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Hydranautics

SWC-2521 Hydranautics Nitto 220 GPD at 800 PSI 2.5 x 21 inch Desalination Machine Watermaker Seawater SWC Series Membranes

SWC-2521 Hydranautics Nitto 220 GPD at 800 PSI 2.5 x 21 inch Desalination Machine Watermaker Seawater SWC Series Membranes

Regular price $341.25 USD
Regular price Sale price $341.25 USD
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SWC-2521 Hydranautics Nitto 220 GPD at 800 PSI 2.5 x 21 inch Desalination Machine Watermaker Seawater SWC Series Membranes

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PLEASE REFERENCE TABLE BELOW

 

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.

2.5" Elements
Model # Diameter x Length GPD Rejection Typical Pressure Price
SWC-2521 2.5 x 21 220 99.40% 800

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