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Ozmosis BW-4040 Reverse Osmosis Membrane 4″x40″, Brackish Water Desalination, 99.6% Salt Rejection, Energy Efficient, Made with Premium Fiberglass Material for Home and Commercial Use

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Ozmosis Brand 4″ x 40″ Brackish Water Membrane
Optimal Pressure 225 PSI
Its Average GPD is 2500
Salt Rejection Rate is 99.6%
Effective membrane area 85 ft

Product Overview:

Ozmosis BW-4040 Reverse Osmosis Brackish Water Membrane, this advanced technology delivers cleaner, higher quality water. It comes with 2500 GPD capacity,225 psi and 99.6% salt rejection, which means that this will generate more water of higher quality while using less energy when compared to similar membranes. This Ozmosis BW-4040 Reverse Osmosis membrane is utilized for multiple applications. Fits all standards 4” x 40” membrane housings stainless steel, PVC, or fiberglass.It has a Maximum Pressure of 600 psi, Salt rejection of 99.6%, a recovery rate of 15%, and Effective membrane area of 85 ft. Max.inflow temperature 45℃, Max.inflow 5 SDI, Max. water flow 15 GPM. Free chlorine concentration: <0.1, Continuous running PH: 3-10, Chemical cleaning PH: 2-11. Test water concentration: 2000 ppm; test PH: 7.5. Maximum pressure drop per element: 15 psi. This membrane is made with premium quality Toray membrane sheets.

Product Features:

ANALYTICAL CAPABILITIES:  This product’s responsibilities include improving water quality by removing impurities, offering a trustworthy source of clean water, and assisting in the overall efficiency of a reverse osmosis water purification system in a variety of settings.

DUTIES RELATED TO THIS PRODUCT: The Ozmosis BW-4040 RO Reverse Osmosis Membrane reduces the worries of customers by providing cleaner, safer, and better-tasting water, lowering energy and water costs, prolonging the life of appliances, and supporting a variety of applications.

MULTIPLE APPLICATIONS: This product serves a variety of purposes and it is very flexible. In addition to providing clean drinking water for homes, it improves the water quality in commercial settings, helps with spot-free car washing, makes sure that agriculture is effective and supports industrial processes as well.

LOW-MAINTENANCE: The membrane’s durability and low maintenance requirements help to lower the overall cost of maintenance. Meanwhile, the BW-4040 membrane’s minimal maintenance features are a result of its durable design, effective filtering and chemical cleaning ability.

ENVIRONMENTAL SUSTAINABILITY: This RO Membrane prioritizes sustainability in material sourcing and manufacturing. Moreover, it utilizes renewable energy and minimizes waste, ensuring everyone receives leading performance while contributing to a greener future.

LONG-LASTING QUALITY: Made with premium Toray brand sheets, renowned for their durability, and Dow glue, ensuring a reliable seal. Enjoy years of dependable filtration.

The Ozmosis BW-4040 Reverse Osmosis Brackish Water Membrane is an excellent alternative for a dependable and effective water filtering system. This advanced membrane surpasses expectations by delivering superior filtration with lower energy consumption. Perfect for residential and commercial applications, the Ozmosis BW-4040 ensures peace of mind with its long-lasting durability. Experience noticeably improved water quality, with a salt rejection rate of up to 99.6% of dissolved solids and impurities. Its operation makes it an economical choice for reducing your water filtration energy costs.

Additional information





Average Production

2500 GPD


Toray brand sheets and fiberglass-wound housing

Optimal Pressure

225 PSI

Max Pressure

600 PSI

Salt rejection

99.6 %

Recovery rate


Continuous running water PH range


Effective membrane area

85 ft

Chemical Cleaning PH


Max. Pressure Drop for Each Element

15 PSI


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