With the tenet of 'meeting customer needs', we stand out from the competition and are at a leading position in the field of dryer vent booster fan, Backward Centrifugal Fan, centrifugal exhaust fans. On the basis of technological innovation and quality leading, we adhere to the reputation for life. 'Customer first' is our tenet as always, and we will continue to make unremitting efforts to provide practical products and thoughtful services for the global customers. And we are going to surely present you with the best quotation and after-sale service.
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

By providing services that help extend the life of our products, we promise our customers the quality and durability of our High Pressure Exhaust Snail Blower Fan Centrifugal Turbine Blower, thus gaining our reputation. We effectively establish the concept of challenging to the advanced level and looking to the highest standard. We provide a more professional and thoughtful one-stop procurement service for the majority of corporate customers, thereby saving time, energy and cost due to the complex selection and procurement.
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