SKU: 5168995954

2.5"x21" | 365 GPD | Low Energy | Tape Wrap | FilmTec Membrane

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Description

2.5"x21" | 365 GPD | Low Energy | Tape Wrap | FilmTec MembraneDOW FILMTEC XLE 2521 Low Energy Reverse Osmosis Membrane Element DOW FILMTEC TW30 2521 Elements produce high quality water for small commercial systems. DOW FILMTEC TW30 2521 elements are tape wrapped. In addition to high quality water and low energy costs, DOW FILMTEC membranes also deliver savings by providing long lasting and reliable performance. DOW FILMTEC Brackish Water Reverse Osmosis Elements can separate salts from water and are produced





DOW FILMTEC™ XLE-2521 Low Energy Reverse Osmosis Membrane Element



DOW FILMTEC TW30-2521 Elements produce high quality water for small commercial systems. DOW FILMTEC TW30-2521 elements are tape-wrapped. In addition to high quality water and low energy costs, DOW FILMTEC membranes also deliver savings by providing long lasting and reliable performance.



DOW FILMTEC Brackish Water Reverse Osmosis Elements can separate salts from water and are produced with an automated fabrication process for precision, consistency, and reliability. DOW FILMTEC RO membranes build on a tradition of leadership in the thin-film composite membrane industry and meet the challenges of higher rejection in lower-pressure operations.



DOW FILMTEC XLE-2521 is FDA – 21 CFR 177.2550; Food and Drug Administration Compliant.



Specifications for XLE-2521



FilmTec Product:

XLE-2521


FilmTec Part Number:

154530
Size (Approximate): 2.5" Dia. x 21"L


Flow Rate:

365 gpd (1.38 m³/d)


Applied Pressure:

100 psig (6.9 bar)


Stabilized Salt Rejection:

99.0%


Active Surface Area:

13 Sq. Ft.


Single Element Recovery:

10%
Exterior:

Tape-Wrapped


Membrane Type:

Polyamide Thin-Film


Composite

Permeate flow and salt rejection based: 500 ppm NaCl feed stream, 77°F, 8% recovery, 100 psig.



Operating Limits for XLE-2521



Maximum Operating Temperature:

113°F (45°C)


Maximum Operating Pressure:

600 psig (41 bar)


Maximum Pressure Drop:

13 psig (0.9 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.



Related Products for use with XLE-2521

PV2521PVCAU

PVC Membrane Housing Pressure Vessel for 2.5" x 21" Membrane Element
PV2521SSAU-316

Stainless Steel Membrane Housing Pressure Vessel for 2.5" x 21" Membrane Element



Benefits of DOW FilmTec Commercial RO Membranes



  • Lower Operating Pressure reduces power consumption, lowering the cost of equipment and operation.


  • Reverse Osmosis water treatment removes up to 99% of total dissolved solids from water.


  • High flux results in high yields


  • High rejection provides good water quality


  • FilmTec performance and quality



Common Applications for FilmTec XLE-2521 Commercial RO Membranes:



  • Commercial Water Treatment Systems


  • Food Service


  • Medical and Research Institutions


  • Hospitality Industry



Physical Dimensions of DOW FilmTec XLE-2521

INCHES (MM)
A

21.0 (533)
B

1.19 (30)
C

0.75 (19)
D

2.4 (61)

XLE-2521 Fits nominal 25x21 size pressure vessels.

For more information, please visit this products webpage.
Shipping Notes
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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]
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SKU: 5168995954

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4.8 ★★★★★
Based on 16 reviews
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Product Reviews
E
Verified Purchase
Elizabeth Alfaro
Lowell, US
★★★★★ 4
American Bully Trial - Honest Review
Color: Cyan NylonFish
I have never gotten a toy that lasted more than an hour when it comes to my baby girl. She is an aggressive chewer and loves anything that squeaks. This definitely helped to keep her entertained and use her teeth. I can confidently say that this toy may last a long time but she has already ripped a piece from it. I didn’t expect anything less since she always knows how to test new toys lol. I would definitely recommend though and will be getting more for her once this one is gone. Thank you!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 2, 2024
K
Verified Purchase
keyjustice
Cuba, US
★★★★★ 3
Hard, heavy, sharp
Color: Cyan NylonFish
This is very durable, but it is also very heavy (our dog likes to throw her toys) and after some chewing, the head and tail are very sharp
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
B
Verified Purchase
BellaGi
Battle Creek, US
★★★★★ 5
2 years later and it’s still going!
Color: Cyan NylonFish, Color: Cyan NylonFish
I have 2 dogs, a 6lb chihuahua (Lolli) and an almost 100lb German shepherd/Belgian Malinois (Uzi). Got this for Uzi, however, Lolli had other plans for it. She literally took it out her mouth and ran to hide it. It’s been over a year, closer to 2 and it’s still hanging on. Attached a photo of Lolli…
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
S
Verified Purchase
steven casteel
Battle Creek, US
★★★★★ 5
Best found
Color: Cyan NylonFish
I have a heavy heavy chewer, the only things that has escaped him were items like "kong" solid and rubber but no squeaky. He quickly lost interest in the toy; largely within a week at most and never picks it up again unless really bored. Squeaky toys had a life shelf of a week at best, that is with us taking them away to "preserve" them for longer. So far, this toy, the fish, has been the longest surviving squeaky and the longest at keeping his interest. it has received some cosmetic damage, but nothing that would make you remove the toy from his possession and it STILL squeaks.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 20, 2024
C
Verified Purchase
Courtney
Birmingham, US
★★★★★ 4
Still holding up to my super-chewer!
Color: Cyan NylonFish, Color: Cyan NylonFish
It's a very good product. I would recommend this toy for a heavy chewing dog. My main reasons it's not 5 stars, it's HEAVY and the eyes peeled right off. My pup really likes to throw his toys around, this thing sounds like a cannon ball that's going to go through our floor! He also tries to destroy everything so he was chewing on the eyes and he would have definitely eaten them if I wasn't paying attention. It's not a horrible thing but I obviously don't want him to eat non food things. My dog also likes the squeaker in it, but it's difficult for me to get it to squeak. That's not a big deal though just thought I should mention it. Overall especially for the price, it's a good sturdy product that's cute and it's still holding up. He's chewed parts of the softer areas off a bit, but the rest is very hard so he hasn't made much of a dent. It's also about as big as his head, so he's pretty happy with it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 18, 2025

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