Datasheet summary
Low 4 8040
Engineering summary from PDF text extraction for Low 4 8040. Verify every value with the OEM datasheet.
Summary
The Oltremare LOW4 series consists of extra low energy, brackish water reverse osmosis (RO) membrane elements designed for consistent and continuous high performance. These elements are used in producing drinking water and industrial water. Oltremare LOW4 elements are available in standard 2.5-inch, 4-inch, and 8-inch spiral-wound designs. The specific models detailed below are 8040 (8-inch diameter, 40-inch length) elements.
Membrane Characteristics
- Membrane Type: Polyamide RO
- Stabilized Salt Rejection: 99.2%
- Minimum Salt Rejection: 99.0%
Performance values are based on test conditions: 500 ppm NaCl, 6.9 bar (100 psi), 25 °C (77 °F), 15% recovery, pH 6.5 - 7, and 30 minutes operation. Flow rates will be no more than 15% below the values shown.
Design Information
| Model | Permeate Flow m³/day (gpd) | Maximum Feed Flow m³/h (gpm) | Membrane Area m² (ft²) | Feed Spacer Thickness (mil) |
|---|---|---|---|---|
| Oltremare LOW4 – 8040 | 45.4 (12000) | 17 (75) | 37.2 (400) | 28 |
| Oltremare LOW4G – 8040 | 45.4 (12000) | 17 (75) | 37.2 (400) | 34 |
| Oltremare LOW44 - 8040 | 50 (13200) | 17 (75) | 40.9 (440) | 28 |
Operating limits
- Maximum Operating Pressure: 41 bar (600 psi)
- Maximum Operating Temperature: 45 °C (113 °F)
- Cleaning pH Range: 1.0 – 12.0 (Refer to the Membrane Cleaning Guide for temperature and pH limits)
- Chlorine Tolerance: < 0.1 ppm (Pretreatment is recommended for the removal of free chlorine and other oxidizing agents to prevent damage; oxidation damage is excluded from warranty).
- Maximum Pressure Drop: 0.7 bar (10 psi) per element; 4 bar (60 psi) per housing
- Maximum SDI₁₅: 5.0
- Maximum Turbidity: 1 NTU
Mechanical / hydraulic
| Model | Element Weight kg (lb) | Dim. A mm (inches) | Dim. B mm (inches) | Dim. C mm (inches) | Permeate Tube |
|---|---|---|---|---|---|
| Oltremare LOW4 – 8040 | 16.4 (36) | 1016 (40) | 200 (7.89) | 28.6 (1.125) | Female |
| Oltremare LOW4G – 8040 | 16.4 (36) | 1016 (40) | 200 (7.89) | 28.6 (1.125) | Female |
| Oltremare LOW44 - 8040 | 16.4 (36) | 1016 (40) | 200 (7.89) | 28.6 (1.125) | Female |
Dim. C is the inner diameter for female elements. Shipping weight is dependent on packaging material and quantity shipped.
Important Information
- Start-up: It is recommended to flush elements for 30 minutes at low pressure and discard permeate during the flush prior to operation. Refer to the Element Start-Up Guide for further information.
- Cleaning: Oltremare membrane elements must be cleaned periodically to ensure proper operation and to prevent membrane damage. Refer to the Membrane Cleaning Guide for Water Application Elements.
- Storage: Oltremare membrane elements must be stored appropriately to ensure proper operation and to prevent membrane damage. Refer to Element Storage Guides.
Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the original PDF datasheet. For contractual data, please refer to the official OEM PDF revision used on your project.
Official datasheet (PDF)
Curated from selected public technical reference material for discovery and preliminary comparison. This summary is not a substitute for a current certified manufacturer datasheet. Verify revisions and design limits before use.