Water Maker Comparison

At A Glance – AC (Electric) v 12 VDC

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 Electric 12VDC
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 Options Case or Naked Case or Naked
Autoflush Optional Optional
Power Source 230VAC / 50Hz
115VAC / 60Hz
12V DC
Power Use 1,250 Watts 410 Watts
Current Draw 6 Amps (230V)
12 Amps (115V)
32 Amps
Motor Type 1.5HP TEFC induction Permanent magnet TEFC DC
Plug Type USA – NEMA 5-15
Europe – CEE 7/7
Australia – AS/NZS 3112
UK – BS 1363
Anderson style
Power Cord Length 3 metres (10 ft) 1.4 metres (4.5 ft)
including battery connectors
Subjective Sound Level Loud hum Soft hum
Measured Sound Level  6 Metres in Open Lot 62dB 58dB
Integrated Lift Pump Flexible impeller Flexible impeller
High Pressure Pump General Pump WMR Series General Pump WMR Series
Operating Pressure 55 bar (800 psi) 55 bar (800 psi)
Pressure Relief Valve Interpump 316SS/Ceramic Interpump 316SS/Ceramic
Prefilter Single 5 micron pleated Single 5 micron pleated
Permeate Flow Meter 0 – 150 lph (40 gph) variable aperture 0 – 40 lph (11 gph) variable aperture
Intake Hose Length 5 metres (16 ft) 5 metres (16 ft)
Vertical Water Lift 2 metres (6 ft) 2 metres (6 ft)

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