4-inch-ro-membranes

4 inch RO Membranes

4 inch reverse osmosis membranes are designed for commercial and light industrial applications, offering high efficiency and excellent salt rejection. Available in 4" x 21" and 4" x 40" sizes, and in different types to suit all applications, including brackish water, seawater, and low-pressure systems.

4 Inch Reverse Osmosis Membranes For Brackish Water

Our brackish water 4040 4×40 inch RO Membranes provide high product water flows and salt rejection at high salinity inlet water (up to 8,000 ppm NaCl Salinity).
Brackish water RO Membranes are the best balance of flow and salt rejection.
Working pressure between 175 and 260 PSI (12 – 18 bar).

-8%

LG RO Membrane - BW 4040 R

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

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 (up to 8,000 ppm TDS - NaCl)

$419.00

$419.00 ~~$460.00~~

-8%

Revese Osmosis Membrane Vontron LP21-4040

Brackish Water Reverse Osmosis Membrane - Vontron LP21-4040, 4 inch x 40 inch

4”x40” 4040 Brackish Water RO Membrane.

Flow 2400 gpd / Salt Rejection 99.5% / Pressure 225 PSI.

Provides high permeate flow and high salt rejection at hi salinity inlet water.

$365.00

$365.00 ~~$400.00~~

-13%

Hydranautics CPA5-LD-4040 Reverse Osmosis Membrane

Hydranautics CPA5-LD-4040, 4 inch x 40 inch Brackish Water RO Membrane

4”x40” Hi Rejection Brackish Water Membrane.
2100 gpd / 99.7% / 225 PSI.
Offers a combination of high rejection and reliability.
Suitable for high salinity brackish water.
Made in JAPAN

$518.00

$518.00 ~~$600.00~~

-10%

FilmTec BW30 PRO-4040 - 4" x 40" Brackish Water Membrane

FilmTec BW30 PRO 4040 Membrane, 4 inch x 40 inch Reverse Osmosis Membrane

Fouling resistant RO membrane.
High Rejection and High Performance Brackish Water RO Membrane.
Flow 2,600 gpd / Salt Rej 99.7% / Pressure 225 PSI.
Suitable for high salinity brackish water.

$520.00

$520.00 ~~$580.00~~

Low Pressure Reverse Osmosis 4 Inch Membranes

4″ Low Energy, Energy Saving (ES), and Ultra Low Pressure (ULP) membrane elements are designed for low to moderate salinity feed water applications (with inlet TDS up to 2,000 ppm NaCl). Low-pressure membrane elements are rated for a test working pressure of 150 PSI (10.3 bar).
4 Inch Extra Low energy Reverse Osmosis Membranes (4″ Extreme Low Pressure) They are designed for low salinity water to operate at ultra low pressure. These membrane elements are based around 100-110 PSI (around 7 bar) test working pressure, please check each membrane details below
Available Sizes: 4″ x 40″ and 4″ x 21″

-8%

LG RO Membrane BW 4040 ES

LG Reverse Osmosis Membrane, BW 4040 ES Element,

4”x40” Low Pressure Brackish Water Membrane.
2500 gpd / 99.5% / 150 PSI.
high permeability at low feed pressure.
Suitable for low to medium salinity brackish water.
FREE Delivery (regional areas excluded)*

$419.00

$419.00 ~~$460.00~~

-8%

Vontron ULP21-4040 RO Membrane

Commercial 4 inch x 40 inch Low Pressure Reverse Osmosis Membrane

4”x40” 4040 Low Pressure Membrane

2400 gpd / 99% / 150 PSI

Typical operating pressure of 150PSI (1050kPa)

$365.00

$365.00 ~~$400.00~~

-8%

Vontron ULP11-4040 Hi Flow

Vontron ULP11-4040, 4 inch x 40 inch High Flow & Low Pressure Reverse Osmosis Membrane

4”x40” Hi Flow and Low Energy Membrane

2,700 gpd / 98% / 150 PSI

Recommended Where Hi Product Water Flow and Low Energy Consumption are needed

$365.00

$365.00 ~~$400.00~~

-8%

Vontron XLP11-4040

Vontron XLP11-4040, 4 inch x 40 inch Extremely Low Pressure Reverse Osmosis Membrane

4”x40” Extremely Low Pressure Membrane

2,000 gpd / 98% / 100 PSI

Designed for Low Salinity Inlet Water to Operate at Ultra Low Pressure (6.9 bar / 100 PSI)

$365.00

$365.00 ~~$400.00~~

-23%

Vontron ULP21-4021 Reverse Osmosis Membrane

Vontron ULP21-4021, 4 inch x 21 inch Low Pressure Reverse Osmosis Membrane

4”x21” Low Energy RO Membrane.

950 gpd / 99% / 150 PSI.

Typical operating pressure of 150PSI (1050kPa).

Vontron ULP21-4021 ultra low pressure membrane delivers high permeate flows and salt rejection at lower raw water pressures, compared to regular low-pressure membrane elements. The high salt rejection and low working pressure result in up to 30% lower energy consumption compared to standard elements.

$269.00

$269.00 ~~$350.00~~

4 Inch Ultra Low Pressure Reverse Osmosis Membranes (4″ Extreme Low Pressure)

They are designed for low salinity water to operate at ultra low pressure (ULP). The high permeability results in up to 40% lower energy consumption compared to standard elements.
These membrane elements are based around 100-110 PSI (around 7 bar) test working pressure, please check each membrane details below