With experienced and skilled staff in the area of EC Axial Fan, AC Axial-flow Fan, dryer booster fan, we continue to innovate our product portfolio and provide products to our customers. The company encourages long-term service and takes the responsibility of providing the ideal lifelong career for the staff, and strives to create a fair and harmonious working environment. Our company takes the right management as the principle and realizes the goal of excellent enterprise through the reform and thinking behavior mode. We have professional technical engineers, quality inspectors, and enthusiastic and patient customer service personnel.
Production description
Backward Centrifugal blowers are used primarily for intake suction and do not require a scroll housing. They have high hydraulic efficiency.
Backward centrifugal impellers offer a quiet and compact air moving solution. The Permanent Split Capacitor (PSC) motors provide reduced operating costs and longer service life. Ball bearing construction allows multiple mounting options. Backward centrifugal impellers have low profiles that do not require an enclosure. Air is discharged 360° radially from the impeller wheel. These units operate very efficiently at high pressures.
| The diameter of Impeller | 190mm | |
Material | Impeller | PA plastic 66, fibre glass-reinforced |
Rotor | Coated in black plastic | |
Direction of rotation | Clockwise, seen on rotor | |
Counter-Clockwise, seen on rotor | ||
Type of protection | IP44 or IP54 | |
Insulation class | Class B or Class F | |
Mounting position | Shaft horizontal or rotor on bottom; rotor on top on request(Any) | |
Condensate discharges | Rotor-side | |
Approvals | CE, CCC,UL and so on | |
Mode of operation | Continuous operation(S1) | |
Bearings | Maintenance- free ball bearings | |
Motor protection | Design with thermal overload protector | |
Cable exit | variable, lateral | |
Ambient temperature | -20℃ to 60℃ | |
Performance parameters
| Model | Voltage | Frequency | Current | Input Power | Speed | Max Air Flow | Capacitor | Noise | Curve |
YWFB2E190 | 230 | 50/60 | 0.3/0.35 | 65/80 | 2400/2600 | 530/580 | 2 | 62/64 | ①② |
115 | 50/60 | 0.8 | 70/90 | 2700 | 570/620 | 5 | 63/65 | ③④ |


Product feature and application
(1) Product feature:
●Compact structure
●Specialized design
●Refined process control
●Simple Installation
●High efficiency and low noise
●Long service life
(2)Application
Exhausting industrial processes, roof and building ventilation, clean room and other sensitive HEPA filtering application, laboratory and research facility ventilation, air conditioner, heat exchangers, in-line duct blowers, range hood, fire place inserts, humidifiers, dehumidifiers, hand dryers
Production details

The Research and Development Center
The Research and development center of Ningbo Lionball Ventilator Co., Ltd is a national R&D center. It is appraised as High-tech Enterprises and Engineering Technology Center and has obtained many important prizes in the provincial projects.
Research and development center currently has 25 staff members. We introduced Germanic technology and employed a well-paid fan expert as our technical adviser. What is more, we have cooperated with international renowned enterprise EMERSON for about 5 years and will hand in hand with Carrier China.
Research and development center are facilitated with modern equipment and advanced laboratories: Air flow laboratory and life testing laboratory. We provide each member with professional inspection equipment for better research environment.
Over the past two years, owing to continuous effort of R&D team, we have successively obtained 15 certificates of Utility Model patent and 2 certificates of Invention Patents.
(1)Our Certificates of Utility Model Patent




(2)Certificates of Invention Patent

With years of experience in production and operation, we always put the quality of our High Pressure Centrifugal Ventilation Exhaust Fan/Induced Fan for Forge and Furnace or Boiler Factory From The Biggest Factory in China in the first place and strive for excellence and meticulousness. Based on the principle of customer first, our company provides customers with more cost-effective products, technical services and quality after-sales service. Welcome new and old customers to inquire. We fully seize the opportunity of the improved market environment to increase reform and innovation and transformational development.
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