4-inch Low-pressure Membrane Elements
JOZZON's 4-inch low-pressure series delivers high water production while minimizing operating costs. Utilizing fully automated winding technology, it ensures precise sealing and consistent performance. All elements feature fiberglass wound shells for enhanced pressure resistance, making them ideal for multi-element systems.
Product Overview
JOZZON's 4-inch low-pressure commercial membrane elements, including the standard 4040 model, are engineered to deliver high water production while minimizing total operating costs. From small commercial systems to industrial pretreatment applications, these elements can be flexibly configured to meet various requirements, such as high desalination, energy efficiency, or maximum water recovery.
All 4-inch elements feature a rugged fiberglass wound shell, offering better pressure resistance than traditional glued or taped alternatives. This robust construction prevents membrane telescoping under fluctuating operating conditions, delivers a longer service life with fewer failure risks, and supports stable performance even in systems with multiple membrane elements in series.
Whether you are designing a vending machine, a laboratory ultrapure water system, a hospital central water treatment unit, or a rural integrated water purification project, JOZZON's 4-inch low-pressure series provides the perfect balance of compact footprint, durability, and energy-saving efficiency.
Features & Benefit
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")