SWC-2521 Hydranautics Nitto 800 PSI 220 GPD 2.5 inch x 21 inch SWC Series-Desalination Sea Water Membranes
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⚓ Hydranautics SWC-2521 Seawater RO Membrane
The Hydranautics SWC-2521 is a high-performance 2.5-inch seawater reverse osmosis (RO) element specifically designed for marine watermakers and small-scale desalination systems. As part of the SWC (Sea Water Composite) series, it is engineered to deliver high salt rejection and reliable permeate flow, effectively converting high-salinity feedwater into potable drinking water. Its compact 21-inch length makes it an ideal solution for yachts, boats, and offshore platforms where space is limited but water quality is critical.
Utilizing advanced spiral-wound composite polyamide technology, the SWC-2521 provides a stabilized salt rejection of 99.4%. The element is encased in a durable fiberglass outer shell to withstand the high pressures required for effective seawater desalination. With a permeate flow rate of 220 gallons per day, this membrane ensures a consistent supply of fresh water while maintaining energy efficiency in demanding maritime environments.
| SPECIFICATION |
DETAILS |
| Model Number |
SWC-2521 |
| Manufacturer |
Hydranautics (Nitto) |
| Membrane Type |
Composite Polyamide |
| Element Dimensions |
2.5" Diameter x 21.0" Length |
| Permeate Flow Rate |
220 GPD (0.8 m³/d) |
| Stabilized Salt Rejection |
99.4% |
| Minimum Salt Rejection |
99.0% |
| Active Surface Area |
9.9 ft² (0.92 m²) |
| Test Pressure |
800 psi (5.5 MPa) |
| Max Operating Pressure |
1,000 psi (6.9 MPa) |
| Max Operating Temp |
113°F (45°C) |
| pH Range (Continuous) |
2 – 11 |
| pH Range (Cleaning) |
1 – 13 |
| SWC3 - High performance membrane for seawater desalting |
| SWC3+ - Designed and engineered to meet your most demanding desalination needs |
| SWC4+ - High temperature, high rejection performance in a high surface area membrane |
| SWC5 - Designed to offer the perfect combination of high flow, and superior salt and boron rejection with low operating pressures. |
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| 2.5" Elements |
| Model # |
Diameter x Length |
GPD |
Rejection |
Typical Pressure |
Price |
| SWC-2521 |
2.5 x 21 |
220 |
99.40% |
800 |
|
