What is a Primary Air Filter? Types, Efficiency Grades & B2B Sourcing Guide
In commercial HVAC, cleanroom design, and heavy industrial filtration, the primary efficiency air filter (commonly referred to as a primary air filter or
G4 Efficiency Pleated Pre-Filter for Clean Room Air Intake
Secure your controlled environment with our G4 Pleated Pre-Filter, engineered for critical clean room pre-filtration. By utilizing advanced polycotton and synthetic fiber media, this Z-line air filter acts as a robust shield, capturing 0.5microns suspended particles before they reach your HEPA system. Its large filter area and low resistance design ensure stable pressure levels in sensitive manufacturing zones.
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Product Key Features
- HEPA Protection: Specifically designed for pre-filtration in clean rooms to extend the life of secondary filters.
- Synthetic Media Tech: High-density Synthetic pleated media captures fine atmospheric dust effectively.
- High Rated Flow: Capable of handling a rated air flow of 3200m³/h with minimal turbulence.
- Versatile Fit: Compact 21mm or 25mm profiles available for high-density ceiling units.
Material & Craftsmanship
- Media: Blue and white Polycotton blend optimized for fine dust.
- Frame: High-grade Aluminum or Galvanized steel for zero-off-gassing environments.
- Protection: Paint-sided double care net to prevent media fiber shedding.
Applications
Semiconductor Manufacturing: As an essential semiconductor air pre-filter, it maintains dust-free environments for sensitive wafer fabrication and assembly lines.
Pharmaceutical & Biotech Labs: Used as a high-standard laboratory air intake filter to meet sterile air quality requirements and protect critical research.
HEPA Filtration System Protection: Specifically engineered for clean room pre-filtration to capture fine dust before it reaches expensive terminal HEPA filters, significantly extending their service life.
High-End Spray Booths: Ideal for professional spraying industry air intake where zero-off-gassing and high-density particle capture are required for perfect finishes.
Optical & Precision Instrument Assembly: Provides a stable, low-turbulence air supply for facilities assembling high-precision optical components and micro-electronics.
Competitive Comparison
| Feature | Chuqi Pleated Precision Shield | Standard Primary Filters | The Chuqi Advantage |
| Filtration Precision | G4 Efficiency (captures 0.5μm particles). | Lower G2/G3 rating (larger particles only). | Superior Protection: Captures microscopic dust that standard filters miss. |
| Media Technology | High-density Synthetic Pleated Media. | Basic low-loft fiberglass or foam. | Fiber Safety: Double care nets prevent fiber shedding into clean zones. |
| System Compatibility | Compact 21mm/25mm profiles available. | Often bulky and difficult to retrofit. | Space Saving: Perfectly fits high-density ceiling units or compact AHUs. |
| Airflow Stability | Z-line design for minimal turbulence. | Uneven flow and higher resistance. | Stable Pressure: Maintains consistent pressure levels in sensitive zones. |
| Environmental Safety | Zero-off-gassing Aluminum/Galvanized frames. | Cardboard or low-grade plastics. | Zero Contamination: No harmful gasses or particles released into the clean room. |
Specifications
| External dimensions (mm) | Rated air volume (m3/h) | initial resistance (Pa) | Efficiency (Level) (class) | Filter media model
| |
| 295 × 295 × 21/25/46 mm | 800m³ / h | 35 Pa | 40% ( Weighing method )
| G3 /G4
| Non-woven fabric and polyester fiber blended filter media
|
| 495 × 295 × 21/25/ 46m | 1300m³ / h | ||||
| 495 × 495 × 21/25/46mm | 2200m³ / h | ||||
| 595 × 295 × 21/25/46mm | 1600m³ / h | ||||
| 595 × 495 × 21/25/46mm | 2700m³ / h | ||||
| 595×595×21/25/46mm | 3200m3/h | ||||
Specialized Construction for Zero-Contamination Environments
We prioritize air purity through high-quality material construction, using high-grade Aluminum or Galvanized steel frames that are ideal for zero-off-gassing environments. To ensure the highest level of safety, our filters feature a paint-sided double care net to prevent any media fiber shedding into the clean zone. Additionally, our factory’s flexible production allows us to offer compact 21mm or 25mm profiles, providing a precision fit for high-density ceiling units and specialized industrial equipment.
Frequently Asked Questions
Q1: Why is this pleated filter recommended specifically for clean room environments?
Our Pleated Pre-filter is engineered as a robust shield for clean room pre-filtration. It uses high-density synthetic pleated media to capture 0.5 microns suspended particles, ensuring that the air entering your controlled environment is already highly purified before reaching terminal filters.
Q2: How does this filter help in reducing my long-term HEPA filter costs?
By acting as a dedicated HEPA protection layer, it intercepts the majority of fine atmospheric dust. This prevents premature clogging of your more expensive secondary and HEPA filters, effectively extending their lifespan and reducing replacement frequency.
Q3: Can this filter handle high-volume air intake without causing pressure drops?
Yes. The specialized Z-line air filter design provides a large filter area and low resistance. It is capable of handling a rated air flow of 3200m³/h with minimal turbulence, ensuring stable pressure levels in your sensitive manufacturing zones.
Q4: Is there a risk of the filter media shedding fibers into the clean room?
No. We use a paint-sided double care net to secure the media. This construction prevents fiber shedding and ensures the stability of the pleats even under high-rated flow conditions.
Q5: What frame materials are used to ensure air quality standards in labs?
We use high-grade Aluminum or Galvanized steel frames. These materials are selected for their durability and zero-off-gassing properties, making them ideal for pharmaceutical labs and sterile air intake systems.
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