Description
Low-noise Multi-vane Centrifugal Fan
High-volume ventilation with quiet, smooth and reliable operation. Engineered for commercial canteens, hotels, plastics machinery, and chemical equipment requiring strict acoustic and airflow standards.
Key Technical Features
Built for high-volume ventilation and quiet operation, combining multi-vane aerodynamics with rugged carbon steel construction.
Multi-Vane Impeller
Densely arranged blades move high volumes of air efficiently for ventilation, heat removal, and steady exhaust systems.
Thickened Carbon Steel
Fine spray painting provides wear and corrosion resistance, creating a ruggedly reinforced, shockproof housing structure.
All-Copper Motor
Precision machine-wound with high-grade, thick copper wire for stable running, low temperature rise, and long life.
Multiple Casing Options
Offers Type A standard and Type B square casing configurations to match diverse equipment space and duct layouts.
Product Specifications
Comprehensive technical parameters, performance ratings, and mounting dimensions for the LWFDF-11 series.
Technical Performance Table
| Model | Voltage (V) | Speed (r/min) | Power (kW) | Air Volume (m³/h) | Total Pressure (Pa) | Noise [dB(A)] |
|---|---|---|---|---|---|---|
| LWFDF-11-1.5A-0.37-2P-1-001 | 220 | 2800 | 0.37 | 700-800 | 912-720 | ≤72 |
| LWFDF-11-1.5A-0.37-2P-3-002 | 380 | 2800 | 0.37 | 700-800 | 912-720 | ≤72 |
| LWFDF-11-2A-1.1-2P-1-001 | 220 | 2800 | 1.1 | 1900-2500 | 1200-959 | ≤74 |
| LWFDF-11-2A-1.1-2P-3-002 | 380 | 2800 | 1.1 | 950-1850 | 410-294 | ≤67 |
| LWFDF-11-2A-0.25-4P-1-003 | 220 | 1450 | 0.25 | 1900-2500 | 1200-959 | ≤74 |
| LWFDF-11-2A-0.25-4P-3-004 | 380 | 1450 | 0.25 | 950-1850 | 410-294 | ≤67 |
| LWFDF-11-2.25A-1.5-2P-1-001 | 220 | 2800 | 1.5 | 2690-3550 | 1510-1213 | ≤75 |
| LWFDF-11-2.25A-1.5-2P-3-002 | 380 | 2800 | 1.5 | 1349-2010 | 430-372 | ≤68 |
| LWFDF-11-2.25A-0.37-4P-1-003 | 220 | 1450 | 0.37 | 2500-3800 | 1510-1213 | ≤75 |
| LWFDF-11-2.25A-0.37-4P-3-004 | 380 | 1450 | 0.37 | 1349-2010 | 430-372 | ≤68 |
Thickened Carbon Steel Casing
Fine craftsmanship spray painting provides wear-resistant and corrosion-resistant protection, creating a ruggedly reinforced, shockproof and drop-proof housing built for lasting use.
Engineered to endure moisture and heavy industrial workloads while maintaining structural rigidity.
- Wear-resistant surface — stays in great condition in harsh environments
- Corrosion-resistant coating — withstands moisture and challenging conditions
- Ruggedly reinforced — sturdy structure for long-term reliability
Multi-Vane Impeller for Strong, Stable Airflow
The densely arranged blades move a high volume of air efficiently, making the fan suitable for ventilation, heat removal and exhaust systems that require steady airflow.
Optimized blade geometry ensures smooth fluid dynamics and minimized internal turbulence.
- Densely arranged blades — moves high volumes of air efficiently
- Heat removal capability — ideal for high-temperature equipment exhaust
- Steady airflow delivery — maintains consistent pressure across systems
All-Copper Motor
Precision machine-wound with high-grade, thick copper wire, the motor runs stably with low temperature rise and long life.
Provides dependable power output under continuous industrial and commercial duty cycles.
- Precision machine-wound — high-grade, thick copper wire windings
- Low temperature rise — ensures extended thermal endurance
- Stable operation — dependable power for heavy-duty running
Low Noise Stable Operation
Optimized fan structure reduces operational vibration and noise, making it suitable for catering establishments, hotels, and work areas with strict acoustic requirements.
Balanced rotating components ensure quiet performance without sacrificing ventilation capacity.
- Optimized structure — significantly reduces operational vibration
- Acoustic compliance — ideal for hotels and catering establishments
- Strict acoustic standards — quiet and reliable workflow
Powerful Exhaust for Faster Air Renewal
The multi-vane impeller delivers strong, steady airflow to help remove heat, cooking fumes and stale air efficiently.
Accelerates indoor air exchange cycles to maintain fresh and breathable working environments.
- Rapid air renewal — quickly clears stale air and fumes
- Efficient extraction — removes heat and cooking odors effectively
- Strong steady output — maintains continuous indoor climate control
Multiple Casing Options
Different projects require different installation layouts. The LWFDF-11 A/B Series offers multiple casing configurations to help match equipment space, duct arrangement and project requirements.
Select Type A standard casing or Type B square casing depending on your specific spatial integration needs.
- Type A Standard Casing — conventional layout for general ventilation projects
- Type B Square Casing — square outer form for project-specific equipment integration
- Installation adaptability — perfectly matches diverse duct arrangements
Wide Industrial Applications
High-volume ventilation with quiet, smooth and reliable operation across specialized machinery and commercial facilities.
Chemical Machinery
Reliable fume extraction and ventilation support for chemical processing units.
Commercial Canteens
High-volume heat and steam extraction for large institutional kitchens.
Grain Machinery
Pneumatic conveying and air drying support for agricultural grain processing.
Hotels & Restaurants
Quiet ventilation and exhaust management for hospitality facilities.
Plastics Machinery
Cooling and auxiliary air supply for plastic extrusion and molding lines.
Commercial Exhaust
Reliable air renewal and odor control for busy commercial spaces.
LONGWELL — Trusted Industrial Fan Manufacturer Since 1990
Founded in 1990 in Yuyao, Ningbo, LONGWELL has grown into a vertically integrated ventilation technology group. We engineer standard and explosion-proof fan and motor systems with 4,000 m²+ of manufacturing floor, dedicated aerodynamics labs, and a global export network.
Every LONGWELL fan is built on automated lines, featuring computer-balanced impellers and 100% run-testing before shipment. We are certified to ISO 9001:2015 and ISO 14001, ensuring the highest standards of safety and reliability for hazardous and industrial applications.
Production & Quality Control
Strict quality control, automated assembly, and robust packaging ensure your fans arrive ready for installation.
Global Market Presence
LONGWELL exhaust fans are the preferred choice for EPC contractors and industrial clients worldwide.
Trusted by Leading Brands
We supply reliable industrial ventilation solutions to top-tier global manufacturers.
Professional & Certified
Our products meet stringent international safety, quality, and performance standards.
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View Product →Frequently Asked Questions
Quick technical answers regarding the LWFDF-11 low-noise multi-vane centrifugal fan series.
What are the main performance highlights of the LWFDF-11 series?
The LWFDF-11 series provides high-volume ventilation with quiet, smooth, and reliable operation, making it ideal for commercial and industrial settings requiring stable airflow and strict acoustic control.
How does the multi-vane impeller benefit ventilation performance?
The densely arranged blades move a high volume of air efficiently, making the fan suitable for general ventilation, heat removal, and exhaust systems that require steady and powerful airflow.
What casing configurations are available for LWFDF-11 fans?
It offers Type A Standard Casing for general ventilation layouts and Type B Square Casing for project-specific equipment integration and compact installation spaces.
What materials are used for the motor and housing?
The housing is built from heavy-gauge carbon steel with fine spray-painting for superior wear and corrosion resistance, while the motor features precision machine-wound thick copper wire for low temperature rise.
Is the LWFDF-11 series suitable for noise-sensitive areas?
Yes. Optimized fan structures reduce operational vibration and noise, making it highly suitable for catering establishments, hotels, and work areas with strict acoustic requirements.
Need a Quote or Custom Specifications?
Tell us your airflow, static pressure, and installation requirements — our engineers will size the right LWFDF-11 model and provide a quote within 1 business day.
