FilmTec™ SW30-4040 is DuPont’s workhorse 4" seawater reverse osmosis element for marine watermakers, offshore platforms, and small-to-medium SWRO systems. With 99.4% stabilized salt rejection at up to 1,000 psi operating pressure, it converts full-strength seawater (up to ~45,000 ppm TDS) into potable water. It is the recommended substitute for the discontinued SW30HRLE-4040.
Fits standard nominal 4" × 40" pressure vessels — used across the ForeverPure SWRO watermaker range.
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Frequently Asked Questions
What is the permeate flow rate of the FilmTec SW30-4040?
1,950 GPD (7.4 m3/day) at standard test conditions: 32,000 ppm NaCl, 800 psi, 77 F, 8% recovery.
What salt rejection does the SW30-4040 deliver?
99.4% stabilized salt rejection, making it suitable for full-strength seawater desalination.
What is the maximum operating pressure?
Up to 1,000 psi (69 bar) operating pressure.
What does the SW30-4040 replace?
It is DuPont's recommended replacement for the discontinued FilmTec SW30HRLE-4040.
What is the active membrane area?
82 sq. ft. (7.6 m2) of active membrane area in a nominal 4 in. x 40 in. spiral-wound element.
What feed-water salinity can it handle?
Full-strength seawater up to approximately 45,000 ppm TDS.
Specifications verified against the manufacturer data sheet.
