LG RO Membrane – BW 4040 R

Original price was: $460.00.Current price is: $419.00.


  • 4”x40” Hi Rejection Brackish Water Membrane.
  • 2500 gpd / 99.6% / 225 PSI.
  • Offers a combination of high rejection and reliability.
  • Suitable for high salinity brackish water.
  • FREE Delivery (regional areas excluded)*

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SKU: LG BW 4040 R Category: Tag:

LG RO Membrane, LG BW 4040 R Membrane, 4 inch x 40 inch Brackish Water Reverse Osmosis Membrane

LG BW 4040R RO membrane delivers high permeate flows and salt rejection at high salinity inlet water (up to 8000 ppm NaCl Salinity). 

LG BW 4040 R High Rejection BWRO membranes offer a combination of high rejection, reliability, and durability; suitable for high salinity brackish water and wastewater reuse application. 

It operates at (15.5 bar / 225 PSI) inlet feed water pressure.

LG Chem’s NanoH2O™ brackish water RO membranes serve various municipal and industrial applications and major utilities around the world. LG BWRO membranes, all incorporated with innovative Thin Film Nanocomposite (TFN) technology, are offered in industry standard configurations and can easily fit into existing and new RO plants.   

All LG BWRO membranes provide superior performance along with intrinsic anti-fouling property and are suitable for applications where consistent and reliable performance is a must.     

Product Specifications:

Stabilized Salt Rejection: 99.6%*
Minimum Salt Rejection: 99.3%
Permeate Flow: 2500 gpd (9.5 m³/day)*
Membrane Area: 85 ft².
Diameter / Length: 4 inch / 40 inch.
*Test conditions: 2000 mg/l NaCl, 15.5 bar (225 psi), 25 °C (77 °F), pH 7, recovery rate 15%.
*Pre-treatment must be used to protect the membrane (softener, antiscalant dosing pump, sand filter, carbon filter, 5 mic cartridge fitler ...etc).   

Compatible with reverse osmosis membrane types:*

LG BW 4040 R Membrane Element can be used as a replacement for the below membrane elements in your existing water treatment equipment.
Filmtec BW30-4040 / Lewabrane B085 FR 4040 / GE Desal AG4040 / Hydranautics CPA2-4040 / Hydranautics CPA5-LD-4040 / Toray TM710 / CSM RE4040-BE.
*Check the data sheet for each membrane.   

Operation Conditions:

Max. working pressure:  600 psi (4.14MPa)
Max. Feed water flow:  16 gpm (3.6 m3/h)
Max. Temperature of Feed water:  45℃
Max. Feed water SDI (15 mins):  5.
Max. Feed Water Total Hardness: 10 ppm (softener or antiscalant should be used).
pH Range of Feed water during Continuous Operation:  2~11
pH Range of Feed Water during Chemical Cleaning:  2~12
Residual chlorine Concentration of feed water <0.1ppm Max.
Pressure drop of single membrane element:  15psi (0.1MPa)     

Commercial Application:

- Drinking water.
- Softened water for homes, hotels, commercial laundries and car wash.
- Spot free rinse for window cleaning and solar panel cleaning
- Pure water for pharmaceuticals, laboratories, Hemodialysis and electronics
- Sterilisers and autoclaves.
- Chemical industry.
- Aquarium water treatment.
- Boiler and cooling towers make-up water.
- Pure water, boiler water replenishment, foodstuff processing, and pharmaceutical production. 

Manufactured by: LG Chem, Made in Korea (Assembled in China)

* We offer FREE Shipping within Australia, however we might charge you in case of remote areas.
If you are in a remote area, please contact us before buying this item,
Cant be send to a postal address (big item)

Technical Data Sheet 


Additional information

Weight 5.33 kg
Dimensions 109 × 13 × 12 cm


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