At A Glance – AC (electric) v 12v DC Watermakers

Rainman offers three main power sources for our watermakers. AC electric, petrol (gasoline), and 12VDC electric. This table compares the specifications between the AC Electric and 12VDC Rainman systems. Keep in mind there are different options for reverse osmosis (RO) units, so the fresh product water output depends on which one you choose.

Change Comparison View

AC Electric12VDC
Product Water Output Expectations
RO – High Output
(2 x Filmtec SW30-2540)
100 – 140 lph
26 – 37 gph
Not Available
RO – Compact
(2 x Filmtec SW30-2521)
50 – 70 lph
13 – 18 gph
Not Available
RO – Economy
(1 x Filmtec SW30-2540)
50 – 70 lph
13 – 18 gph
26 – 34 lph
7 – 9 gph
System Specifications
Configuration OptionsCase or NakedCase or Naked
AutoflushOptionalOptional
Power Source230VAC / 50Hz
115VAC / 60Hz
12V DC
Power Use1,250 Watts410 Watts
Current Draw6 Amps (230V)
12 Amps (115V)
32 Amps
Motor Type1.5HP TEFC inductionPermanent magnet TEFC DC
Plug TypeUSA – NEMA 5-15
Europe – CEE 7/7
Australia – AS/NZS 3112
UK – BS 1363
Anderson style
Power Cord Length3 metres (10 ft)1.4 metres (4.5 ft)
including battery connectors
Subjective Sound LevelLoud humSoft hum
Measured Sound Level  6 Metres in Open Lot62dB58dB
Integrated Lift PumpFlexible impellerFlexible impeller
High Pressure PumpGeneral Pump WMR SeriesGeneral Pump WMR Series
Operating Pressure55 bar (800 psi)55 bar (800 psi)
Pressure Relief ValveInterpump 316SS/CeramicInterpump 316SS/Ceramic
PrefilterSingle 5 micron pleatedSingle 5 micron pleated
Permeate Flow Meter0 – 150 lph (40 gph) variable aperture0 – 40 lph (11 gph) variable aperture
Intake Hose Length5 metres (16 ft)3 metres (10 ft)
Vertical Water Lift2 metres (6 ft)2 metres (6 ft)

View system details