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What Does “8040” Mean?
In the RO membrane industry, the four-digit naming convention directly corresponds to the physical dimensions of the element:
“80”: Represents a nominal outer diameter of 8.0 inches (approx. 203.2 mm).
“40”: Represents a nominal length of 40 inches (approx. 1016 mm).
Description
☑ High Water Production Efficiency
Single-element output equals four 4040 membranes. Massively reduces membrane housings, pipelines and floor space for large-scale systems, cutting equipment investment.
☑ Low Operating Cost
Fewer membrane elements for equivalent water output, lowering pump energy consumption, cleaning chemical and replacement costs.
☑ Stable Water Quality
High salt rejection delivers consistent permeate conductivity, meeting standards for industrial pure water and drinking purified water.
Performance Parameters
| Model | 8040 |
| Effective Membrane Area | 400 ft² (37 m²) |
| Average Permeate Flow | 10,500 GPD (39.7 m³/day) |
| Salt Rejection | 99.7% |
| Max. Feed Water Flow | 80 GPM (18 m³/h) |
| Operating Pressure | 150 psi (1.03 MPa) |
| Max. Operating Pressure | 600 psi (4.2 MPa) |
| Max. Feed Water Temperature | 45°C |
| Max.inflow SDI15 | 5 |
| Free Chlorine Concentration | < 0.1 mg/L |
| Continuous Operating pH Range | 3–10 |
| Chemical Cleaning pH Range | 2–11 |
| Max. Pressure Drop per Membrane Element | 15 psi (0.1 MPa) |
Applications
- Industrial Pure & Ultrapure Water Production
Desalination for semiconductor electronics, boiler feed water in power plants, chemical manufacturing, and pharmaceuticals.
- Commercial & Municipal Water Projects
Bottled water plants, food & beverage processing, and municipal centralized water supply systems.
- Wastewater Reuse & Zero Liquid Discharge
Advanced treatment and resource recovery of wastewater in textile dyeing, electroplating, and coal chemical industries.
- Seawater & Brackish Water Desalination
Providing potable and industrial water for islands, coastal power plants, and highly alkaline regions.