Advanced Depth Filtration with ErtelAlsop Pak® Cartridges
For industries requiring high-solids loading capacity and precision particle retention, ErtelAlsop Pak® Lenticular Filters represent the gold standard in depth filtration technology. As a distributor for top-tier filtration solutions, Purecowater provides these advanced modules to replace traditional plate and frame systems, offering a cleaner, more efficient, and operator-friendly process.
This guide covers the technical specifications, operational benefits, and diverse applications of the Pak® Lenticular Cartridges, helping you determine the right fit for your liquid filtration needs.
What are Pak® Lenticular Filters?
The “Pak” format, originally developed by Alsop Engineering, utilizes a lenticular design. This consists of individual filter cells stacked to form a cartridge. Each cell is constructed from two sheets of depth filter media (such as MicroMedia® or AlphaMedia®) sealed at the edges. This design mimics the functionality of a plate and frame filter but is housed within a totally enclosed vessel.
The result is a sealed, sanitary system that prevents leakage and protects operators from exposure to the fluid—a critical advantage in pharmaceutical and chemical applications.
Key Technical Specifications
The flexibility of the Pak® system lies in its varied configurations. Whether you need pharmaceutical-grade filtration or industrial chemical clarification, there is a module specification to match.
| Feature | Specification |
|---|---|
| Diameters Available | 12 inch (30.5 cm) & 16 inch (40.6 cm) |
| Micron Retention Ratings | 0.25 to 15 microns (Nominal) |
| Filter Media Options | MicroMedia®, AlphaMedia®, MicroClear® (Carbon), Bio-Pak® |
| Gasket Materials | EPDM, Buna-N, Viton, Silicone, Teflon Encapsulated |
| Core Material | Polypropylene |
| End Configurations | Flat Gasket, Double O-Ring (222, 226 styles) |
Advantages Over Plate & Frame Filters
Many facilities are upgrading from open plate and frame presses to lenticular housings. The benefits are substantial:
- Zero Leakage: The enclosed housing design eliminates the edge leakage common in plate and frame filters, reducing product loss and mess.
- Quick Change-Out: Replacing a Pak® cartridge takes a fraction of the time required to dress a filter press, significantly reducing downtime.
- Scalability: Housings can accommodate multiple stacked cartridges (1-high, 2-high, 3-high, or 4-high) to handle varying flow rates without increasing the footprint.
- Operator Safety: Hazardous fluids are contained within the housing, reducing vapor exposure.
Product Series & Applications
ErtelAlsop offers specific series tailored to different industry requirements. Purecowater can help you select the exact module for your process.
1. Zeta-Pak® (General Purpose)
The workhorse of the industry, utilizing cellulose fibers and inorganic filter aids to provide strong positive zeta potential. This attracts negatively charged contaminants like bacteria and hazes.
Best for: Food & Beverage, Cosmetics, Chemicals.
2. AquaKv-Pak® (Utility & Oils)
Specifically designed for the electric utility market, these cartridges remove water and carbon from insulating oils (transformer oil).
Best for: Transformer oil purification, Circuit breaker oils.
3. Bio-Pak® (Pharmaceutical)
Manufactured with high-purity alpha-cellulose for critical applications requiring low extractables.
Best for: Antibiotics, Vaccines, Blood Fractionation.
4. MicroClear® (Activated Carbon)
Immobilized activated carbon within the media sheet allows for decolorization and odor removal without the mess of loose carbon powder.
Best for: Spirit decolorization, Chemical purification.
Why Choose Purecowater for Filtration?
As a trusted distributor, Purecowater provides not just the product, but the technical expertise to integrate ErtelAlsop modules into your existing workflow. Whether you need to size a new housing or find a compatible replacement for an existing filter, our team is ready to assist.
Ready to Optimize Your Filtration Process?
Contact Purecowater today to discuss sizing, pricing, and availability for ErtelAlsop Pak® Cartridges.
Information referenced from ertelalsop.com and other industry specifications.