Rainman

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 Rainman Advantage

VERSATILITY

Rainman watermakers can be easily transferred between boats or used in remote land based applications. Keep your watermaker when you change your boat.

RELIABILITY

Partnering with the best companies for components, Rainman watermakers have a very high quality build, ensuring reliability and longevity of your investment.

LIFE CYCLE COST

With modest initial investment and components designed for durability and easy maintenance, the overall life cycle cost of a Rainman watermaker is kept to a minimum.

GLOBAL SUPPORT

A global network of over sixty dealers are in place to ensure you have support in the far corners of the world. Routine consumable parts are non-proprietary and easily sourced.

Operation Mode

Portable Watermaker

The origins of Rainman established our reputation as the “Portable Watermaker” in the blue case. Although many customers will prefer to install their Rainman, many benefits exist for keeping your system portable.

Framed Watermakers

Our framed watermaker systems are designed for those customers that want an easier installation and have sufficient space to fit the entire system into a single location. Three different options are all powered by AC electric and have outputs between 100 and 240 litres per hour (26 to 63 gallons per hour).

Modular Watermaker

Rainman’s modular system is designed to utilise the minimum footprint for an installation. Each component can be mounted into small and remote locations of your vessel.

The primary system is comprised of a pressure supply unit (PSU) and a reverse osmosis unit (RO). Both parts are required to make a complete watermaker.

Applications

Marine

Living in small remote areas, entire villages may be found completely isolated, without electricity, and without fresh water. Without preparation, the entire village can be in a dire struggle for life. In survival situations, fresh water is at the top of the priority list after immediate physical danger. Acquiring a Rainman watermaker is a small investment for communities potentially exposed to cyclones and other natural disasters.

Remote Area & Emergency Response

Living in small remote areas, entire villages may be found completely isolated, without electricity, and without fresh water. Without preparation, the entire village can be in a dire struggle for life. In survival situations, fresh water is at the top of the priority list after immediate physical danger. Acquiring a Rainman watermaker is a small investment for communities potentially exposed to cyclones and other natural disasters.

Military

Militaries around the world use reverse osmosis as their default filtration system. When space and weight is a premium, militaries need the smallest and lightest portable system available. Rainman desalination is the most portable system around.

Easily carried in two pieces
Stores easily with other equipment
Simple design means reliable and field serviceable
Top quality components and materials adds reliability and corrosion resistance

Spare Parts & Consumables

Consumable Part

PLEATED PAPER 5 MICRON PRE-FILTER CARTRIDGE. The life of your pre-filter cartridge will depend largely on the source water being used. Drawing water out of the open ocean may allow your pre-filter cartridge last for several months, while drawing from polluted bays may foul your cartridge within hours of use. The cartridge is a 10" x 2.5" 5 micron pleated paper filter. These inexpensive cartridges are widely used and available throughout the world from water filtration retailers and hardware stores. Please note it is very important to use a 5 micron filter with this system to protect the RO membranes and the high pressure pump.

Sodium Metabisulfite Pickling Solution Mix

With proper care, your reverse osmosis membranes will last for years. Due to the nature of reverse osmosis, the membranes self-clean while the system is in use. However, when the system goes unused for an extended period of time, the membranes need to be “pickled” to ensure bacteria doesn’t grow inside and damage the membranes. The powder itself is sodium metabisulfite and dissolves easily in cold water. It is safe and widely used in the food and beverage industry. This chemical is widely used and available easily from home brew and wine making retailers, among others. The length of time your system can sit idle without pickling is largely dependent on air and water temperature.