FilmTec TW30-4021 elements have one of the highest flow rates available to meet the water demands of both sea-based and land-based desalinators. FilmTec SW30 elements may also be operated at lower pressure to reduce pump size, cost, and operating expenses. Features: DUPONT FILMTEC TW30 membrane elements have the highest flow rates available to meet the water demands of both sea-based and land-based desalinators. DUPONT FILMTEC TW30 elements may also be operated at lower pressure to reduce pump size, cost and operating expenses. Improved DUPONT FILMTEC seawater membrane combined with automated, precision element fabrication result in the most consistent product performance available.