Diaphragm Bilge PumpFlow rate: Nominal 8 gallons/minSelf-priming from dry up to 7.8ftFeatures: Diaphragm Design Allows Dry Running.Quiet Operation.Permanently Lubricated Ball Bearings on Shaft and Connecting Rod.Large Vibration Absorbing Pads.Corrosion Resistant Materials Throughout for Sea Water Service.Meets USCG Regulation 183.410 and ISO 8846 MARINE for Ignition ProtectionJabsco automatic water system pumps are designed for self contained recreational vehicles and pleasure boats with multiple-outlet water systems. The systems are automatic -when a faucet is opened, the pump instantly begins operation to provide a constant flow from tank to faucet. Closing the faucet automatically discontinues pump operation.Gallons Per Hour NONE