GY6-51
Large-Capacity Boiler Draft Fan
GY6-51 is designed for steam-boiler and fluidized-bed boiler draft systems requiring large airflow, high pressure and reliable D-type elastic coupling transmission.
The series covers No.8D to No.29.5D and can be reviewed for forced-draft or induced-draft duty in 2–670 t/h steam-boiler systems, high-resistance flue-gas routes and large industrial exhaust projects.
Final selection should be based on the real operating point, boiler capacity, airflow, pressure, gas temperature, impurity concentration, motor standard and site installation conditions.
A Large-Capacity Draft Fan for Demanding Boiler Systems
GY6-51 is not positioned as a small boiler-room blower. It is intended for larger steam-boiler systems where airflow volume, pressure head, flue-gas resistance and long-term operating stability must be considered together.
The same series can be reviewed for forced-draft or induced-draft duty, but the medium condition changes the selection logic. Clean-air duty, hot flue-gas duty, dust loading and system resistance should be confirmed before the model, motor and transmission arrangement are finalized.
Where GY6-51 Provides More Capacity
Supports high-volume air or flue-gas movement up to the 667,000 m³/h reference range.
Suitable for higher boiler resistance, collector loss and fluidized-bed pressure requirements.
Motor power spans from smaller 15 kW arrangements to large project configurations.
Elastic coupling transmission supports reliable operation in large-capacity and high-power projects.
Confirm the Medium Before Selecting FD or ID Duty
| Item | Requirement |
|---|---|
| Forced Draft Medium | Air for boiler combustion support |
| Induced Draft Medium | Flue gas or gas containing impurity particles |
| Recommended Impurity Concentration | Below 200 mg/m³ for longer service life |
| Temperature Limit | Maximum operating temperature should not exceed 250°C |
| Higher-Dust Conditions | Possible in some duties, but wear and service life should be reviewed before selection |
GY6-51 Model Range by Machine Number
The following ranges are for preliminary comparison. Final selection should be confirmed according to the actual operating point, boiler capacity, resistance, gas condition and motor configuration.
| Model | Speed | Air Volume | Total Pressure | Power | Drive |
|---|---|---|---|---|---|
| 8D | 1450 r/min | 11,000–26,400 m³/h | 2,745–1,859 Pa | 15–22 kW | D |
| 11D | 1450 / 960 r/min | 18,900–68,200 m³/h | 5,190–1,541 Pa | 22–110 kW | D |
| 14D | 1450 / 960 r/min | 39,000–141,000 m³/h | 8,406–2,496 Pa | 75–355 kW | D |
| 16D | 1450 / 960 / 730 r/min | 44,300–211,000 m³/h | 10,980–1,885 Pa | 75–710 kW | D |
| 20D | 960 / 730 r/min | 86,700–273,000 m³/h | 7,520–2,626 Pa | 185–630 kW | D |
| 23.5D | 960 / 730 / 580 r/min | 112,000–443,000 m³/h | 10,380–2,567 Pa | 220–1,400 kW | D |
| 29.5D | 730 / 580 / 480 r/min | 183,000–667,000 m³/h | 9,460–2,771 Pa | 400–2,000 kW | D |
Where GY6-51 Is Commonly Reviewed
For large boiler air-supply or flue-gas systems requiring high volume.
For systems where higher pressure head is required across the boiler route.
For collector, duct and chimney systems with significant resistance.
For large continuous-duty boiler ventilation and exhaust applications.
For large dust-treatment lines where the fan must overcome collector resistance.
For heavy industrial exhaust duty when smaller boiler fan series are insufficient.
Selection Information Required
Confirm boiler capacity and whether the fan is used for FD or ID duty.
Provide required airflow and total pressure or static pressure basis.
Confirm gas temperature, dust loading, impurity concentration and corrosion risk.
Provide voltage, motor requirement, inlet/outlet direction, foundation and available space.
Continue from GY6-51 to Product Family, System and Related Models
Use the aggregation and system pages to confirm whether the project requires combustion-air supply or flue-gas extraction. Specific product pages remain available for direct comparison.
Use this route when GY6-51 is configured for combustion-air or clean-air supply.
View Boiler FD Fans →Use this route when GY6-51 is configured for flue-gas extraction and negative-pressure support.
View Boiler ID Fans →Review complete forced-draft and induced-draft routes before final fan positioning.
FD System → ID System →Compare another combined forced/induced draft series for steam-boiler and fluidized-bed duty.
View GY5-51 →Review a smaller industrial boiler blower and induced-draft direction for medium-duty projects.
View GY6-41 →Compare a high-pressure induced-draft direction for boiler, kiln and furnace exhaust systems.
View Y8-39 / Y9-38 →Get a GY6-51 Large-Capacity Draft Fan Quote
Send boiler capacity, duty position, airflow, pressure, gas temperature, impurity concentration, voltage, motor requirement, inlet/outlet direction and installation space.
Tel / WeChat / WhatsApp: +86 15653305981 | Email: sales@qiyuefan.com
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