For industries ranging from pharmaceuticals to specialty chemicals, achieving superior fluid clarity without the mess and downtime of traditional methods is critical. ErtelAlsop Pak Lenticular Filter Housings represent the evolution of depth filtration, offering a totally enclosed, scalable, and efficient alternative to standard plate and frame filter presses.
At Purecowater, we understand that process integrity and ease of operation are paramount. The ErtelAlsop Pak system combines the high solids-loading capacity of depth media with the safety and convenience of a cartridge-style housing. This guide covers the specifications, operational benefits, and diverse configurations of these industry-leading filter housings.

What is the ErtelAlsop Pak Lenticular Housing?
The ErtelAlsop Pak Lenticular Filter Housing is a vessel designed to hold lenticular filter modules (also known as “Paks”). Unlike traditional plate and frame presses where filter sheets are manually loaded between plates, lenticular modules come pre-assembled encapsulated stacks. These modules are stacked vertically inside the housing, which is then sealed to create a leak-proof, pressure-rated system.
Core Functionality
The system forces liquid through the depth filter media contained within the varying number of cells in the module. The housing directs flow from the outside of the module stack, through the media, and into the center core, effectively trapping particulates, haze, and deformable contaminants.
- Enclosed System: Eliminates leakage and minimizes exposure to liquid and vapors.
- Scalable: Housings can hold between 1 and 4 modules, providing up to 144 ft² (13.7 m²) of filtration area in a single footprint.
- Versatile Media: Compatible with extensive grades of Micro-Media®, Alpha-Media®, and carbon-impregnated grades.
Key Benefits for Industrial & Sanitary Applications
Transitioning from open presses to enclosed lenticular housings offers significant advantages for operators and process engineers.
| Feature | Benefit |
|---|---|
| Total Enclosure | Prevents product loss and protects operators from hazardous fumes or fluids. Ideal for solvents and high-value pharmaceuticals. |
| Rapid Changeout | Modules can be changed in a fraction of the time required to dress a plate and frame press, significantly reducing downtime. |
| Sanitary Design | Available with high-polish finishes (RA 20 or better) and sanitary fittings, making it compliant with GMP and FDA requirements. |
| Clean-in-Place (CIP) | The robust design typically allows for CIP procedures and steam sterilization (subject to media selection). |
Housing Configurations and Materials
ErtelAlsop manufactures widely adaptable housings to suit distinct market needs, from rugged industrial environments to pristine bio-pharmaceutical suites.
1. Sanitary & Pharmaceutical Housings
Designed for critical applications, these housings feature a dome that is easily removed for access. They often utilize a Double O-Ring seal mechanism to ensure zero bypass.
- Material: 316L Stainless Steel
- Finish: Electropolished or mechanical polish to sub-micron RA
- End Cap Style: Double O-Ring (Code 8 style) or Flat Gasket
2. Industrial Flat Top Housings
Built for everyday chemical and general filtration ruggedness. These units are often used for batch processing of chemicals, fragrances, and lower-viscosity fluids.
- Material: 304 or 316 Stainless Steel, Carbon Steel
- Orientation: Vertical (Top loading)
- Closure: Heavy-duty swing bolts or V-bands
3. Utility & Horizontal Housings
For large-scale operations or height-restricted areas, horizontal housings allow for easier loading at chest height. Utility housings are specifically geared towards transformer oil and dielectric fluid reconditioning.
Technical Specifications
Below are the general specifications for the ErtelAlsop Pak Lenticular series. Actual performance depends on the specific media grade and fluid viscosity.
| Specification | Value Range |
|---|---|
| Module Diameter | 12 inch (30.5 cm) or 16 inch (40.6 cm) |
| Capacity (Modules) | 1 to 4 Modules per Housing |
| Filtration Area | 0.6 m² to 13.7 m² (6.7 ft² to 144 ft²) |
| Pressure Rating | Standard 60 PSI (150 PSI or ASME Code available) |
| Gasket Materials | EPDM, Viton, Buna-N, Silicone, Teflon Encapsulated |
| Housing Materials | 304 SS, 316 SS, 316L SS, Carbon Steel, Polypropylene |
Who is this Product For?
The versatility of the ErtelAlsop Pak Lenticular Housing makes it a staple in several high-demand industries:
- Food & Beverage: For the clarification of syrups, spirits, wines, and flavorings where taste and odor neutrality are required.
- Pharmaceuticals & Biotech: Removing protein hazes, filtration of culture media, and processing of intermediates.
- Cosmetics: Polishing fragrances, essential oils, and lotions.
- Chemicals & Solvents: Clarifying paints, resins, and inks in a contained environment to adhere to safety regulations.
- Energy & Utilities: Reconditioning insulating oils (transformer oils) to remove carbon and moisture.
Solving Filtration Challenges with Purecowater
Whether you are upgrading from an open press system to improve air quality and yield, or installing a new line for botanical extraction, the ErtelAlsop Pak system offers a verified solution.
Purecowater can assist in sizing the correct housing and selecting the appropriate lenticular media for your specific stream. We ensure you get the right materials of construction to handle your chemical compatibility and pressure requirements.
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