Description
The membrane is a key part of your watermaker, and is at the core of the desalination process. This component extracts the potable fresh water from the filtered and pressurised seawater stream. When well cared for, the membrane should last five to ten years. The important aspect to be aware of is that you do not want small organisms in the seawater dying and rotting in your membranes.
As your membranes age, the TDS (total dissolved solids) will gradually increase. Most people will change membranes when the TDS readings get to 700-800 parts per million (ppm).
Although the membrane could be considered a long term consumable, we generally do not recommend customers keep a spare on board. Failure is extremely rare and membranes have a limited shelf life when new. Rainman uses Filmtec SW30 membranes, either SW30-2540 (2.5″ x 40″) or SW30-2521 (2.5″ x 21″). These are standard sizes and can be easily acquired around the world.
Download installation instructions
When you add any Rainman Watermaker to your cart , add the Annual Supply Kit to your cart for FREE
Please Note: Annual supply kits are not shipped to non US addresses.
Rainman Watermaker - Annual Supply Kit
The Rainman Advantage
Rainman Watermakers offer a compact and efficient solution for producing fresh, potable water from seawater. Designed for versatility, these systems can be installed in a space-saving configuration or used as a portable unit for ultimate flexibility.
Rainman watermakers are built with premium components sourced from leading manufacturers, including Honda, General Pump, Filmtec, and Noshok. We ensure that the filters, membranes, and replacement parts are non-proprietary, facilitating easy service and support globally.
Portable or Installed configurations
Rainman Watermakers are available in Portable and Installed configurations. Each can be converted to the other for maximum flexibility! Portable and installed systems allow for you to choose the best fit for your application as your preference changes.
The Rainman Watermaker portable configuration comes ready to go right out of the box. With set up of your portable desalination taking as little as 10 minutes, you can benefit right away from a fully functional, and extremely robust portable desalination system without the cost and downtime of complex installations.
Rainman watermakers can be installed within there sturdy cases, or as a traditional installed module. This gives you the flexibility should you choose to install your watermaker immediately, or if even you decide to in years from now. A range of accessories are available to help you install your Rainman watermaker in our parts store.
Electric or Gasoline Watermaker
Rainman Watermakers are solid, robust portable desalination systems designed for the extremes of a maritime environment and built with ingenuity, with the most popular of our systems needing only a small portable generator to operate, and our gasoline systems being completely independent and backed by the global and prestigious Rainman Honda warranty. Check out the videos below to watch out most popular portable desalination systems in action and why you too will fall in love the Rainman Watermakers.
ELECTRIC WATERMAKER
Rainman watermakers are quick and easy to setup, yet very simple and reliable to operate. Our 115V rainman desalination systems are the most popular system on the market.
GASOLINE WATERMAKER
True portability, our gasoline systems require no external power, and are the icon of true efficiency. 1 gallon of gasoline equals 140 gallons of water. No Power, No Problem.
Helpful Videos
DESALINATION
Fresh Water Anywhere...
Rainman Watermakers present a streamlined solution crafted for producing clean, drinkable water from seawater. Tailored to fit in compact spaces or adaptable for on-the-go usage, they offer unparalleled versatility.
