WHALE Universal Pump 18 Litres High Pressure. The UF1815 is one of the Universal Fresh Water Pressure Pumps delivering 18 ltrs per minute the pump requires no external switching and delivers fresh water on demand. Outlets: 4+. Flow rate: 18ltr per min. Fuse 12amp. Max Suction Lift 3m. Max Head 30m. Cut Out Pressure: 45psi (3bar). Voltage: 12v.