At Purecowater, we specialize in solving complex solid and liquid filtration challenges. As a distributor and OEM for industry leaders, we are proud to offer ErtelAlsop Pak® Lenticular Filters. These advanced depth filter cartridges (modules) provide a robust, enclosed alternative to traditional plate and frame filtration, delivering high solids loading capacity and superior particle retention.
What are ErtelAlsop Pak® Lenticular Filters?
The Pak® cylinder, commonly known as a lenticular filter module, is designed to streamline the depth filtration process. Originally developed to overcome the leakage and labor-intensive maintenance associated with plate and frame filters, the Pak® system utilizes a totally enclosed design. This ensures a hygienic environment and minimal product loss, making it ideal for critical applications in pharmaceuticals, food and beverage, and chemical processing.
Each module is constructed from multiple stacked filter cells. These cells act like a robust stack of double convex lenses—hence the term “lenticular.” The edges of the filter media are sealed using a patented polypropylene molding process, ensuring structural integrity and preventing bypass.
Key Benefits
- Scalability: Existing plate and frame specifications can be easily translated to the lenticular format using the same filter media.
- Efficiency: High solids loading capacity and excellent throughput.
- Ease of Use: Pre-assembled modules allow for rapid change-outs tailored to minimize downtime, especially when paired with horizontal housings.
- Versatile Configurations: Available in 12-inch and 16-inch diameters with various cell counts to match specific flow and retention needs.
For more background on the specific engineering behind these cartridges, you can reference the manufacturer data at ertelalsop.com.
Media Configurations and Options
ErtelAlsop Pak® cartridges are highly versatile due to the wide range of media options available. Depending on your process requirements, you can select from several specialized formulations:
- Zeta-Pak®: The workhorse of the industry. These modules utilize Micro-Media® containing diatomaceous earth (DE) and cellulose to provide a high zeta potential. This is essential for the retention of ultra-fine particles and haze removal, making them excellent for botanical extracts and distilled spirits [clearsolutionscorp.com].
- Disc-Pak®: Featuring AlphaMedia™, these are 100% cellulose filters (no DE or Perlite). They are ideal for applications where mineral extractables are a concern, such as dielectric oils, perfumes, and specific pharmaceutical applications [clearsolutionscorp.com].
- MicroClear®: These modules incorporate activated carbon, allowing for adsorption of color, odor, and off-tastes within a convenient cartridge format.
Technical Specifications
The following table outlines the standard specifications for the Pak® Lenticular Filters available through Purecowater.
| Specification | Details |
|---|---|
| Diameters Available | 12 inch (30.5 cm) / 16 inch (40.6 cm) |
| Micron Ratings (Nominal) | 0.25 µm to 15 µm |
| Number of Cells | Typically 5 to 18 stacked cells per module |
| End Cap Configurations | Flat Gasket, Double O-Ring |
| Core Material | Polypropylene |
| Gasket Material | EPDM (Standard), Medical Grade Options Available |
| Media Types | Cellulose (AlphaMedia), DE/Cellulose (MicroMedia), Carbon (MicroClear) |
Housing Compatibility
One of the standout features of the ErtelAlsop system is the flexibility in housing design. The Pak® cartridges fit into both vertical and horizontal housings.
Horizontal Filter Housings: Featuring the “Lock and Load” system, these housings allow for single-operator loading and unloading. This orientation reduces overhead clearance requirements and simplifies the handling of heavy, saturated cartridges [ertelalsop.com].
Common Applications
Due to their enclosed nature and high filtration surface area, Pak® Lenticular Filters are used across a variety of industries:
- Botanical Extraction: Removal of waxes and lipids while maintaining high flow rates.
- Pharmaceuticals: Clarification of syrups and removal of active carbon.
- Food & Beverage: Haze removal in distilled spirits, wines, and syrups without affecting flavor profiles.
- Industrial: Filtration of lubricating oils and dielectric fluids.
Need Help Selecting the Right Lenticular Filter?
Choosing the correct media grade and micron rating is critical for optimizing your filtration process. Purecowater can help you navigate the specifications to find the perfect solution for your facility.