This item is available for pre-order. Most pre-order items are shipped within 1-2 weeks. To obtain a more accurate estimate, please contact us via phone, email, or online chat.
The SpiroPure SP-SW2540 Seawater Desalination Commercial Reverse Osmosis Membrane Replacement 2.5 x 40 is a high quality, high salt rejection replacement membrane filter cartridge. The SP-SW2540 seawater ro membrane offers an extremely high salt rejection rate, designed for compatible seawater desalination systems and other high sodium applications. SpiroPure’s seawater filtration membranes are durable and reliable replacement seawater filters. Choose SpiroPure’s Seawater Desalination Membrane as a compatible replacement for the models listed below.
Sea Water Desalination RO Membrane Recovery Specifications:
- Nominal Size: 2.5" x 40"
- Certification: NSF/ANSI/CAN 61
- Salt Rejection Rate: 99.6%
- Average Permeate ±15%: 600 GPD @ 800 PSI
- Feedwater NaCl Test Concentration: 32,000 ppm
- Recovery Rate: 8%
- Feed Spacer: 28 mil
- Maximum Recommended NaCl: <40,000 ppm
- Maximum Operating Pressure 1,200 PSI
SP-SW2540 High Rejection Saltwater Filtration Membrane common applications:
- Seawater desalination
- Marine applications
- On-board watermakers for drinking water from seawater
- Watermaker RO Systems
- Yachts, boats, cruise ships, off-shore platforms, resorts
SW salt water/seawater membrane compatible model numbers:
- SE1-2540
- Dupont Filmtec SW30-2540
Additional Information
Seawater Membranes Are Shipped Wet
An important industry practice for seawater desalination RO membranes is to have them "shipped wet." After being tested to industry standards, our membranes are preserved for protection during shipping and for future use. The preservative is food-grade, and is found within the membrane itself and not in the air-tight packaging. The preservative creates a moist environment for the filter media, allowing the permeability and performance to be maintained by preventing biological growth during storage as well as providing a longer shelf-life of one-year from the manufacturing date printed on the package.
FAQs on 2540 Seawater Filters
What is a 2540 seawater RO membrane used for?
A 2540 seawater RO membrane reduces dissolved salts in compatible desalination systems. The SpiroPure SP-SW2540 is designed for marine watermakers, coastal facilities, and commercial seawater treatment applications. Its rated average output is 600 GPD under specified test conditions. Drinking-water suitability depends on the complete system, operation, and water-quality verification.
Is the SpiroPure SP-SW2540 compatible with SW30-2540?
The SpiroPure SP-SW2540 is listed as a compatible replacement for select DuPont FilmTec SW30-2540 and Axeon SE1-2540 applications. Its nominal size is 2.5 × 40 inches. Confirm housing dimensions, seals, pressure ratings, and system operating requirements; nominal size alone does not establish compatibility.
What is the salt rejection rate of the SP-SW2540 membrane?
The published salt rejection is 99.6%, tested at 800 PSI using 32,000 ppm NaCl feedwater and 8% recovery. Actual rejection varies with feedwater and operating conditions. Maximum recommended feedwater NaCl is below 40,000 ppm; this is separate from the test concentration.
Can I use a brackish water 2540 membrane instead of a seawater membrane?
No. Use a membrane and complete system designed for seawater. The SpiroPure SP-BW2540 brackish water membrane has a maximum recommended feedwater NaCl concentration below 10,000 ppm. For SP-SW2540, verify feedwater suitability and the operating pressure ratings of the housing, pump, and other system components before installation.
How often should a 2540 seawater RO membrane be replaced?
Replacement timing depends on feedwater quality, pretreatment, operation, and maintenance. Monitor product-water quality, permeate flow, and system performance against the manufacturer’s service criteria. Follow the applicable storage and shelf-life instructions for an unused wet-preserved membrane; storage life and installed service life are different.
How much does the SpiroPure SP-SW2540 cost?
Check the current price and available purchase options on this page. Confirm that the SP-SW2540 meets your system requirements before ordering. Shipping eligibility depends on your order and delivery location.
