Datasheet summary
ESPA-4641
Engineering summary from PDF text extraction for ESPA-4641. Verify every value with the OEM datasheet.
Summary
Product identification
- Membrane Element: ESPA - 4641
- Configuration: Spiral Wound
- Membrane Polymer: Composite Polyamide
- Membrane Active Area: 120 ft²
Performance
- Permeate Flow: 3600 gpd (13.6 m³/d)
- Salt Rejection: 99.4 % (97.5% minimum)
Operating limits
- Maximum Applied Pressure: 300 psig (2.1 MPa)
- Maximum Chlorine Concentration: < 0.1 PPM
- Maximum Operating Temperature: 113° F (45°C)
- pH Range; Continuous (Cleaning): 3.0 –10.0
- Maximum Feedwater Turbidity: 1.0 NTU
- Maximum Feedwater SDI (15 mins): 4.0
- Maximum Feed Flow: 18 GPM (3.0 m³/h)
- Minimum Ratio of Concentrate to Permeate Flow for any element: 5:1
- Maximum Pressure Drop for Each Element: 10 psi
Note: These limitations are for general use. More conservative values may be needed for specific projects to ensure optimal performance and membrane longevity. Refer to Hydranautics Technical Bulletins for detailed information on operation limits, cleaning pH, and cleaning temperatures.
Test Conditions
Elements are wet tested for quality assurance under the following conditions:
- NaCl Solution: 1500 PPM
- Applied Pressure: 150 psi (1.03 MPa)
- Operating Temperature: 77 °F (25 °C)
- Permeate Recovery: 15%
- pH Range: 6.5 – 7.0 (Data taken after 30 minutes of operation)
Mechanical / hydraulic
- A: 41.3 inches (1049 mm)
- B: 4.6 inches (116.8 mm)
- C: 0.75 inches (19.1 mm)
- D, core tube extension: 2.19 inches (55.6 mm)
- Weight: 11 lbs. (5.0 Kg)
- All membrane elements are supplied with a brine seal and o-rings.
- Most elements are packaged dry, sealed in polyethylene bags, and shipped in a cardboard box. Some elements are sealed in polyethylene bags containing less than 1.0% sodium meta-bisulfite solution and in a cardboard box.
Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the original PDF datasheet. Contractual data for any project must match the specific OEM PDF revision used on that 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.