ALN20-40B Replacement Filter | Pentair Compatible Filter & High Flow Cartridge Equivalent
MemKway MK-R-ALN20-40B is a high-performance ALN20-40B replacement filter cartridge, providing equivalent filtration performance, excellent dirt-holding capacity, and long service life. As a reliable Pentair compatible filter and Pentair high flow cartridge equivalent, this high-flow cartridge offers an economical alternative to Pentair high flow filters while maintaining the same installation dimensions and operating efficiency. Whether you are seeking a Pentair high flow cartridge equivalent for a desalination plant, RO pretreatment system, power station, mining operation, or industrial process water application, this filter delivers dependable performance and lower operating costs.
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-ALN20-40B |
| Pentair Equivalent Model | Aqualine ALN20-40B |
| Micron Rating | 20 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 ALN20-40B Replacement Filters
Excellent Compatibility with Pentair Aqualine Systems
The ALN20-40B 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 can be installed directly into existing Aqualine filter housings without equipment modifications.
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 ALN20-40B 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
Why Choose Our ALN20-40B Replacement Filter Cartridge?
Direct Replacement for Pentair Aqualine ALN20-40B
This filter is engineered as a direct replacement for Pentair Aqualine cartridges. Benefits include:
- Compatible with existing Pentair Aqualine housings
- No system modification required
- Fast cartridge replacement
- Reduced maintenance downtime
Proven Pentair High Flow Cartridge Equivalent
Many operators are seeking a Pentair high flow cartridge equivalent that provides comparable performance at a lower operating cost. Our ALN20-40B replacement delivers:
- Equivalent filtration efficiency
- Stable pressure drop
- High flow capacity
- Long cartridge life
Cost-Effective Alternative to Pentair Aqualine
For industrial facilities focused on reducing operating expenses, our filter provides a reliable alternative to Pentair Aqualine cartridges while maintaining dependable filtration performance.
Frequently Asked Questions (FAQ)
Q1: What is the MemKway MK-R-ALN20-40B filter used for?
A: The MemKway MK-R-ALN20-40B is a high-performance ALN20-40B replacement filter designed for industrial water treatment systems. It is widely used in food and beverage processing, pharmaceutical manufacturing, chemical processing, and general industrial applications to remove contaminants and ensure stable water quality.
Q2: Is the ALN20-40B replacement filter compatible with standard filter housings?
A: Yes, the MK-R-ALN20-40B is engineered as a direct drop-in replacement for original ALN20-40B cartridges. It fits perfectly into standard filter housings without modification, making installation fast and convenient.
Q3: How often should I replace the ALN20-40B filter?
A: Under normal operating conditions, the ALN20-40B replacement filter is recommended to be replaced every 3–6 months. The exact service life depends on water quality, flow rate, and operating pressure.
Q4: What are the key advantages of the ALN20-40B replacement filter?
A: This filter offers high filtration efficiency, low pressure drop, high flow rate, long service life, and easy installation. It also reduces energy consumption and maintenance costs for industrial systems.
Q5: Does this filter meet OEM quality standards?
A: Yes, every MemKway MK-R-ALN20-40B filter is manufactured to strict OEM standards. It uses high-quality filter media and durable components to ensure stable performance and reliability.
Q6: Can I get custom specifications for the ALN20-40B 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.
