SW30-4040 FilmTec 4 x 40″ Seawater Membrane

FilmTec SW30-4040 Seawater RO Membrane – High-Performance Desalination Solution

The DuPont FilmTec SW30-4040 Seawater RO Membrane is a high-efficiency reverse osmosis element designed to deliver reliable and cost-effective desalination. With a 4-inch diameter and 40-inch length, this industry-standard seawater membrane is ideal for use in marine watermakers, yacht and boat desalinators, as well as small to medium-sized land-based desalination systems.

Engineered with a polyamide thin-film composite spiral-wound design, the SW30-4040 offers exceptional salt rejection up to 99.4%, ensuring a consistent supply of clean, safe, and great-tasting water. Its durable fiberglass shell and ability to operate at pressures up to 69 bar make it suitable for challenging seawater applications while reducing overall pump and energy costs.

Whether for marine, offshore, or coastal operations, this RO membrane guarantees long-lasting performance, high permeate flow rates (7.4 m³/day), and reduced maintenance costs.

Key Features

• Industry-leading DuPont (Dow) FilmTec technology for seawater desalination

• High salt rejection (99.4%) for superior water quality

• Optimized for marine and land-based desalination systems

• Durable fiberglass shell for long service life

• Operates at lower pressures to minimize energy consumption

• Proven reliability in yachts, boats, offshore platforms, and coastal facilities

Specifications

• Application: Seawater Desalination

• Type: Polyamide Thin-Film Composite

• Dimensions: 4″ x 40″ (99mm x 1016mm)

• Permeate Flow Rate: 7.4 m³/day

• Salt Rejection: 99.4%

• Max. Operating Pressure: 69 bar

• Max. Temperature: 45°C

• pH Range (Cleaning): 1–13

• Chlorine Tolerance: <0.1 ppm

• Model Number: SW30-4040

The FilmTec SW30-4040 membrane is the preferred choice for professionals seeking reliable seawater desalination, reduced operating costs, and long-term system efficiency.