
Filmtec (SW30-2521) Seawater Membrane 300 GPD 2.5"X21"
Filmtec SW30-2521 Seawater RO Membrane
The Filmtec SW30-2521 seawater reverse osmosis membrane delivers 300 gallons per day of permeate flow with 99.4% stabilized salt rejection from 32,000 ppm feedwater. Designed for both sea-based and land-based desalinators, this element operates efficiently at 800 PSI (55 bar) or can be run at lower pressures to reduce energy costs and pump requirements.
Built for Seawater Performance
Highest Flow Rates
Industry-leading 300 GPD production from compact 2.5" x 21" form factor with 13 sq ft membrane area
Superior Salt Rejection
99.4% stabilized rejection against 32,000 ppm NaCl feedwater for consistent permeate quality
Pressure Flexibility
Rated for 800 PSI operation but can run at lower pressures to reduce pump size and operating costs
Precision Fabrication
Automated manufacturing ensures consistent element performance with flow variance of +/-20%
Marine & Land Use
Engineered for both offshore marine desalination and land-based seawater treatment facilities
Proven Chemistry
Tested at 77°F with 2% recovery rate for reliable specification performance in real conditions
Commercial Seawater Systems
The Filmtec SW30-2521 membrane is designed for commercial seawater reverse osmosis systems requiring 2.5-inch diameter elements. Compatible with pressure vessels rated for 800 PSI or higher, this membrane fits standard 21-inch housings. Ideal for marine vessel desalinators, offshore platform water systems, coastal industrial facilities, and land-based seawater treatment plants. Part of the Dow Filmtec SW30 commercial membrane series engineered specifically for high-salinity feedwater applications.
Filmtec SW30 elements are backed by decades of desalination engineering and automated precision manufacturing for consistent, reliable seawater treatment performance.
Filmtec SW30-2521 Seawater RO Membrane
The Filmtec SW30-2521 seawater reverse osmosis membrane delivers 300 gallons per day of permeate flow with 99.4% stabilized salt rejection from 32,000 ppm feedwater. Designed for both sea-based and land-based desalinators, this element operates efficiently at 800 PSI (55 bar) or can be run at lower pressures to reduce energy costs and pump requirements.
Built for Seawater Performance
Highest Flow Rates
Industry-leading 300 GPD production from compact 2.5" x 21" form factor with 13 sq ft membrane area
Superior Salt Rejection
99.4% stabilized rejection against 32,000 ppm NaCl feedwater for consistent permeate quality
Pressure Flexibility
Rated for 800 PSI operation but can run at lower pressures to reduce pump size and operating costs
Precision Fabrication
Automated manufacturing ensures consistent element performance with flow variance of +/-20%
Marine & Land Use
Engineered for both offshore marine desalination and land-based seawater treatment facilities
Proven Chemistry
Tested at 77°F with 2% recovery rate for reliable specification performance in real conditions
Commercial Seawater Systems
The Filmtec SW30-2521 membrane is designed for commercial seawater reverse osmosis systems requiring 2.5-inch diameter elements. Compatible with pressure vessels rated for 800 PSI or higher, this membrane fits standard 21-inch housings. Ideal for marine vessel desalinators, offshore platform water systems, coastal industrial facilities, and land-based seawater treatment plants. Part of the Dow Filmtec SW30 commercial membrane series engineered specifically for high-salinity feedwater applications.
Filmtec SW30 elements are backed by decades of desalination engineering and automated precision manufacturing for consistent, reliable seawater treatment performance.
Original: $758.22
-65%$758.22
$265.38Description
Filmtec SW30-2521 Seawater RO Membrane
The Filmtec SW30-2521 seawater reverse osmosis membrane delivers 300 gallons per day of permeate flow with 99.4% stabilized salt rejection from 32,000 ppm feedwater. Designed for both sea-based and land-based desalinators, this element operates efficiently at 800 PSI (55 bar) or can be run at lower pressures to reduce energy costs and pump requirements.
Built for Seawater Performance
Highest Flow Rates
Industry-leading 300 GPD production from compact 2.5" x 21" form factor with 13 sq ft membrane area
Superior Salt Rejection
99.4% stabilized rejection against 32,000 ppm NaCl feedwater for consistent permeate quality
Pressure Flexibility
Rated for 800 PSI operation but can run at lower pressures to reduce pump size and operating costs
Precision Fabrication
Automated manufacturing ensures consistent element performance with flow variance of +/-20%
Marine & Land Use
Engineered for both offshore marine desalination and land-based seawater treatment facilities
Proven Chemistry
Tested at 77°F with 2% recovery rate for reliable specification performance in real conditions
Commercial Seawater Systems
The Filmtec SW30-2521 membrane is designed for commercial seawater reverse osmosis systems requiring 2.5-inch diameter elements. Compatible with pressure vessels rated for 800 PSI or higher, this membrane fits standard 21-inch housings. Ideal for marine vessel desalinators, offshore platform water systems, coastal industrial facilities, and land-based seawater treatment plants. Part of the Dow Filmtec SW30 commercial membrane series engineered specifically for high-salinity feedwater applications.
Filmtec SW30 elements are backed by decades of desalination engineering and automated precision manufacturing for consistent, reliable seawater treatment performance.












