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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MaddDembinski
Massapequa, US
★★★★★ 5
Runs small
Size: 3T, Color: Black
Runs just a little small. Maybe upsize, but great otherwise!
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Reviewed in the United States on February 28, 2026
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Lorraine
Phoenix, US
★★★★★ 5
I was delighted with the quality and color
Size: X-Small, Color: Lilac
This is a super cute, and frankly, fairly high fashion little hoodie. The price was great for what it is. Really nice soft (terry?) inside. Double fabric hood. Really soft. It has an oversized cut which makes it easy to get on and off, but is just the right length to make the sizing look great and intentional - it doesn't look too big. I love the color. It's high quality, and I didn't notice any shrinkage. Even the hood is cut in a chic way. Not your average kids' hoodie.
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Reviewed in the United States on October 26, 2025
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David Cowart
Belleville, US
★★★★★ 4
will shrink when dried.
good quality buy runs a little small.
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Reviewed in the United States on April 24, 2026
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Jenni Piepgrass
Cuba, US
★★★★★ 5
Cutest hoody for toddlers
Size: 3T, Color: Lilac
Amazing!! The cutest colour. Got it for my niece who is 2- got a size 3T and it’s fits perfect so I would definitely size up
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Reviewed in the United States on March 2, 2026
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Kristi
Omaha, US
★★★★★ 5
Great fit
Size: 3T, Color: Light Grey Heather
Very soft and great material. Stretchier than expected. Fit was great
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Reviewed in the United States on May 2, 2026

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