The HemiPleat patent pending cartridge design promises numerous and valuable benefits to end users of dust collection equipment. State-of-the-art pleating technology is the key to the HemiPleat’s superior performance. Techniques used to manufacture the media packs of this cartridge are unique and have never been applied to a cylindrical industrial dust collection filter before. Synthetic beads hold the pleats of the cartridge open with wide pleat spacing not found in competitive cartridges, which are packed too tightly to maximize media use. The wider spacing of the HemiPleat design exposes more media to the gas stream and results in lower pressure drop as well as improved cartridge release characteristics during pulse cleaning.

The high quality uniform pleat pack used to create the HemiPleat cartridge establishes the superiority of this cartridge over all other products in the market. The difference in pleating quality can be seen on the right in a comparison between the media pack and typical industry pleats. The photos below provide visual comparison of the HemiPleat cartridge to a major competitor’s cartridge. Notice the difference in pleat spacing and alignment.

• Lower pressure drop through open pleat spacing improves cleaning efficiency, which will reduce energy costs through less compressed air consumption during cleaning in many applications.
• More media is available for filtration, for improved performance and longer life.
• The separation beads, not the media pleats, contact the inner cage, protecting the media from frictional damage.
Proven Results

The HemiPleat clearly outperforms the competition when tested in high performance situations. The HemiPleat captures more air pollutants and releases more when pulsed. This results in a safer, cleaner work environment with less maintenance.

HemiPleat Testing

The HemiPleat cartridge has been subjected to multiple tests in the lab and in the field. In the lab, the HemiPleat media demonstrates properties that greatly enhance the effect of pulse-jet cleaning along with some other desirable properties:


• It has a lower clean media pressure drop for a given airflow.
• It holds a larger volume of dust before requiring cleaning than filters with more tightly packed media.
• It has more available/usable media for filtration.
• Dust is ejected from deep within the pleats during pulsing.

Conclusive field tests confirm that the HemiPleat will improve the performance of many misapplications and recover from upset conditions.

Specifications
• Efficiency: 99.99% on 0.5 micron and larger particles by weight
• Air Permeability: 25-35 cfm/sq.ft. per 0.5&Mac253; w.c. (457-640 m3/m2h at 125 Pa)
• Pleat Height: Outer – 2.0&Mac253; (57mm) Inner – 1.00&Mac253; (25.4mm)
• Mullen Burst: (Dry) 40psi (2.8 bars) –AIM 20psi (1.4 bars) – minimum
• Double-Seal Gaskets: Height – 0.62&Mac253; (16mm) Inner – 12.38&Mac253; (314mm) O.D. Outer – 15.13&Mac253; (384mm) O.D.
• Pans: Galvanized steel (top & bottom) Optional: Stainless steel
• Filter Sealant: Solid Polyurethane top/bottom
• Max. Temps: 160°F (71°C) Operating 180°F (82°C) Surge

* The Minimum Efficiency Reporting Value (MERV) was determined by product testing conducted by an independent lab. ASHRAE standard 52.2