Highest Salt Rejection Seawater RO Watermaker Membranes
AMI high rejection and high productivity seawater reverse osmosis membranes are specially designed for marine applications. AMI SWRO membranes are ideal for seawater desalination in shipboard applications, watermakers, land-based desalinators and sea-based desalinators. AMI Membranes are Made in the USA in their ISO 9001:2015 Certified Facility and are 100% Quality and Performance Tested.
Looking for a replacement seawater desalination membrane element for your watermaker filter system? View our Watermaker Replacement Membrane Chart.
Benefits of AMI Seawater Desalination RO Membranes:
- Convert seawater into drinking water on yachts, boats, cruise ships, off-shore platforms, and resorts
- High Rejection & Flow Rate
- Made in the USA
- Manufactured in ISO 9001:2015 Certified Facilities
- 100% Performance and Quality Tested
- High Quality for Consistent and Reliable Performance
- Uses the most advanced membrane film technology and manufacturing processes
- Standard dimensions to fit in commonly available housings
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M-S4040A Specifications
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| AMI Model Number |
M-S4040A |
Can Replace Models:
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DOW SW30-4040,
DuPont SW30-4040,
FilmTec SW30-4040,
Spectra FT-MB-SW4x40,
Koch 1820SS
Industry-Standard 4x40 Size Seawater RO Elements |
| Size (Approximate): |
4" Dia. x 40"L |
| Flow Rate: |
1950 gpd (7.38 m³/d) |
| Applied Pressure: |
800 psig (55 bar) |
| Stabilized Salt Rejection: |
99.6% |
| Minimize Salt Rejection: |
99.4% |
| Single Element Recovery: |
8% |
| Exterior: |
Hard Shell Fiberglass |
Membrane Type:
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Polyamide Thin-Film
Composite |
For Use in Systems:
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Watermakers or marine systems using 4x40 SWRO Membranes
Katadyn Spectra Systems:
Spectra Farallon 1800c,
Spectra Farallon 2800c,
Spectra LB 1800,
Spectra LB 4000
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Permeate flow and salt rejection based on 32,000 ppm NaCl feed stream, pressure and recovery listed above. Element Permeate flow may vary +/- 20%
M-S4040A Operating Limits
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| Maximum Operating Temperature: |
113°F (45°C)
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| Maximum Operating Pressure: |
1,000 psig (69 bar) |
| Maximum Pressure Drop: |
15 psig (1 bar) |
| Maximum Feed Flow Rate: |
16 gpm (3.6m³/h)
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| pH Range, Continuous Operation: |
2-11 |
| pH Range, Short-Term Cleaning: |
1-13 |
| Maximum Feed Silt Density Index: |
SDI 5 |
| Fere Clorine Tolerance: |
0 |
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