Which Rainman Watermaker is right for you?

Although the Rainman watermaker was originally designed as a portable system not requiring installation, many of our customers choose to partially or fully install the system in their boat. The variations can range widely, including installation of both the pressure supply unit and reverse osmosis case to installing one or the other of the units.

If you are uncertain whether you wish to have a portable or installed watermaker, the best option is to buy the portable version. You can then run it portable for a while and decide if you are happy with that configuration or wish to install it at a later date. It also gives you more time to determine where you want to install the system. It is easy to install a portable watermaker, but you do not want to uninstall a permanently mounted system.

*Scroll from right to left on the table to see the full table*

AC Electric Petrol (Gasoline) 12VDC Electric
Product Water Output Expectations
RO – High Output
(2 x Filmtec SW30-2540)
• 100 – 140 lph
• 26 – 37 gph
• 100 – 140 lph
• 26 – 37 gph
Not Available
RO – Compact
(2 x Filmtec SW30-2521)
• 50 – 70 lph
• 13 – 18 gph
• 50 – 70 lph
• 13 – 18 gph
Not Available
RO – Economy
(1 x Filmtec SW30-2540
• 50 – 70 lph
• 13 – 18 gph
• 50 – 70 lph
• 13 – 18 gph
• 26 – 34 lph
• 7 – 9 gph
System Specifications
Configuration Options Case or Naked Case only Case or Naked
Operation Mode Installed / Portable Portable only Installed / Portable
Control Panel Optional Not available Optional
Autoflush Optional Not available Optional
Power Source • 230VAC / 50Hz
• 115VAC / 60Hz
Petrol (Gasoline) 12V DC
Power Use 1,250 Watts 700ml Fuel / 70 Minutes 410 Watts
Current Draw • 6 Amps (230V)
• 12 Amps (115V)
32 Amps
Motor Type 1.5HP TEFC induction Honda GXH50 (4 stroke) Permanent magnet TEFC DC
Plug Type • USA – NEMA 5-15
• Europe – CEE 7/7
• Australia – AS/NZS 3112
• UK – BS 1363
N/A Anderson style
Power Cord Length 3 metres (10 ft) N/A 1.4 metres (4.5 ft) including battery connectors
Subjective Sound Level Loud hum Slightly quieter than Honda 2kVA generator (under max load) Soft hum
Measured Sound Level 62dB 73dB 58dB
Integrated Lift Pump Flexible impeller Flexible impeller Flexible impeller
High Pressure Pump General Pump WMR Series General Pump WM Series General Pump WMR Series
Operating Pressure 55 bar (800 psi) 55 bar (800 psi) 55 bar (800 psi)
Pressure Relief Valve Interpump 316SS / Ceramic Interpump 316SS / Ceramic Interpump 316SS / Ceramic
Prefilter Single 5 micron pleated Single 5 micron pleated Single 5 micron pleated
Permeate Flow Meter 0 – 150 lph (40 gph) variable aperture 0 – 150 lph (40 gph) variable aperture 0 – 40 lph (11 gph) variable aperture
Intake Hose Length 5 metres (16 ft) 3 metres (10 ft) 5 metres (16 ft)
Vertical Water Lift 2 metres (6 ft) 2 metres (6 ft) 2 metres (6 ft)

Ready to order your rainman watermaker?