CSM RE4040-BLN RO Membrane
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Estimated Delivery:Oct 24 - Oct 28
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Next Day Dispatch
CSM RE4040-BLN RO Membrane
CSM RE4040-BLN Low Pressure RO Membrane
High-Performance Low Pressure 4" × 40" Reverse Osmosis Membrane
CSM RE4040-BLN is a high flow, low-pressure reverse osmosis membrane designed for commercial and industrial water purification applications.
Manufactured by Toray Advanced Materials Korea under the CSM membrane brand, this 4 inch RO membrane delivers excellent salt rejection and high permeate flow while operating at lower pressures to help reduce energy consumption.
Specifications
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Parameter |
CSM RE4040-BLN |
|---|---|
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Permeate flow |
2,600 GPD (9.8 m³/day) |
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Nominal salt rejection |
99.4% |
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Minimum salt rejection |
99.3% |
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Membrane area |
85 ft² (7.9 m²) |
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Test pressure |
150 psi (10.3 bar) |
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Test salinity |
1,500 ppm NaCl |
| Maximum feed water TDS | 3,000 ppm NaCl |
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Maximum temperature |
45°C |
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Certification |
NSF/ANSI/CAN 61 |
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Permeate flow and rejection ratings are based on manufacturer test conditions. Actual performance varies with feed-water quality, operating pressure, temperature and recovery rate.
- Pre-treatment must be used to protect the membrane (softener, antiscalant dosing pump, sand filter, carbon filter, 5 mic cartridge fitler ...etc).
About CSM
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CSM is a leading membrane brand manufactured by Toray Advanced Materials Korea, with decades of experience in membrane technology since 1994.
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CSM specialises in high-performance Reverse Osmosis (RO), Nanofiltration (NF) and Ultrafiltration (UF) membranes for residential, commercial and industrial water treatment applications.
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Known for their quality, reliability and advanced technology, CSM membranes are widely used in water purification, seawater desalination, ultrapure water production and wastewater recycling worldwide.
Features and Benefits
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Low Pressure Operation: Designed to operate efficiently at lower feed pressures, reducing energy requirements.
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High Permeate Flow: Produces up to 2,600 GPD (9.8 m³/day) under standard test conditions.
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Excellent Salt Rejection: Nominal 99.4% NaCl rejection for reliable water purification.
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Energy Efficient: Helps reduce operating costs compared with conventional higher-pressure RO membranes.
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Standard 4040 Size: Suitable for compatible 4" x 40" commercial and industrial RO membrane housings.
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Reliable Performance: Designed for consistent water quality and efficient operation..
- Manufactured by Toray Advanced Materials Korea – CSM reverse osmosis membrane technology.
- NSF/ANSI/CAN 61 certification – as indicated in the manufacturer’s product literature.
Typical Applications
The CSM RE4040-BLN membrane is suitable for a variety of water treatment applications, including:
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Drinking water.
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Commercial reverse osmosis water purification systems
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Industrial process water treatment
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Brackish groundwater desalination
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Boiler feed-water pretreatment
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Water treatment for manufacturing facilities
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Food and beverage process-water preparation
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Water purification for agricultural and irrigation applications
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Replacement membranes for compatible 4040 RO systems
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Pure water for pharmaceuticals, laboratories, Hemodialysis and electronics
Operating Limits – CSM RE4040-BLN
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Parameter |
Operating Limit |
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Maximum Pressure Drop per Element |
15 psi (0.10 MPa) |
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Maximum Pressure Drop per 240" Vessel |
60 psi (0.41 MPa) |
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Maximum Operating Pressure |
600 psi (4.14 MPa) |
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Maximum Feed Flow Rate |
18 GPM (4.09 m³/h) |
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Minimum Concentrate Flow Rate |
4 GPM (0.91 m³/h) |
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Maximum Operating Temperature |
45°C (113°F) |
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Operating pH Range |
2.0–11.0 |
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CIP Cleaning pH Range |
1.0–13.0 |
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Maximum Feed Water Turbidity |
1.0 NTU |
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Maximum SDI (15 minutes) |
5.0 |
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Maximum Free Chlorine Concentration |
<0.1 mg/L |
Download CSM RE4040-BLN Data Sheet
Alternative 4040 Reverse Osmosis Membranes
The CSM RE4040-BLN is a high-rejection, 4" × 40" brackish water reverse osmosis membrane.
Depending on the existing RO system design and operating conditions, it is considered as an alternative to:
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DuPont (DOW): FilmTec XLE-4040 / XLE PRO-4040
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Hydranautics: ESPA Series, ESPA1-LD-4040, ESPA2-LD-4040, ESPA4-LD-4040
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Toray: TMG10D
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LG BW 4040 ES
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GE Osmonics / SUEZ: SUEZ AG-85 P LE 4040 (formerly LewaBrane B085 LE 4040), SUEZ AG4040C
- Vontron ULP21-4040
Important: These models are potential alternatives. Permeate flow, salt rejection, operating pressure and physical connections may differ. Please check the manufacturer's datasheets and confirm compatibility before ordering.
MDC Water can assist with membrane selection and replacement compatibility for commercial and industrial RO systems.
Discover more in our FAQ
What types of industrial water treatment products do you offer?
We offer a comprehensive range of industrial water treatment solutions, including:
Filtration Systems – Effectively removes sediment, chlorine, and other impurities to enhance water purity and system longevity.
Reverse Osmosis Membranes – High-performance purification technology that eliminates dissolved solids, contaminants, and impurities for ultra-pure water.
Membrane Housings – Durable, high-pressure enclosures engineered to protect and optimize the performance of RO membranes.
Filter Cartridges – Precision-engineered sediment, carbon, and specialty filters designed to target specific contaminants for enhanced water treatment efficiency.
Chemical Dosing Systems – Precise chemical treatment for water.
Media FRP Pressure Vessels – High-pressure tanks for filtration media.
Ion Exchange Resins – Softening and demineralization solutions.
Water Instruments – pH meters, conductivity meters, and TDS testers.
Rotameter Flow Meters – Accurate flow measurement devices.
Watermaker Parts – Spare parts for marine and industrial watermakers.
Water Quality Test Kits – Portable and lab testing solutions.
How do I know which product is right for my application?
Choosing the right product depends on:
Water quality parameters (TDS, pH, hardness, contaminants)
Flow rate and pressure requirements
Industry-specific needs (food processing, pharmaceuticals, HVAC, etc.)
If you’re unsure, our technical support team can help you select the best solution.
Do you offer bulk pricing for large industrial orders?
Yes! We provide bulk discounts and custom pricing for high-volume orders. Contact us for a personalized quote.
How long does shipping take?
Shipping times depend on location and stock availability. Standard delivery is 3–7 business days for most regions. Expedited shipping options are available upon request.
What is your return policy?
We offer a 14-day return policy from the date of delivery. If you are not completely satisfied with your purchase, you can return the item for a refund or exchange, provided it meets our return conditions.
What happens if I receive a damaged or incorrect item?
If your item arrives damaged or you receive the wrong product, please contact us immediately at support@waterfilter.net.au with photos and your order number. We will send a replacement or issue a refund as per our return policy..
How long does shipping take?
Shipping times depend on location and stock availability. Standard delivery is 3–7 business days for most regions.
Expedited shipping options are available upon request.
Do you ship internationally?
Yes, we offer international shipping for most of our industrial water treatment products. Contact us for custom shipping quotes and lead times.