Datasheet summary
Low 2
Engineering summary from PDF text extraction for Low 2. Verify every value with the OEM datasheet.
Summary
Product identification
The Oltremare LOW2 series consists of low energy, very high rejection brackish water Reverse Osmosis (RO) elements. These elements deliver consistent, continuous high performance for high-quality water production and are available in standard 2.5”, 4”, and 8” spiral-wound designs.
The elements are suitable for producing drinking water, industrial water, pharmaceutical water, wastewater treatment, and the concentration of food and/or medicine.
Membrane Characteristics
- Membrane Type: Polyamide RO
- Stabilized Salt Rejection (%):
- 99.4 (b1) - for modules from 2514 to 4021
- 99.5 (b2) - for 4040 modules
- 99.65 (c1) - for LOW2-HR 4040 modules
- Minimum Salt Rejection (%):
- 99.0 (b1) - for modules from 2514 to 4021
- 99.3 (b2) - for 4040 modules
- 99.4 (c1) - for LOW2-HR 4040 modules
Design Information
Test conditions for permeate flow: 1,500 ppm NaCl, 10.3 bar (150 psi), 25°C (77°F), 10% recovery, pH 6.5 - 7, 30 minutes operation. Flow rates will be no more than 15% below the values shown.
| Model | Permeate Flow m³/day (gpd) | Maximum Feed Flow m³/h (gpm) | Membrane Area m² (ft²) | Feed Spacer Thickness (mil) |
|---|---|---|---|---|
| Oltremare LOW2 – 2514 | 0.5 (120) | 1.38 (6) | 0.6 (6) | 28 |
| Oltremare LOW2 – 2521 | 1.1 (280) | 1.38 (6) | 1.1 (12) | 28 |
| Oltremare LOW2 – 2540 | 2.1 (550) | 1.38 (6) | 2.6 (28) | 28 |
| Oltremare LOW2 – 4014 | 1.4 (370) | 2.72 (12) | 1.8 (19) | 28 |
| Oltremare LOW2 – 4021 | 3.29 (870) | 2.72 (12) | 3.2 (35) | 28 |
| Oltremare LOW2 – 4040 | 7.9 (2100) | 3.6 (16) | 7.9 (85) | 28 |
| Oltremare LOW2 -HR- 4040 | 7.2 (1900) | 3.6 (16) | 7.9 (85) | 28 |
Operating limits
- Maximum Operating Pressure:
- 41 bar (600 psi) for fiberglassed elements.
- 20.7 bar (300 psi) for tape wrapped elements.
- Maximum Operating Temperature: 45 °C (113 °F)
- Cleaning pH Range: 1.0 – 12.0
- Chlorine Tolerance: < 0.1 ppm. Pretreatment is recommended to remove free chlorine and other oxidizing agents.
- 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
Physical dimensions are provided below. Shipping weight is dependent on packaging material and quantity shipped. For male elements, Dimension “D” (protruding permeate tube) is 30.5 mm (1.2 in) for models from 2514 to 4021, and 26.7 mm (1.05 in) for 4040 models.
| Model | Element Weight kg (lb) | Dim. A mm (inches) | Dim. B mm (inches) | Dim. C mm (inches) | Permeate Tube |
|---|---|---|---|---|---|
| Oltremare LOW2 – 2514 | 0.45 (1) | 355.6 (14) | 61 (2.4) | 19.1 (0.75) | Male |
| Oltremare LOW2 – 2521 | 0.9 (2) | 533.4 (21) | 61 (2.4) | 19.1 (0.75) | Male |
| Oltremare LOW2 – 2540 | 1.8 (4) | 1016 (40) | 61 (2.4) | 19.1 (0.75) | Male |
| Oltremare LOW2 – 4014 | 1.4 (3) | 355.6 (14) | 100.3 (3.95) | 19.1 (0.75) | Male |
| Oltremare LOW2 – 4021 | 1.8 (4) | 533.4 (21) | 100.3 (3.95) | 19.1 (0.75) | Male |
| Oltremare LOW2 – 4040 | 3.6 (8) | 1016 (40) | 100.3 (3.95) | 19.1 (0.75) | Male |
| Oltremare LOW2 - HR – 4040 | 3.6 (8) | 1016 (40) | 100.3 (3.95) | 19.1 (0.75) | Male |
Important Information
- Start-up: Flush elements for 30 minutes at low pressure and discard permeate prior to operation. Refer to the Element Start-Up Guide – System Start-Up (TSG-O-005).
- Cleaning: Periodic cleaning is required to ensure proper operation and prevent membrane damage. Refer to the Membrane Cleaning Guide – Water Application Elements (TSG-C-001).
- Storage: Appropriate storage is necessary to ensure proper operation and prevent membrane damage. Refer to the Element Storage Guides (TSG-O-009 & TSG-O-01).
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, always refer to the specific 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.