner easier to handle garden hose. Now you can pump up hill and around corners.• Flow rate of up to 3.6 GPM for fast dumping• Self-priming up to 4' above the tank liquid level• The intake port will accept a 3" ID slip-on sewer hose• Discharge port fits a 1" ID hoseSpecificationsMax GPM: 3.6Voltage: 12 DCInlet Port: 1-1/2"Outlet Port: 1-1/2"Dimensions: 10"L x 5"W x 3.7"H Intake port will accept a 3"" ID slip-on sewer hose Discharge port fits a 1"" ID hose | Xylem Flojet RV 12V Waste Macerator Pump, 3.6GPM