FilmTec™ SW30-4040 is DuPont’s workhorse 4" seawater reverse osmosis element for marine watermakers, offshore platforms, and small-to-medium SWRO systems. With 99.7% stabilized salt rejection and a maximum operating pressure of 1,200 psi (83 bar), it turns seawater into fresh water. It replaces 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?
99.7% stabilized salt rejection at DuPont's test conditions (32,000 ppm NaCl, 800 psi), making it suitable for seawater desalination.
What is the maximum operating pressure?
Up to 1,200 psi (83 bar) operating pressure.
What does the SW30-4040 replace?
It replaces the discontinued FilmTec SW30HRLE-4040 and fits the same nominal 4-inch pressure vessels.
What are its dimensions?
40.0 in (1,016 mm) long and 3.9 in (99 mm) in diameter. It fits nominal 4-inch I.D. pressure vessels.
What feed-water salinity can it handle?
It is a seawater element, rated on 32,000 ppm NaCl test water. The salinity it can treat in your system depends on the design, which must keep the operating pressure within 1,200 psi (83 bar).
Specifications verified against the DuPont FilmTec™ Seawater Elements product data sheet, Form No. 45-D01519-en, Rev. 10 (October 2024). Please confirm current specifications before purchase.
