Standard Centrifugal Plug Fan
PAS/PNS Series are standard plug fans for air conditioning and commercial ventilation. The core technologies—backward curved design with variable width—enable the fan operating in high-efficiency zone at 50/60Hz without VFD, delivering efficient, reliable airflow for AHU, MAU, and commercial ventilation applications with space and installation constraints.
Contact Us Now| Specification | PAS (Airfoil blade) | PNS (Plate blade) |
|---|---|---|
| Type | High Efficiency Plenum Fan | Standard Plenum Fan |
| Max Air Volume (CMH) | 138,000 | 70,000 |
| Max Pressure (Pa) | 3,500 | 3,500 |
| Size Range (mm) | 250–1,600 | 250–1,000 |
| Impeller Blades | 11 blades | 10 blades |
| Efficiency | Up to 75% | Up to 73–74% |
Airfoil blade features high efficiency, low noise — ideal for continuous operation. Plate blade features economical, reliable — suitable for general ventilation
Constant impeller diameter with variable width, enabling the fan operation in high-efficiency zone at 50/60Hz without VFD.
Wide high-efficiency range with stable pressure curve, ideal for VAV systems.
Diffusion design on the outlet of impeller can achieve higher efficiency and lower outlet noise.
Eliminates transmission losses, ensures higher efficiency, reduces maintenance requirements, provides more compact unit construction.
ST1/ST2/ST3 optional to meet structural strength requirements under different operating conditions.
Horizontal, vertical, plug, 3 installation type to accommodate different space layouts.
PAS-Ex/PNS-Ex explosion-proof versions available for hazardous locations.
International certification. AMCA Certified for air performance, CE compliant for European market standards.
Optional Add-Ons:
Optional Add-Ons:
Optional Add-Ons:
Complete technical specifications, dimensional drawings, and performance curves.
Request Catalogue →Step-by-step installation and commissioning procedures for all configurations.
Read More →Regular maintenance schedules, troubleshooting, and spare parts information.
Read More →Detailed performance graphs and operating envelopes for all series sizes.
Read More →Comprehensive technical data, material specifications, and certification documents.
Read More →| Requirement | Recommended Model |
|---|---|
| High efficiency priority, continuous operation | PAS (Airfoil blade) |
| Budget priority, general ventilation | PNS (Plate blade) |
| Higher strength requirement | ST2 / ST3 strength class |
| ATEX certification required | PAS-Ex / PNS-Ex |
| Custom cabinet matching | Variable width design |
| Application | Recommended Series | Core Advantages |
|---|---|---|
| Air Handling Units (AHU) | PAS/PNS | Variable width matches cabinet dimensions, high efficiency and energy saving |
| Make-up Air Units (MAU) | PAS/PNS | Compact structure, stable pressure |
| Commercial Building Ventilation | PAS/PNS | Low noise, high airflow, high reliability |
| Constant Temperature & Humidity Units | PAS | Stable pressure, high efficiency |
| Rotary Dehumidifier Units | PAS/PNS | Can serve as process fan or regeneration fan |
| General Industrial Plant Ventilation | PAS | Durable, explosion-proof optional |
| Warehouse Ventilation | PNS | Economical, reliable |
| Comparison Dimension | PAS/PNS | Traditional Plug Fan | Advantage |
|---|---|---|---|
| Pressure Performance | 3500 Pa | Typically 3100 Pa | Higher pressure, wider application range |
| Width Adaptability | Variable Width | Fixed Width | Flexibly matches different cabinet sizes |
| Strength Grades | 3 Options Available | Single Strength | Adapts to different operating conditions |
| Customization | Available | Partially Available | Applicable to more scenarios |
| Impeller Type Selection | Airfoil / Flat Plate | Single Impeller Type | Meets different efficiency/cost requirements |
| Comparison Dimension | PAS/PNS (Standard Series) | EPAS/EPNS (EC Series) |
|---|---|---|
| Motor Type | Standard Motor | EC Smart Motor |
| Energy Efficiency | High Efficiency | IE5+ Ultra Efficiency |
| Protection Class | Standard IP54 | IP66 High Protection |
| Control Method | Fixed Speed / Simple Speed Control | Stepless Speed Control + Smart Integration |
| Positioning | Standard requirement, Cost-Effective Priority | High-End Applications, Energy-Saving Priority |
Complementary Relationship: PAS/PNS meets standard requirements, while EPAS/EPNS fulfills high-end energy-saving needs.
Recommended fan types for various equipment and industries.
→Key performance and design advantages over traditional options.
→Standard series vs. EC series: features at a glance.
→Standard configuration pricing. (Coming Soon)
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