The original Rainman watermaker was our petrol (gasoline) powered system. In 2014, our first version of this system made the industry ask “Why didn’t someone think of a portable watermaker before this?
This system requires no external power source, so long as you have fuel. It is ideal if you don’t have a generator and need to conserve your battery bank. Not relying on external power gives maximum flexibility for taking it ashore, loaning it out, or using it in emergencies.
The heart of this system is the Honda GXH50 2.1HP engine, which is the same as that used in their 1kVA generator. It incorporates a tensioned belt drive system where the engine drives both an impeller lift pump and the General Pump high-pressure pump. The fuel tank holds 700ml (1.5 pt) and will run for about 70 minutes, depending on fuel quality.
Related RO dimensions
– High Output: 1,180 x 250 x 130mm (46.5 x 9.8 x 5.1″)
– Compact: 690 x 220 x 150mm (27.2 x 8.7 x 5.9″)
– Economy: 1,180 x 250 x 130mm (46.5 x 9.8 x 5.1″)
Related RO weight
– High Output: 23kg (51lb)
– Compact: 14kg (31lb)
– Economy: 11kg (24lb)
The system is made up of a pressure supply unit (PSU) and a reverse osmosis unit (RO). Both parts are required to make a complete watermaker. The PSU lifts the seawater, filters out the sediment and puts the system under high pressure, while the RO unit extracts fresh water from the stream of pressurised seawater. Most of the water goes out to waste as brine output, while about 20% of the volume is extracted as fresh potable water for your tanks. Different RO options exist for you to select with your AC Rainman system, each to achieve their own specific objective
