We actively promote the company's high-quality historic leapfrog development to build a world-class manufacturer of the backward curved fan, Low Noise Exhaust Fan, refrigerator condenser fan. Our aim is to provide customers with humanized and considerate service, exceeding their needs and expectations. Our company adheres to the 'customer-oriented, low-cost and high-quality as the basis, customer satisfaction as the goal' business philosophy to win the trust of users with preferential prices.
Production description
YWF series centrifugal fan with external motor has features of compact structure,convenient installation, credible running, little noise, energy saving and high efficiency.
Our product YWFF250 has several speed ranks, adapt to both frequency conversion and voltage transformation speed changing active.
Our products are widely used in refrigeration and ventilation fields, such as condenser’ evaporator, duct fans, ceiling fans.
Voltage and frequency: Single phase motor is 115/220V, 50/60HZ, three phase motor is 380V, 50/60HZ. We can also supply other fan motors with different voltages and frequencies according to clients’ requirement.
The average service life of motors is more than 17500 hours.
(1)Material: Impeller: galvanized sheet steel
Rotor: Coated in black plastic
(2)Bearings: Maintenance- free ball bearings
(3) Direction of rotation: Clockwise, seen on rotor (opposite cable exit), or viewing from inlet
(4)All models have reached UL approval, CE approval and CCC approval
(5)The type of protection is IP54. All models are fitted with an internal Thermal Overload Protection Device
(6)Mounting position: Shaft horizontal or rotor on bottom; rotor on top on request (Any)
(7)Insulation class is class B or class F.
Performance parameters
| Model | Voltage | Frequency | Current | Input Power W | Speed | Max Air Flow | Capacitor | Noise dB(A) | Curve | |
YWFB2E250 | 230 | 50/60 | 0.65/0.8 | 145/185 | 2450/2550 | 1400/1450 | 4 | 75/77 | ①② | |
115 | 50/60 | 1.3/1.6 | 145/185 | 2450/2550 | 1400/1450 | 16 | 75/77 | |||
YWFB2E250H | 115 | 50/60 | 2.05/2.9 | 224/330 | 2650/3250 | 1640/1980 | 30 | 80/84 | ③④ | |
YWFB4E250 | 230 | 50/60 | 0.25/0.44 | 48/50 | 1400/1650 | 820/990 | 2 | 61/64 | ⑤⑥ | |
115 | 50/60 | 0.5/0.55 | 48/60 | 1400/1650 | 820/990 | 6 | 61/64 | |||
YWFB2E250P | 230 | 50 | 0.7 | 150 | 2500 | 1300 | 4 | 75 | ⑦ | |


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

Difference between forward centrifugal fan
(1)efficiency: the efficiency of the forward leaning centrifugal fan is lower than that of the backward leaning centrifugal fan.
(2)energy consumption: because the efficiency of the forward leaning centrifugal fan is low, its natural consumption for electric energy is greater than that of the backward leaning type.
(3)noise: when the forward leaning centrifugal fan is in operation, the noise emitted by the forward leaning centrifugal fan is larger than that of the backward leaning fan.
We are committed to providing quality High Temperature Boiler Blower Industry Oven Centrifugal Ventilate Fan and services through our main business strengths and synergistic development of related industries. We will use solid footsteps to move towards the future one footprint at a time. We take care of the environment, return to the society, caring for employees and other social responsibilities as our own responsibility, and take "integrity, responsibility, innovation, and teamwork" as the company's continuous pursuit and goal. We believe that through our continuous efforts and pursuit, we will be able to achieve the Mutual benefit and win-win situation!
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