In the world of seawater desalination, reliability and durability are paramount. Marine environments demand filtration components that can withstand high salinity, variable pressures, and rugged conditions. The Applied Membranes (AMI) M-S Series of Industrial Seawater Reverse Osmosis (RO) Membranes are engineered specifically to meet these challenges.
Purecowater is proud to supply Applied Membranes products, offering solutions that provide high-quality potable water from seawater sources. Whether for shipboard watermakers, land-based desalinators, or commercial marine applications, the M-S Series offers a robust, American-made solution.
What are Applied Membranes M-S Series Membranes?
The M-S Series represents AMI’s specialized line of Seawater Reverse Osmosis (SWRO) elements. Unlike standard brackish water membranes, these elements are constructed to operate effectively at the high pressures required to overcome the osmotic pressure of seawater (typically 800-1000 psi).
Manufactured in ISO 9001:2015 certified facilities in the USA, these membranes utilize advanced Thin Film Composite (TFC) technology. They are widely recognized for their high salt rejection rates and ability to produce drinking water quality permeate from feed water sources with high Total Dissolved Solids (TDS), such as open ocean water.
Key Features
- High Salt Rejection: Delivering up to 99.6% nominal rejection, ensuring safety and potability.
- Broad Range of Sizes: Available in industry-standard 2.5” and 4” diameters, making them compatible with most commercial pressure vessels.
- Rugged Construction: Designed with fiberglass wrapping (in standard industrial models) to handle high-pressure operating environments.
- Replacement Compatibility: Engineered to directly replace many discontinued models from other major manufacturers like Hydranautics.
Technical Specifications
The M-S Series allows system operators to select the exact flow rate and form factor needed for their equipment. Detailed below are the performance specifications for the most popular models in this series.
Note: Performance is based on standard test conditions (typically 32,000 mg/L NaCl, 800 psi, 77°F).
| Model Number | Dimensions (Dia. x Length) | Flow Rate (GPD) | Flow Rate (m³/d) | Nominal Salt Rejection |
|---|---|---|---|---|
| M-S2514A | 2.5″ x 14″ | 150 | 0.6 | 99.6% |
| M-S2521A | 2.5″ x 21″ | 300 | 1.14 | 99.6% |
| M-S2540A | 2.5″ x 40″ | 700 | 2.7 | 99.6% |
| M-S4014A | 4″ x 14″ | 350 | 1.3 | 99.6% |
| M-S4021A | 4″ x 21″ | 800 | 3.0 | 99.6% |
| M-S4040A | 4″ x 40″ | 1,950 | 7.4 | 99.6% |
Ideal Retrofit for Discontinued Elements
One of the significant advantages of the AMI M-S Series is its compatibility. Many older watermakers and industrial systems were designed around specific “Mini-Element” sizes from brands like Hydranautics (SWC Series) which have since been discontinued.
Purecowater recommends the M-S Series as a direct, high-performance replacement for these legacy parts, often providing equal or better salt rejection specs.
| Discontinued Hydranautics Model | Recommended AMI Replacement | Performance Upgrade? |
|---|---|---|
| SWC-2514 | M-S2514A | Yes (+40 GPD Flow) |
| SWC-2521 | M-S2521A | Yes (+80 GPD Flow) |
| SWC-2540 | M-S2540A | Yes (+180 GPD Flow) |
| SWC-4040/SWC6-4040 | M-S4040A | Comparable High Rejection |
Applications
The durability of the M-S Series makes them suitable for a wide variety of salt-water liquid filtration issues:
* Yacht & Marine Watermakers: producing fresh water for drinking, showers, and equipment washdown while at sea.
* Land-Based Desalination: Coastal resorts, island municipalities, and remote work sites.
* Off-Shore Platforms: Critical potable water supply for oil and gas rigs.
* Emergency Relief: Portable systems deployed in disaster zones requiring immediate fresh water.
Need Help Selecting the Right Membrane?
Choosing the correct membrane element is critical for the longevity of your system and the quality of your water. Factors such as feed water salinity, temperature, and operating pressure must be considered to ensure optimal performance.
Purecowater can assist you in cross-referencing part numbers, sizing systems, or planning a full membrane change-out for your vessel or facility.
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