With their high level of flexibility, these pumps are ideally suited for use in boats as bilge pumps, deckwash pumps, fresh water pumps and refuelling pumps for oil and diesel. These pumps may be combined with a vacuum switch for automatic operation. Full range of capacities from 15 - 55 L/Min. All motors are heavy duty to provide long service life, even under heavy use. Available in 12 or 24 volts. F3B-19 OIL CHANGE - CAPACITY 21 L/MIN 5.5 GPM: Designed to remove old oil from the engine and fill new oil back into the engine. Reversible rubber impeller pump with integrated quick reversing switch. The motor has a built-in thermal overload for added protection.