ALN01-40B Replacement Filter Cartridge – 1 μm Pentair Aqualine Compatible
MemKway ALN01-40B replacement filter cartridge is designed as a compatible alternative for selected Pentair Aqualine high flow filtration systems. It features 1 μm pleated polypropylene media in a 40-inch large-format configuration for industrial water and process filtration.
The cartridge is suitable for RO pretreatment, desalination, power generation and general industrial water applications. Final compatibility should be confirmed by OEM part number, dimensions and seal configuration.
1. Compatible Pentair High Flow Filter Models
| Original Pentair Model | MemKway Replacement |
| ALN01-40B | MK-R-ALN01-40B |
| ALN05-40B | MK-R-ALN05-40B |
| ALN10-40B | MK-R-ALN10-40B |
| ALN20-40B | MK-R-ALN20-40B |
2. Core Specifications
| Feature | Details |
| Brand | MemKway |
| MemKway Model | MK-R-ALN01-40B |
| Pentair Equivalent Model | Aqualine ALN01-40B |
| Micron Rating | 1 Micron |
| Length | 40 Inch (1016 mm) |
| Diameter | 6.75 Inch (171.5 mm) |
| Flow Direction | Outside-to-Inside |
| Compatibility | Compatible with Pentair Aqualine High Flow Filter Housings and Codeline 80CF / 80AQ Systems |
3. Materials of Construction
| Component | Material |
| Filter Media | High-Performance Pleated Polypropylene (PP) |
| Support Layer | Polypropylene |
| End Caps | Glass Fiber Reinforced Polypropylene |
| Structure Support | High-Strength Polypropylene Cage/Core |
| O-ring Material | Buna-N Standard / Silicone, EPDM Optional |
4. Operating Conditions
| Parameter | Maximum / Recommended Value |
| Max. Operating Temperature | 82.2°C (180°F) |
| Max. Forward Diff. Pressure | 3.4 bar @ 82.2°C (50 psid @ 180°F) ;5.2 bar @ 20°C (75 psid @ 68°F ) |
| Rec. Change-out Diff. Pressure | 2.4 bar @ 20°C (35 psid @ 68°F) |
| Max. Design Flow Rate | Up to 79.5 m³/h (350 GPM) per element |
5. Clean Pressure Drop vs. Flow Rate (Water @ 20°C)
Flow Rate (GPM) | Flow Rate (m³/h) | Pressure Drop (psid) | Pressure Drop (mbar) |
|---|---|---|---|
50 | 11.3 | 0.12 | 8.27 |
100 | 22.7 | 0.24 | 16.55 |
150 | 34.1 | 0.36 | 24.82 |
200 | 45.4 | 0.48 | 33.09 |
6. Key Features & Benefits of ALN01-40B Replacement Filters
Excellent Compatibility with Pentair Aqualine Systems
The ALN01-40B replacement filter is engineered to match the dimensions, sealing configuration, and installation requirements of original Pentair Aqualine cartridges. As a reliable Pentair compatible filter and Pentair high flow cartridge equivalent, it is designed for compatible installation in selected Pentair Aqualine systems.
Large Filtration Area
The pleated polypropylene media provides a significantly larger filtration surface area than conventional cartridges, improving contaminant retention and extending service life.
High Flow Performance
The large-diameter design supports high flow rates while maintaining low differential pressure
Long Service Life
Higher dirt-holding capacity reduces cartridge change-out frequency and maintenance costs.
Wide Chemical Compatibility
Polypropylene construction offers excellent resistance to a wide range of industrial water treatment applications.
7. Applications for ALN01-40B Replacement Filter
Desalination Plants
Widely used as a desalination filter cartridge in seawater reverse osmosis (SWRO) systems. Applications include:
- Seawater pretreatment
- Membrane protection
- Cartridge filtration systems
RO Pretreatment Systems
- Industrial RO plants
- Municipal RO systems
- Boiler feedwater systems
- Ultra-pure water production
Power Generation Industry
Common applications:
- Condensate polishing
- Cooling water filtration
- Boiler feedwater treatment
Mining Industry
- Mine water treatment
- Process water filtration
- Tailings water management
Oil & Gas Industry
- Produced water treatment
- Injection water filtration
- Refinery process water
8. Quality & Regulatory Compliance
- Certification: Manufactured in an ISO 9001:2015 certified facility.
- Standards: CE marked for international safety and quality standards.
- Food Contact: Materials comply with FDA 21 CFR requirements for food & beverage contact.
9. Cross-Reference Disclaimer
Frequently Asked Questions (FAQ)
Q1: What is the filtration rating of ALN01-40B replacement filter?
A: The MemKway ALN01-40B replacement filter configuration uses 1 μm pleated polypropylene media for particulate removal in industrial liquid filtration applications.
Q2: Is MemKway ALN01-40B replacement filter designed for Pentair Aqualine systems?
A: Yes. It is designed as a compatible replacement for selected Pentair Aqualine applications. Final fit should be confirmed using the complete OEM part number, dimensions and seal configuration.
Q3: What is the difference between ALN01-40B and ALN05-40B?
A: ALN01-40B uses a 1 μm rating, while ALN05-40B uses a 5 μm rating. Both use the 40-inch Aqualine-format configuration but serve different particle-removal requirements.
Q4: When should the ALN01-40B cartridge be replaced?
A: Replacement should be based on differential pressure, flow performance and process requirements rather than a fixed time interval.
Q5: Can I get custom specifications for the ALN01-40B replacement filter?
A: Yes, MemKway supports customized filtration ratings, sizes, and configurations to meet different system requirements. We provide professional solutions for both standard and custom industrial filtration needs.

