Rainman Desal

Rainman Water Makers Fresh Water Anywhere. Water, Water, Everywhere.

A Fresh approach to saltwater desalination.

Rainman Watermakers are a compact system designed to generate a fresh potable water supply from seawater. They can be installed in a minimum footprint configuration or kept portable for maximum flexibility.

We use only top quality components in the build process from the best manufacturers: Honda, General Pump, Filmtec, and Noshok. Our filters, membranes and replacement parts are non-proprietary for ease of service worldwide.

The production-ready prototype was launched at the 2014 Sanctuary Cove Boat Show on the Gold Coast, Australia. After a overwhelmingly enthusiastic response at the boat show, production began and first shipments shortly thereafter. Keen to expand our product line, work immediately began on the design of the electric versions of the system (230V/50Hz and 115V/60Hz). The first units were marketed across Australia to ensure reliability of the design and production. After achieving local success, the product was launched internationally later in 2014.

Email all enquires to parts@pdmengineering.com.au

Explore the range below and available products for purchase at the bottom of the page.

Water Maker Comparison

At A Glance

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

	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
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)	nil	32 Amps
Motor Type	1.5HP TEFC induction	Honda GXH50 (4 stroke)	Permanent magnet TEFC DC
Plug Type	Australia – AS/NZS 3112	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 6 Metres in Open Lot	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)	5 metres (16 ft)	3 metres (10 ft)
Vertical Water Lift	2 metres (6 ft)	2 metres (6 ft)	2 metres (6 ft)