4 Inch RO Membranes
- MDC Water carries 4 inch membrane in a wide variety of types to suit most applications including brackish water, seawater, low and ultra low pressure membranes. 4040 4×40 RO membranes and 4021 4×21 RO mebranes.
- We only work with trusted reverse osmosis membranes manufacturers:
- LANXESS (Germany): LANXESS has designed Lewabrane® RO membranes for state-of-the-art desalination of seawater, brackish waters, and low-salinity waters in industrial and potable water applications. Lewabrane Reverse Osmosis membrane elements are produced in a modern, fully automated, state-of-the-art production facility in Bitterfeld (Germany).
- DOW Filmtec (USA): The world leader in producing elements to demineralize brackish water, desalinate seawater and more. DOW Filmtec produces the most widely used RO and NF technologies in the world—trusted by municipalities, manufacturers of all types, small businesses and families wanting clean, healthy water.
4 Inch Brackish Water Reverse Osmosis Membranes
Our brackish water 4040 4×40 inch RO Membranes provide high permeate 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 200 and 260 PSI (13.7 – 18 bar).
- Sale!
B085 FR 4040 Membrane
$439.00Lewabrane RO B085 FR 4040 4”x40” Low Fouling Brackish Water RO Membrane 2,400 gpd / 99.5% / 225 PSI Provides the highest productivity and high salt rejection at hi salinity inlet water., Designed for water with a higher organic or biological fouling rate - Sale!
RO Membrane Vontron LP21-4040
$325.004”x40” 4040 Brackish Water RO Membrane 2400 gpd / 99.5% / 225 PSI Provides high permeate flow and high salt rejection at hi salinity inlet water Equivalent to Filmtec BW30-4040 - Sale!
LG RO Membrane – BW 4040 R
$399.00- 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.
- Sale!
Hydranautics CPA5-LD-4040
$425.00- 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.
Low Pressure Reverse Osmosis 4 Inch Membranes
Low Energy (LE type) and Low Pressure (LP) membrane elements are recommended for low-moderate salinity applications or/and in applications where low energy consumption is an important consideration.
The LE and LP elements are designed with a highly efficient polyamide membrane barrier layer, providing high flow productivity combined with excellent salt rejection.
Lanxess LE and Vontron ULP membrane elements are based on 150 PSI (10.3 bar) test working pressure.
Size: 4×40 and 4/21 inch RO membranes.
Ultra Low Pressure Reverse Osmosis 4 Inch Membranes (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.
Lanxess ULP and Vontron XLP membrane elements are based around 100-110 PSI (around 7 bar) test working pressure.
- Sale!
B085 LE 4040
$449.00Lewabrane RO B085 LE 4040 4”x40” Low Pressure Membrane 2,000 gpd / 99.5% / 150 PSI Recommended where low energy consumption is an important consideration -
Lewabrane RO B085 ULP 4040
Get a Quote Lewabrane RO B085 ULP 4040 4 inch x 40 inch Ultra Low Pressure ULP Membrane 2,150 gpd / 99.5% / 110 PSI Designed for Low Salinity Inlet Water to Operate at Ultra Low Pressure (7.8 bar / 110 PSI) - Sale!
Vontron ULP11-4040 Hi Flo
$325.004”x40” Hi Flow and Low Pressure Membrane 2,700 gpd / 98% / 150 PSI Recommended Where Hi Product Water Flow and Low Energy Consumption are needed - Sale!
Vontron XLP11-4040
$325.004”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) - Sale!
Vontron ULP21-4040 RO Membrane
$325.004”x40” 4040 Low Pressure Membrane 2400 gpd / 99% / 150 PSI Typical operating pressure of 150PSI (1050kPa) - Sale!
LG RO Membrane BW 4040 ES
$399.00- 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.
- Sale!
Vontron ULP21-4021
$255.004”x21” Low Pressure Membrane 950 gpd / 99% / 150 PSI Typical operating pressure of 150PSI (1050kPa)
Seawater Desalination 4 Inch RO Membranes
- Used for Seawater desalination systems.
- Marine and Maritime watermakers.
- Yacht and boat desalination units.
- Sale!
Hydranautics SWC5-LD-4040
$585.00Seawater Membrane Hydranautics SWC5-LD-4040 4”x40” Sea Water Membrane 1,750 gpd / 99.7% / 800 PSI Provides high productivity and high salt rejection. Equivalent to Filmtec SW30-4040* -
S085 HR 4040
$650.00Seawater Membrane Lewabrane RO S085 HR 4040 4”x40” High Rejection Sea Water Membrane 1,380 gpd / 99.8% / 800 PSI Provides the highest salt rejection and the best permeate water quality
4″ RO Membrane Housings
- Sale!
4″x40″ 4040 Membrane Pressure Vessel
$339.00300 PSI Membrane Housing For 4"x40" 4040 Membranes - Sale!
4″x40″ 4040 Seawater Membrane Housing
$790.001000 PSI Membrane Housing For Watermakers & Seawater Desalination - Sale!
4″x40″ Stainless Steel RO Membrane Housing
$235.00300 PSI End Clamp Membrane Pressure Vessel for 4″ x 40″ Membranes - Sale!
4″x21″ Stainless Steel RO Membrane Housing
$190.00300 PSI End Clamp Membrane Pressure Vessel for 4″ x 21″ Membranes
Competitive Reverse Osmosis Membranes Comparison Guide
Dow Filmtec / GE Desal / Hydranautics / Tory / CSM
| Lanxess | Dow Filmtec | GE Desal | Hydranautics | Toray | CSM |
| Lewabrane B085 HF 4040 | Dow Filmetc BW30-4040 | GE Desal AG4040FF | Hydranautics CPA2-4040 | Toray TM710 | CSM RE4040-BE |
| Lewabrane B085 LE 4040 | Dow Filmetc LE-4040 | Hydranautics ESPA2-LD-4040 | CSM RE4040-BLN | ||
| Lewabrane B085 FR 4040 | Hydranautics LFC3-LD-4040 | Toray TML10D | |||
| Lewabrane S085 HR 4040 | Dow Filmetc SW30-4040 | GE Desal SE4040FF | Hydranautics SWC1-4040 | Toray TM-810L | CSM RE4040-SHA |
| Lewabrane B400 HF | Dow Filmetc BW30-400 | GE Desal AG8040F400 | Hydranautics CPA3 | Toray TM720-400 | CSM RE8040-BE |
| Lewabrane B400 HR | Dow Filmetc BW30-400 | Hydranautics CPA5-LD | |||
| Lewabrane B400 FR | Dow Filmetc BW30-400FR | Hydranautics LFC3-LD-8040 | Toray TML20D-400 | CSM RE8040-FEn34 | |
| Lewabrane B400 LE | Dow Filmetc LE-400 | GE Desal AK8040F | Hydranautics ESPA | Toray TM820H-370 | CSM RE8040-BL |
| Lewabrane S400 HR | Dow Filmetc SW30HRLE–400 | Hydranautics SWC3 | Toray TM820H-400 | CSM RE8040-SH | |
| Lanxess | Dow Filmtec | GE / Desal | Hydranautics | Toray | CSM |
PS: this chart is a general guide only, please email us to source membranes for you or offer an alternative that is currently stocked
Australian Supplier of high quality industrial 4 inch and 8 inch reverse osmosis membranes, RO membrane replacement.
Free Delivery Australia wide, Fast delivery to New Zealand and worldwide (Check with us for shipping cost)
Lewabrane® RO B085HF 4040 / Lewabrane® RO B085FR 4040 / Lewabrane® RO B085LE 4040 / Lewabrane® RO S085HF / Lewabrane® RO S085HR / Lewabrane® RO B400FR ASD / Lewabrane® RO B400HF / Lewabrane® RO B400LE / Lewabrane® RO B400HR / Lewabrane® is a registered trademark of LANXESS Deutschland GmbH, Germany.