4"x21" | 1,025 GPD | Low Energy | Tape Wrap | FilmTec Membrane
SKU: 89540922305

4"x21" | 1,025 GPD | Low Energy | Tape Wrap | FilmTec Membrane

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Description

4"x21" | 1,025 GPD | Low Energy | Tape Wrap | FilmTec MembraneDOW FILMTEC XLE 4021 Low Energy Reverse Osmosis Membrane Element DOW FILMTEC XLE 4021 Elements offer better system performance and economics for small commercial systems by operating at very low applied pressure. DOW FILMTEC XLE 4021 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





DOW FILMTEC™ XLE-4021 Low Energy Reverse Osmosis Membrane Element



DOW FILMTEC XLE-4021 Elements offer better system performance and economics for small commercial systems by operating at very low applied pressure. DOW FILMTEC XLE-4021 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-4021 is FDA – 21 CFR 177.2550; Food and Drug Administration Compliant.



Specifications for XLE-4021



FilmTec Product:

XLE-4021


FilmTec Part Number:

154540
Size (Approximate): 4" Dia. x 21"L


Flow Rate:

1,025 gpd (3.9 m³/d)


Applied Pressure:

100 psig (6.9 bar)


Stabilized Salt Rejection:

99.0%


Active Surface Area:

36 Sq. Ft.


Single Element Recovery:

8%


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-4021



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:

14 gpm (3.2m³/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-4021

PV4021SSAU-316 Stainless Steel Membrane Housing Pressure Vessel for 4" x 21" Membrane Element
PV4021PWG PVC Membrane Housing Pressure Vessel for 4" 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-4014 Commercial RO Membranes:



  • Commercial Water Treatment Systems


  • Food Service


  • Medical and Research Institutions


  • Hospitality Industry



Physical Dimensions of DOW FilmTec XLE-4014

INCHES (MM)
A

21.0 (533)
B

1.05 (27)
C

0.75 (19)
D

3.9 (99)

XLE-4021 Fits nominal 4x21 size pressure vessels.

For more information, please visit this products webpage.
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Exchange/Return Notes
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SKU: 89540922305

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beautiful draping and forgiving
Size: X-Large, Color: Navy Polka Dot
A beautiful dress. Well made. Fully lined. I don't know what they mean by front slit. There's no slit unless they meant there's a waist line. Fitted but true to size. There's a side zipper that helps get in and out of the dress. There's also a corset in the back that pulls any slack. I'm 5'5" and weigh 185 lbs. It's ankle length. The Drop makes good dresses. I bought the Crimson too and it's a beautiful red that makes everyone turn and gaze. There's another dress the Drop makes which is polka dot and same version in ivory. Beautiful draping and forgiving. I found these dresses when viewed at emanuela.moss@tiktok.
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Cute dress, just not for me.
Size: Medium, Color: Iceberg Linear Floral, Size: Medium, Color: Iceberg Linear Floral
5’4”, size 6/8. I bought a medium. The Good — the color is accurate, and the pattern is pretty in person. It’s fully lined, and The material doesn’t feel cheap. The Bad — the fit was just odd. I’m a 6/8 and reliably a medium, but the fit was so weird on me, that I’m not even sure what the problem was. I don’t know how a bust can be both too big and too small, but that’s what I felt like here! The length was also not good for me, but is accurate to the picture. I’m 5’4” and it hit right above the ankle bone. TLDR; the dress is nice, but the fit is bad on me.
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