SKU: 77588034630

4"x40" | 97% Salt Rejection | 2,500 GPD | FilmTec NF270 Element

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Description

4"x40" | 97% Salt Rejection | 2,500 GPD | FilmTec NF270 ElementDOW FILMTEC NF270 4040 Nanofiltration (NF) Membrane Elements for Commercial Systems DOW FILMTEC NF270 4040 Elements are ideal for removing a high percentage of TOC and THM precursors with medium to high salt passage and medium hardness passage in commercial systems. The NF270 nanofiltration membrane is an ideal choice for surface water and ground water where good organic removal is desired with partial softening. DOW FILMTEC NF270 4040 elements have a





DOW FILMTEC NF270-4040 Nanofiltration (NF) Membrane Elements for Commercial Systems



DOW FILMTEC NF270-4040 Elements are ideal for removing a high percentage of TOC and THM precursors with medium to high salt passage and medium hardness passage in commercial systems. The NF270 nanofiltration membrane is an ideal choice for surface water and ground water where good organic removal is desired with partial softening. DOW FILMTEC NF270-4040 elements have a fiberglass outer wrap.



DOW FILMTEC NF270-4040 is FDA – 21 CFR 177.2550; Food and Drug Administration Compliant.



Common Applications for FilmTec NF270-4040 Nanofiltration Elements:



  • Production of Drinking Water


  • Demineralization in Small Commercial Applications



Benefits of DOW FilmTec Commercial NF Membranes

  • High flux results in high yields


  • Low energy usage reduces power consumption and costs
  • Durable with good cleanability for long element life


  • FilmTec performance and quality



Specifications for NF270-4040



FilmTec Product:

NF270-4040


FilmTec Part Number:

149987
Size (Approximate): 4" Dia. x 40"L


Flow Rate:

2,500 gpd (9.5 m³/d)


Applied Pressure:

70 psig (4.8 bar)


Stabilized Salt Rejection:

>97%


Single Element Recovery:

15%
Exterior:

Hard Shell Fiberglass


Membrane Type:

Polyamide Thin-Film


Composite

Permeate flow and salt rejection based: 2,000 ppm MgSO4 feed stream, 77°F, 15% recovery, 70 psig.



Operating Limits for NF270-4040



Maximum Operating Temperature:

113°F (45°C)


Maximum Operating Pressure:

600 psig (41 bar)


Maximum Pressure Drop:

15 psig (0.9 bar)


Maximum Feed Flow Rate:

16 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.



Related Products for use with NF270-4040

PV4040PWG

PVC Membrane Housing Pressure Vessel for 4" x 40" Membrane Element
PV4080PWG

PVC Membrane Housing Pressure Vessel for (2) 4"x40" Membrane Elements
PV4040SSAU-316

Stainless Steel Membrane Housing Pressure Vessel for 4" x 40" Membrane Element
PV4080SSAU-316 Stainless Steel Membrane Housing Pressure Vessel for (2) 4" x 40" Membrane Element
PV4040SSAW-316

Stainless Steel End-Clamp-Style Membane Housing Pressure Vessels for 4" x 40" Membrane Elements
PV4080SSAW-316 Stainless Steel End-Clamp-Style Membane Housing Pressure Vessels for (2) 4" x 40" Membrane Elements
PV-IN410 Interconnector Coupler for Installing Multiple Elements in a housing - FilmTec part # 89055. Includes two o-rings.



Physical Dimensions of DOW FilmTec NF270-4040

INCHES (MM)
A

40.0 (1,016)
B

1.05 (27)
C

0.75 (19) OD
D

3.9 (99)

NF270-4040 Fits nominal 4-Inch I.D. pressure vessels.

For more information, please visit this products webpage.
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SKU: 77588034630

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M. Hieber
Battle Creek, US
★★★★★ 5
Perfect, Perfect, Perfect!
Format: Board book
Up until about 6 months ago our three year old expressed little to no interest in books at all. The first book that captivated him was a book about rockets and since then it's pretty much been multiple books about rockets and trains with just a few others thrown in here and there. Then we found the Pookie books. We first got the Goodnight Pookie book and my son loves it so much that he wants us to read it to him many, many times at bedtime - something he didn't even request with his favorite rocket books! We bought him this one along with several other Boynton books and they are all hits! I'm so glad to see him get into a book that isn't focused on a vehicle or superhero. The books are also so cute! They rhyme and are the perfect length for bedtime.
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Reviewed in the United States on June 28, 2020
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Collette
Carnegie, US
★★★★★ 5
A Warm Fuzzy Feeling Book
Format: Board book
This board book has beautiful illustrations and verse. This book is engaging even for the very, very young.
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Reviewed in the United States on March 11, 2026
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sks
Birmingham, US
★★★★★ 5
Buy it!
Format: Board book
This book is so cute! Love all Sandra Boynton books, but this is one of my all time favorites. Great for an Easter basket or a gift for a toddler!
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Reviewed in the United States on March 20, 2025
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Nurse Runner
Carnegie, US
★★★★★ 5
So sweet
Format: Board book
We love Sandra Boynton books and this is probably her sweetest. My kids always snuggle in with this one and I love the sentiment!
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Reviewed in the United States on April 15, 2026
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Scraptraveler
Bozeman, US
★★★★★ 5
You Can’t go wrong with Sandra Boynton Books
Format: Board book
I think we have almost all the books by this author. They are fun and full of colors and the stories keep the attention of little ones. Our grandchildren love these books! From birth up these books are terrific!
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Reviewed in the United States on October 29, 2024

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