Dow filmtec Seawater 40 inch SW30-2540 Reverse Osmosis Membrane.

The membrane is the heart of the reverse osmosis system. It removes salt, minerals, and other contaminants from seawater, delivering pure, drinkable freshwater for marine, industrial, and residential applications.

Membrane with Housing – Frequently Asked Questions (FAQ)

How often should I replace the RO membrane

With proper flushing and regular maintenance, RO membranes typically last 3 to 5 years. Actual lifespan depends on usage, feedwater quality, and system care.

Care should be taken regarding what is discharged overboard while making water, as contaminants can be drawn back into the watermaker and severely damage the membranes.