Datasheet summary
Low 4 XL
Engineering summary from PDF text extraction for Low 4 XL. Verify every value with the OEM datasheet.
Summary
Product Identification
The LOW4 XL series comprises brackish water reverse osmosis (RO) elements designed for extra area, extra low energy consumption, and excellent productivity. This family of membranes combines low energy and high flow element performances with an active surface area previously unreached by 4″ elements, utilizing a standard 4″ spacer.
Membrane Characteristics
- Membrane Type: Polyamide
- Stabilized Salt Rejection:
- 99% (for Oltremare LOW4 – 4014 - XL and Oltremare LOW4 - 4021 – XL)
- 99.1% (for Oltremare LOW4 - 4040 - XL)
- Minimum Salt Rejection:
- 98% (for Oltremare LOW4 – 4014 - XL and Oltremare LOW4 - 4021 – XL)
- 99% (for Oltremare LOW4 - 4040 - XL)
Design Information
Test conditions for permeate flow: 500 ppm NaCl, 6.9 bar (100 psi), 25°C (77°F), 15% recovery, pH 6.5 - 7, 30 minutes operation. Flow rates will be no more than 15% below the values shown.
| Product Model | Permeate Flow m³/day (gpd) | Maximum Feed Flow m³/h (gpm) | Membrane Area m² (ft²) | Feed Spacer Thickness (mil) |
|---|---|---|---|---|
| Oltremare LOW4 – 4014 - XL | 2.65 (700) | 2.72 (12) | 2.3 (25) | 28 |
| Oltremare LOW4 - 4021 – XL | 4.92 (1300) | 2.72 (12) | 4.2 (45) | 28 |
| Oltremare LOW4 - 4040 - XL | 11.7 (3100) | 3.6 (16) | 9.8 (105) | 28 |
Operating Limits
- Maximum Operating Pressure: 20.7 bar (300 psi)
- Maximum Operating Temperature: 45 °C (113 °F)
- Cleaning pH Range: 1.0 – 12.0
- Maximum Pressure Drop: 0.7 bar (10 psi) per element; 4 bar (60 psi) per housing
Feed Water
- Chlorine Tolerance: < 0.1 ppm
- Note: Pretreatment is recommended for the removal of free chlorine and other oxidizing agents to prevent damage to membranes. Oxidizing agents, such as free chlorine, in contact with polyamide membranes may result in shortened operating life or membrane failure. Such oxidation damage is excluded from warranty.
- Maximum SDI₁₅: 5.0
- Maximum Turbidity: 1 NTU
Mechanical / Hydraulic
Permeate tube type is male, with Dimension “D” (protruding permeate tube) being 30.5 mm (1.2 in) for modules 4014-XL and 4021-XL, and 26.7 mm (1.05 in) for module 4040-XL.
| Product Model | Element Weight kg (lb) | Dim. A mm (inches) | Dim. B mm (inches) | Dim. C mm (inches) |
|---|---|---|---|---|
| Oltremare LOW4 – 4014 - XL | 1.4 (3) | 355.6 (14) | 100.3 (3.95) | 19.1 (0.75) |
| Oltremare LOW4 - 4021 – XL | 1.8 (4) | 533.4 (21) | 100.3 (3.95) | 19.1 (0.75) |
| Oltremare LOW4 - 4040 - XL | 3.6 (8) | 1016 (40) | 100.3 (3.95) | 19.1 (0.75) |
Important Information
- Start-up: Flush elements for 30 minutes at low pressure and discard permeate during the flush prior to operation.
- Cleaning: Elements must be cleaned periodically to ensure proper operation and prevent membrane damage. Refer to the Membrane Cleaning Guide – Water Application Elements (TSG-C-001).
- Storage: Elements must be stored appropriately to ensure proper operation and prevent membrane damage. Refer to 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 OEM PDF. For contractual data, always refer to the specific OEM PDF revision used on the 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.