HEPA-XFP™
HEPA level paint booth overspray filtration system for aerospace applications
First Stage
The CPA pre-filter is a multi-layered polyester media constructed of lofted denier and heavier densified fiber. The air leaving side is inkjet printed for identification and proper installation.
Second Stage
The ME/PT pre-filter is constructed of two different layers of tackified polyester media, RF heat-sealed together. Additional face sealing secures the two layers. Each layer is constructed of a multi-layered, multi-density polyester with heavy, non-migrating tackifier on the air-leaving side.
Third Stage
The first patented HEPA level achieving filtration system designed for aerospace applications. The HEPA-XFP™ 6 Pocket Bag Filter is constructed using 2 plies of electrostatic medias. The first and second plies are a composite of melt blown and spun bound polyester fibers. The third, air leaving ply, is constructed of polypropylene and acrylic media.
3 Ply Electrostatic Media
Using 3 layers of electrostatic media, the HEPA-XFP achieves 99.97% efficiency on 0.3 µm size particles of low viscosity and high viscosity paints, as well as Method 319 test agents, KCL and Oleic Acid. High paint holding capacity and low initial pressure drop ensure a cost-effective solution to achieving the highest efficiency standards available.
Securely Sealed with No Paint Bypass
Each pocket is securely sealed with a galvanized metal gasket header. This eliminates any paint bypass through or around the bag filter.
NESHAP Method 319 Test Results
| Particle Size | Method 319 Efficiency Requirements | HEPA-XFP™ Efficiency |
| Dry Paint Performance – testing agent KCL neutralized | ||
| .73 | 75% | 99.992% |
| 1.16 | 85% | 99.998% |
| 2.85 | 95% | 100.000% |
| Liquid Paint Performance – testing agent Oleic Acid neutralized | ||
| 0.47 | 65% | 99.992% |
| 1.41 | 80% | 100.000% |
| 2.83 | 95% | 100.000% |
Other Test Results
| Paint Tested | Paint Arrestance - Average Removal Efficiency | Paint Fractional Efficiency |
| Deft 44-GN-72: 0.2 -0.3 µm (dry, low viscosity) | 99.999% | 99.98% |
| Deft 02-Y-040A: 0.2-0.3 µm (liquid, high viscosity) | 99.997% | 99.99% |
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Initial Pressure Drop 0.245 @ 120 FPM (12” final filter) |
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ASHRAE 52.2 Efficiency 99.989% - 0.30-1.0 μm - MERV 16 |
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*A.J. Dralle, Inc. is dedicated to developing the most efficient and innovative filtration systems. As a research driven company, our systems are products of thorough testing. To demonstrate our dedication, we also test our systems to determine if they meet EPA NESHAP Method 319 standards with actual paint used in field, as well as Method 319 testing agents. If you are interested in paint test results, please give us a call.