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 - CAPACITY 21 L/MIN 5.5 GPM: Perfect for bilge pumping, deckwash, water circulation, oil & diesel refuelling at dockside service etc. The motor has a built-in thermal overload for added protection.