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Product Details
The BW4040 4x40 RO membrane is manufactured according to widely adopted dimensional standards within the reverse osmosis industry. The element features a nominal 4 inch diameter and 40 inch length, allowing straightforward integration into compact RO assemblies and standardized water treatment equipment.
We supply this 4040 RO membrane for customers requiring interchangeable membrane components for OEM equipment manufacturing, maintenance replacement, and retrofit system integration. Under specified test conditions, the membrane delivers a stabilized salt rejection of 99.6%, a minimum rejection of 99.4%, and a nominal permeate flow of 2050 gpd (7.8 m³/d).
Standardized 4x40 Configuration
The BW4040 membrane element follows a widely adopted dimensional platform used throughout the RO industry. Its configuration supports compatibility with standard pressure vessels without requiring structural modification.
Compared with larger membrane formats, the BW4040 4x40 RO membrane is commonly selected for space-efficient RO equipment layouts where modular installation and flexible system arrangement are required.
Operational Characteristics
The BW4040 membrane provides repeatable desalination performance during routine operation under defined laboratory evaluation parameters. It maintains stable permeate production and controlled salt rejection within specified operating conditions.
Video Description
This video demonstrates a precision-controlled membrane winding line used in the automated production of reverse osmosis membrane elements. It covers membrane sheet handling, automatic rolling operations, component sealing, and element integration processes performed through automated equipment.
The footage highlights dimensional uniformity throughout production and provides a detailed view of standardized RO membrane manufacturing procedures.
Product Specifications
Model | Reverse Osmosis Membrane BW4040 |
Permeate Flow Rate | 2050 gpd (7.8 m³/d) |
Length | 1016 mm (40 in.) |
Diameter | 26.7 mm (1.05 in.) |
Inner Tube Diameter | 19 mm (0.75 in.) |
Weight | 3.5 kg |
Active Membrane Area ft2(m2) | 78 ft² (7.2 m²) |
Stabilized Salt Rejection % | 99.6 |
Minimum Salt Rejection % | 99.4 |
Maximum Operating Pressure | 41 bar (600 psi) |
Maximum Operating Temperature | 45°C (113°F) |
Filtration Characteristics
The BW4040 4x40 RO membrane uses reverse osmosis separation technology to remove dissolved substances at the molecular level. The membrane structure allows water molecules to pass through while reducing the passage of unwanted contaminants commonly present in feed water.
With filtration precision reaching approximately 0.0001 micron, the membrane can effectively separate a wide range of impurities during the desalination process. This supports improved permeate quality in compact reverse osmosis systems and standardized water treatment equipment.
The BW4040 membrane is commonly applied for the reduction of:
Dissolved salts
Colloidal particles
Microorganisms
Organic substances with molecular weight above 100
Its controlled separation performance supports applications requiring lower conductivity and reduced contaminant levels in the treated water stream.
FAQ
Q: What does the 4x40 designation represent?
A: It refers to the standard membrane size of approximately 4 inches in diameter and 40 inches in length.
Q: Can the membrane be chemically cleaned?
A: Yes. The membrane supports chemical cleaning within a pH range of 1–13 under controlled cleaning procedures.
Q: What operating temperature range is supported?
A: The maximum operating temperature is 45°C (113°F). Operating within specified temperature limits helps maintain membrane stability.
Q: What contaminants can the membrane reduce?
A: The membrane is capable of reducing dissolved salts, colloidal particles, microorganisms, and organic substances with molecular weight above 100.