Datasheet summary
4641
Engineering summary from PDF text extraction for 4641. Verify every value with the OEM datasheet.
Summary
Product Identification
The 4641 series comprises brackish water Reverse Osmosis (RO) elements, specifically the Oltremare 4.6" models. These elements are designed for water purification applications, providing high-quality water for sanitary uses, drinking water, and other purposes. They are available as either wet or dry products.
Membrane Characteristics
- Membrane Type: Polyamide
- Stabilized Salt Rejection:
- Oltremare LOW1: 99.1%
- Oltremare LOW2: 99.4%
- Oltremare LOW3: 98.6%
- Oltremare LOW4: 99.2%
- Minimum Salt Rejection:
- Oltremare LOW1: 98.5%
- Oltremare LOW2: 99.9%
- Oltremare LOW3: 97%
- Oltremare LOW4: 99.0%
Design Information
| Model | Permeate Flow m³/day (gpd) | Maximum Feed Flow m³/h (gpm) | Membrane Area m² (ft²) |
|---|---|---|---|
| Oltremare LOW1 – 4641 | 13.6 (3600) | 4.1 (18) | 11.2 (120) |
| Oltremare LOW2 – 4641 | 19.7 (5200) | 4.1 (18) | 11.2 (120) |
| Oltremare LOW3 – 4641 | 15.9 (4200) | 4.1 (18) | 11.2 (120) |
| Oltremare LOW4 – 4641 | 12.9 (3400) | 4.1 (18) | 11.2 (120) |
Operating Limits
- Maximum Operating Pressure: 41 bar (600 psi) for fiberglassed elements
- Maximum Operating Temperature: 45 °C (113 °F)
- Cleaning pH Range: 1.0 – 12.0
- Chlorine Tolerance: < 0.1 ppm (Pretreatment is recommended for removal of free chlorine and other oxidizing agents to prevent damage to membranes. 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
Test Conditions (for permeate flow ratings)
- Oltremare LOW1: 1,500 ppm NaCl, 10.3 bar (150 psi), 25°C (77°F), 15% recovery, pH 8.0, 30 minutes operation.
- Oltremare LOW2: 1,500 ppm NaCl, 15.5 bar (225 psi), 25°C (77°F), 15% recovery, pH 8.0, 30 minutes operation.
- Oltremare LOW4: 500 ppm NaCl, 6.9 bar (100 psi), 25°C (77°F), 15% recovery, pH 8.0, 30 minutes operation.
- Flow rates will be no more than 15% below the values shown. Product specifications may change without notice.
Mechanical / Hydraulic
| Model | Element Weight kg (lb) | Dim. A mm (inches) | Dim. B mm (inches) | Dim. C mm (inches) | Permeate Tube |
|---|---|---|---|---|---|
| Oltremare LOW1 – 4641 | 5 (11) | 1049 (41.3) | 116.8 (4.6) | 19.1 (0.75) | Male |
| Oltremare LOW2 – 4641 | 5 (11) | 1049 (41.3) | 116.8 (4.6) | 19.1 (0.75) | Male |
| Oltremare LOW3 – 4641 | 5 (11) | 1049 (41.3) | 116.8 (4.6) | 19.1 (0.75) | Male |
| Oltremare LOW4 – 4641 | 5 (11) | 1049 (41.3) | 116.8 (4.6) | 19.1 (0.75) | Male |
- Shipping weight is dependent on packaging material and quantity shipped.
- For male elements, "C" is the outer diameter.
- Male elements have a protruding permeate tube. Dimension "D" (not listed in table) is 0 mm on one plugged side and 55.6 mm (2.19 in) on the other side.
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) for more details.
- Cleaning: Oltremare membrane elements require periodic cleaning to ensure proper operation and prevent membrane damage. Refer to the Membrane Cleaning Guide – Water Application Elements (TSG-C-001).
- Storage: Oltremare membrane elements must be stored appropriately to ensure proper operation and prevent membrane damage. Refer to Element Storage Guides (TSG-O-009 & TSG-O-01).
- Customizable elements: MANN+HUMMEL offers a full range of membranes and element designs for challenging water and process applications, including low-fouling RO, submerged UF, continuous high temperature, ultra-high pressure, and unique sanitary designs.
Disclaimer: This summary is based solely on the provided text extract. It may not include all figures, footnotes, or the latest revisions found in the official OEM PDF datasheet. For contractual data, please 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.