Rainman Auto Flush

Designed to extend the life of reverse osmosis membranes, the Rainman Autoflush System automates routine maintenance by flushing seawater from your Rainman watermaker with fresh water on a timed schedule. Left unflushed, seawater can degrade membranes due to decaying organic matter. This system provides a reliable, hands-free solution for long-term care.

Ideal for both new and existing Rainman installations, the Autoflush System uses a solid-state timer, motorised valve, and activated carbon filter to keep systems clean with minimal user input.

• Programmable flush cycle (2–8 minutes) runs every 7 days automatically
• Uses boat’s fresh water supply; carbon filter removes chlorine from municipal sources
• Easy one-button operation with automatic countdown reset
• Safe shutdown protocols protect fresh water tanks during power loss
• Works with both 12V and 24V DC systems
• Includes two carbon filter cartridges (each lasts up to 6 months)
• Fully compatible with new and previously installed Rainman watermakers