SKU: 95714965737

4"x40" | 1,950 GPD | 99.4% Salt Rejection | Watermaker | FilmTec SW30-4040 Seawater Membrane

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Description

4"x40" | 1,950 GPD | 99.4% Salt Rejection | Watermaker | FilmTec SW30-4040 Seawater MembraneDuPont FILMTEC SW30 4040 Seawater RO Elements for Watermakers and Marine Systems (Replaces SW30HRLE 4040) DuPont DOW FILMTEC SW30 4040 elements have one of the highest flow rates available to meet the water demands of both sea based and land based desalinators. Commonly used in on board Watermakers to create drinking water from seawater for yachts, boats, and cruise ships, DOW FILMTEC marine SWRO elements offer the highest productivity while




DuPont FILMTEC SW30-4040 Seawater RO Elements for Watermakers and Marine Systems (Replaces SW30HRLE-4040)

DuPont DOW FILMTEC SW30-4040 elements have one of the highest flow rates available to meet the water demands of both sea-based and land-based desalinators. Commonly used in on-board Watermakers to create drinking water from seawater for yachts, boats, and cruise ships, DOW FILMTEC marine SWRO elements offer the highest productivity while maintaining excellent salt rejection. DOW FILMTEC SW30 elements may also be operated at lower pressure to reduce pump size, cost, and operating expenses

DuPont (formerly DOW) FILMTEC SW30-4040 is FDA – 21 CFR 177.2550; Food and Drug Administration Compliant.


DOW FilmTec vs DuPont FilmTec & Membrane Compatibility Notes:

  • DowDuPont merger was completed in 2017 and FilmTec Corporation was moved to DuPont. DOW Water Solutions and DOW FilmTec Membranes are now DuPont Water Solutions and DuPont FilmTec Membranes.

  • FilmTecMembrane SW30HRLE-4040 (255048) was discontinued by DuPont in 2022. The factory-recommended replacement is SW30-4040.

Specifications for SW30-4040

FilmTec Product: SW30-4040
FilmTec Part Number: 80741
Replaces Membrane: SW30HRLE-4040

255048
Size (Approximate): 4" Dia. x 40"L
Flow Rate: 1,900 gpd (7.4 m³/d)
Applied Pressure: 800 psig (55 bar)
Stabilized Salt Rejection: 99.4%
Exterior: Hard Shell Fiberglass
Membrane Type:
Polyamide Thin-Film
Composite

Permeate flow and salt rejection based: 32,000 ppm NaCl feed stream, 77°F, 8% recovery, 800 psig.

Operating Limits for SW30-4040

Maximum Operating Temperature: 113°F (45°C)
Maximum Operating Pressure: 1,000 psig (69 bar)
Maximum Pressure Drop: 15 psig (1 bar)
Maximum Feed Flow Rate: 6 gpm (1.4m³/h)
pH Range, Continuous Operation*: 2-11
pH Range, Short-Term Cleaning**: 1-13
Maximum Feed Silt Density Index: SDI 5
Fere Clorine Tolerance***: <0.1ppm

*Maximum temperature for continuous operation above pH 10 is 95°F
**Refer to cleaning guidelines.
***Under certain conditions, the presence of free chlorine and other oxidizing agents will cause premature membrane failure. Since oxidation damage is not covered under warranty, Dow recommends removing residual free chlorine by pretreatment prior to membrane exposure.


Benefits of DuPont FilmTec Marine RO Membranes:

  • Convert seawater into drinking water on yachts, boats, cruise ships, off-shore platforms, and resorts
  • High flux reduces energy use or pressure required
  • Good rejection results in good quality water
  • FilmTec performance and quality

Common Applications for FilmTec SW30-4040 Seawater RO Elements:

  • Seawater Desalination
  • Marine Applications
  • Small Desalination Systems
  • Watermaker RO Systems
  • Yachts

Physical Dimensions of DuPont DOW FilmTec SW30-4040 SWRO

INCHES (MM)
A 40.0 (1,016)
B 1.05 (2637)
C 0.75 (19)
D 3.9 (99)

SW30-4040 Fits nominal 4-Inch ID pressure vessels and has identical dimensions to SW30HRLE-4040 which is now discontinued.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 95714965737

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4.3 ★★★★★
Based on 17 reviews
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Product Reviews
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Verified Purchase
Gigi
Waukegan, US
★★★★★ 5
Great legs - sturdy when fully assembled with tabletop.
Size: H Desk Unfinished 3/4-in and 1/2-in
These legs are great. I put it together with a butcher block tabletop and it turned out beautifully. I recommend using a level on the legs once you get them into position and again when you place a top on it. The screws included were so easy to screw into the block but that will vary depending on the top you select. Watch the videos another reviewer posted on cleaning the legs with a mild soapy water and dry them thoroughly. It really helped me. Also after it was all assembled I used a clear acrylic - in a spray can to clear coat and seal the legs. I am really happy with it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 4, 2020
R
Verified Purchase
Ronald D Smith Jr
Phoenix, US
★★★★★ 5
Perfect
Size: 16 Inch
Exactly what I ordered, took just a few minutes to assemble and mount the legs. Love that the bottoms can be manipulated to give a balanced stance.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 23, 2026
K
Verified Purchase
Kali S.
Lake Worth, US
★★★★★ 5
Perfect
Size: 16 Inch
Love the sturdieness and the almost stram punk look to these. Great quality and easy to install
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 16, 2025
K
Verified Purchase
Kerry Ninneman
Lowell, US
★★★★★ 4
Good Look and Adjustable Heights
Size: 16 Inch
Legs are sturdy enough, but to hold a small marble top, it required additional glue to secure the "wobble." Adjustable height was excellent and material quality good. Easy enough to install and works well for a table that I don't plan to move frequently.
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Reviewed in the United States on May 9, 2025
C
Verified Purchase
Chancee
Birmingham, US
★★★★★ 5
Sturdy, easy, beautiful
Size: 16 Inch
Put these on a coffee table top and it was the perfect combination. It gives an industrial accent to a wood-centered room. Love them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 7, 2025

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