Whale Submersible Pump Standard 12V - 10LPMThese pumps are designed to pump clean cold freshwater in low voltage applications such as a leisure boat or recreational vehicle. The Whale Submersible Standard Pump can transport up to 10. 3 L a minute. They are extremely easy to use and are ideal for external water sources. To get an idea of how to set up this water pump check out the diagram in the pictures above Benefits & Features Suitable for 10 mm (38) or 13 mm ( ) flexible hose (with adapter)