Features of HVAC High-Temperature Filters
I. Efficiency of HVAC High-Temperature and High-Efficiency Filters
The practical filtering efficiency of high-temperature, high-efficiency filters at 250°C ranges between H12 and H13. This is due to the physical properties of the adhesive used: the 250°C red high-temperature silica gel and the white high-temperature inorganic glue, which operates at 350-400°C, both have poor fluidity. Consequently, the actual filtration efficiency of H13 high-temperature, high-efficiency filters at 350-400°C is between H11 and H12.
II. Precautions Before Using High-Temperature and High-Efficiency Filters
The organic silica gel and inorganic glue used in high-temperature-resistant high-efficiency filters cure from the surface inward. The thicker the glue injection, the more difficult it is to cure. Under normal conditions, the curing time of the glue is 3-7 days. If an uncured high-temperature, high-efficiency filter is directly installed in a high-temperature device for normal use, it will likely cause the high-temperature glue to crack, expand, and separate from the outer frame.
To address these issues, the following two approaches are recommended:
- Standard Usage: The high-temperature, high-efficiency filter should be used after a curing period of 7 days.
- Immediate Installation: If immediate installation is necessary, it is recommended that customers follow the steps below before using our high-temperature-resistant high-efficiency filter:
Step 1: Slowly heat the filter to 100°C in the high-temperature equipment, and then allow it to cool after maintaining a constant temperature for 2 hours.
Step 2: Heat the filter to 150°C for 1 hour, then stop heating and allow it to cool.
Step 3: Heat the filter to 200°C for 1 hour, then stop heating and allow it to cool.
Step 4: Heat the filter to 250°C for 1 hour, then stop heating and allow it to cool.
Final Step: The product can be used normally after it has cooled slowly.
The factory can make the customized sizes as requested
Parameter：
| Model | Outside dimensions (mm) |
Rated air flow (m3/h) | Initial resistance (Pa) |
Efficiency (≤0.5um) |
Dust capacity (g) |
| SAF-NGXH-0.5 | 203*203*78 | 50 | ≤220 | ≥99.99% | 30 |
| SAF-NGXH-01 | 203*203*150 | 100 | 60 | ||
| SAF-NGXH-2.5 | 305*305*150 | 250 | 150 | ||
| SAF-NGXH-05 | 305*610*150 | 500 | 300 | ||
| SAF-NGXH-06 | 457*457*150 | 600 | 360 | ||
| SAF-NGXH-7.5 | 457*610*150 | 750 | 450 | ||
| SAF-NGXH-10 | 484*484*220 | 1000 | 600 | ||
| SAF-NGXH-10 | 610*610*150 | 1000 | 600 | ||
| SAF-NGXH-15 | 630*630*220 | 1500 | 900 | ||
| SAF-NGXH-20 | 610*610*292 | 2200 | 1200 | ||
| SAF-NGXH-30 | 910*610*292 | 3000 | 1800 |
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