SKU: 82397697087

2.5"x21" | 325 GPD | Tape Wrapped | DOW FilmTec RO Membrane

$114.10 $126.78
Save 10%
No.2 Bestseller on 2pierres.com >

Pay in installments of $31.70 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 19 - Sep 24

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

2.5"x21" | 325 GPD | Tape Wrapped | DOW FilmTec RO MembraneDOW FILMTEC TW30 2521 Brackish Water 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





DOW FILMTEC™ TW30-2521 Brackish Water 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 TW30-2521 is FDA – 21 CFR 177.2550; Food and Drug Administration Compliant.



Specifications for TW30-2521



FilmTec Product:

TW30-2521


FilmTec Part Number:		 80641
Size (Approximate): 2.5" Dia. x 21"L


Flow Rate:

325 gpd (1.23 m³/d)


Applied Pressure:

225 psig (15.5 bar)


Stabilized Salt Rejection:

99.5%


Active Surface Area:

13 Sq. Ft.


Single Element Recovery:

5%


Exterior:

Tape-Wrapped


Membrane Type:

Polyamide Thin-Film


Composite

Permeate flow and salt rejection based: 2,000 ppm NaCl feed stream, 77°F, 8% recovery, 225 psig.



Operating Limits for TW30-2521



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:

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 TW30-2521

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



  • 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 TW30-2521 Commercial RO Membranes:



  • Commercial Water Treatment Systems


  • Food Service


  • Medical and Research Institutions


  • Hospitality Industry



Physical Dimensions of DOW FilmTec TW30-2521

INCHES (MM)
A

21.0 (533)
B

1.19 (30)
C

0.75 (19)
D

2.4 (61)

TW30-2521 Fits nominal 25x21 size pressure vessels.

For more information, please visit this products webpage.
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: 82397697087

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.4 ★★★★★
Based on 21 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
B
Verified Purchase
Burtons
San Leandro, US
★★★★★ 5
Foam/froth galore
Style: No Stand, Color: Black
This frother can't be stopped from making froth/foam. It must go 2-3 times faster than my previous one. Easy touseand to clean.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
N
Verified Purchase
Nathalie Mondesir
Waukegan, US
★★★★★ 5
Powerful & Convenient Mini Milk Frother
Style: No Stand, Color: Black
This mini milk frother is a great little kitchen tool for coffee lovers. It creates rich, creamy foam in seconds and works well for lattes, cappuccinos, matcha, hot chocolate, and protein drinks. The lightweight design makes it easy to handle, and the stainless steel whisk is durable and simple to clean. For a battery-powered frother, it delivers impressive mixing power and is perfect for everyday use at home or on the go. Highly recommended for anyone who enjoys café-style drinks without the extra cost.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
K
Verified Purchase
katie
Lowell, US
★★★★★ 5
a Kitchen must have
Style: No Stand, Color: Black
This thing is a great little gizmo. Work ls like a champ, easy to clean and. Powerful enough to mix up protein powder drinks with ease
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 8, 2026
G
Verified Purchase
GK
Pawtucket, US
★★★★★ 4
Good Frother with Minor Drawbacks
Style: No Stand, Color: Galaxy
This handheld milk frother is a solid option overall and does a good job for everyday use. It produces foam fairly quickly and works well for lattes, cappuccinos, and other coffee drinks. While it isn’t quite as powerful as some other frothers I’ve used in the past, it still gets the job done with a little extra time. One thing to note is that you do have to hold the power button down continuously while using it. It’s not a dealbreaker, but it would be more convenient if it had a one-touch or locking button so you didn’t have to keep pressure on it the whole time. The frother is lightweight, easy to handle, and simple to clean, which I appreciate. It feels decent in quality and works consistently once you get the hang of it. For the price, it offers good value and is perfectly fine for daily home coffee drinks. Overall, this is a good frother with a couple of small inconveniences. I’m giving it four stars because it performs well enough for regular use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 17, 2025
N
Verified Purchase
Nick Solovyev
Lake Worth, US
★★★★★ 5
Still going strong
Style: No Stand, Color: Black
Had it for about a year, still works and works well. A fast milk frother, takes a couple of seconds to stir or froth up your drink. I enjoy that it is small and easy to store. Easy to clean. I would recommend, especially if you don't want it to take up too much space.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026

recommand products

One Beautiful Spring Day TPB
49.99
Marvel X-Men 90s Squad Grey T-Shirt LG
19.99
Hip Hop Family Tree Graphic Novel Volume 02
27.99
D20 DnD RPG Die: Liquid Infused - Metallic Purple
30.00
Edge Of Spider-Verse #1 (Of 5) 10 Copy Variant Edition Ramos Design Variant
12.00