4-inch Low-pressure RO Membrane Elements
High-performance 4-inch RO membrane elements engineered for commercial, industrial, and small-to-medium water treatment systems, delivering excellent salt rejection, high water flux, and energy-efficient operation.
Compact RO Membranes for Efficient Water Treatment Systems
JOZZON 4-inch Low-pressure RO Membrane Elements are designed for commercial and light industrial water treatment systems where reliable performance, compact installation, and low operating costs are essential.
Available in the industry-standard 4040 size, these membrane elements combine optimized membrane chemistry, hydrophilic surface modification, and precision automated winding technology to provide stable water production, high salt rejection, and reduced operating pressure.
Unlike conventional membrane elements with glued housings, JOZZON’s fiberglass-wound shell offers superior mechanical strength, preventing membrane telescoping and ensuring long-term reliability in multi-element systems.
Typical applications include commercial drinking water equipment, laboratory water systems, hospital water purification, rural water supply, and industrial pretreatment systems.
Why Choose JOZZON 4-inch RO Membrane
1.High Water Flux
Optimized membrane structure and hydrophilic modification deliver higher flow at same pressure, reducing membrane count and initial investment.
2.Excellent Salt Rejection
Over 99% salt rejection effectively removes salts and contaminants, ensuring permeate quality and extending downstream system regeneration cycles.
3.Reduced Energy Consumption
Low-pressure drop design and high-hydrophilicity materials lower operating pressure by 15-30%, cutting electricity costs and enabling green production.
4.Stable Long-Term Performance
Excellent resistance to chemical degradation and compaction ensures slow flux decline, with a 3-5+ year service life and fewer cleaning/replacement needs.
5.Wide Feed Water Compatibility
Fouling-resistant, wide-channel design adapts to various water types (groundwater, reclaimed water, etc.), resisting fouling and reducing pretreatment requirements.
6.Easy System Integration
Standard industrial dimensions compatible with mainstream membrane housings and pipes enable quick drop-in replacement, short commissioning time, and easy maintenance.
Available Models
|
Membrane Element Model |
Effective Membrane Area ft2 (m2) |
Water Production Flow Rate GPD (m³/d) |
Stable Desalination Rate (%) |
Minimum Desalination Rate (%) |
|---|---|---|---|---|
| JRW-4040 |
90 (8.4) |
2400 (9.5) |
99.0 |
98.5 |
| JRW-4021 |
38 (3.5) |
1000 (3.8) |
99.0 |
98.0 |
Extreme Usage Conditions
| Maximum Operating Pressure | 600psi (4.14 MPa) |
| Maximum Influent Flow Rate | 16gpm (3.6 m³/h) |
| Maximum Inlet Water Temperature | 45℃ |
| Maximum Influent SDI15 | 5 |
| Influent Free Chlorine Concentration | < 0.1 ppm |
| Influent ph Range During Continuous Operation | 2～12 |
|
ph Range of Influent During Chemical Cleaning (Short-term 30-minute Period) |
1～13 |
| Maximum Pressure Drop of a Single Membrane Element | 15psi (0.1Mpa) |
Test Conditions
| Test Pressure | 150psi (1.03Mpa) |
| Test Solution Temperature | 25℃ |
| Test Solution Concentration (NaCl) | 1500ppm |
| ph Value of The Test Solution | 7.5 |
| Single Membrane Element Recovery Rate | 15%, 8% (4021) |
Membrane Element Size
The units in the diagram are millimeters (inches).
C=19.1mm (0.75″), D=26.7mm (1.05″)
C=19.1mm (0.75″), D=26.7mm (1.05″)
