Small but powerful membrane pump for onboard water pressure systems. Available with automatic pressure switch or with manual control. Performance: 4.3 litres per min to a max of 2 taps at a time. Safe dry running and self priming to 0.9m. 9.5mm (3/8\") connection. The auto version has an on/off pressure differential of 1.5 / 2.4 bar. 12V, 1.9A. Size: 162 x 89 x 58mm.