Hydranautics
CPA7 MAX Hydranautics Nitto Membranes
CPA7 MAX Hydranautics Nitto Membranes
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CPA7 MAX Hydranautics Nitto Membranes
Hydranautics SWC4 MAX Seawater RO Membrane
The Hydranautics SWC4 MAX (manufactured by a Nitto Group Company) is a high-performance, 8-inch by 40-inch seawater composite (SWC) reverse osmosis membrane engineered for maximum salt rejection and high-productivity desalination. Utilizing advanced composite polyamide polymer technology, this spiral-wound element is the highest salt-rejecting seawater membrane within the Hydranautics SWC lineup, designed specifically to treat high-salinity seawater and highly brackish waters. The "MAX" configuration signifies an optimized internal design that maximizes the packing density, providing an industry-leading 440 square feet of active membrane surface area. This increased active area allows facility operators to achieve higher pure water production rates, directly reducing overall capital costs by requiring fewer pressure vessels and less floor space for the same output.
Designed to deliver an exceptionally pure end product even in warm water and high-TDS environments, the SWC4 MAX yields a high permeate flow rate of 7,200 GPD (27.3 m³/d) with a nominal salt rejection of 99.8%. It is rigorously tested at a standard applied pressure of 800 PSI to ensure reliable, field-proven performance in demanding desalination plants. Built to withstand continuous-duty industrial and municipal applications, this robust membrane safely accommodates a maximum applied pressure of 1200 PSI, a maximum feed flow of 75 GPM, and continuous liquid temperatures up to 113°F (45°C). By combining industry-leading salt and boron rejection with a maximized surface area, it is an optimal choice for large-scale seawater desalination, high-TDS industrial wastewater treatment, and offshore marine operations.
| SPECIFICATION | DETAILS |
| Model Number | SWC4 MAX |
| Manufacturer | Hydranautics (Nitto) |
| Element Type | Seawater RO Membrane |
| Membrane Technology | Composite Polyamide |
| Active Membrane Area | 440 ft² (40.9 m²) |
| Permeate Flow Rate | 7,200 GPD (27.3 m³/d) |
| Nominal Salt Rejection | 99.8% |
| Minimum Salt Rejection | 99.7% |
| Test Pressure | 800 PSI (5.5 MPa) |
| Max Applied Pressure | 1200 PSI (8.27 MPa) |
| Max Feed Flow Rate | 75 GPM (17.0 m³/h) |
| Max Operating Temp | 113°F (45°C) |
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