GY5-51 Boiler
Forced / Induced Draft Fan
GY5-51 is a boiler centrifugal fan series for steam-boiler forced-draft and induced-draft systems. It is suitable for 2–670 t/h boilers and can also support higher-pressure fluidized-bed boiler ventilation duties.
G5-51 is mainly used on the clean-air side for combustion-air supply. Y5-51 is mainly used on the flue-gas side for induced draft and negative-pressure support.
Final selection should include fan position, airflow, total pressure, gas temperature, dust concentration, outlet angle, rotation direction, voltage and site layout.
One Series, Two Different Boiler Draft Positions
GY5-51 covers both boiler forced-draft and induced-draft directions, but G5-51 and Y5-51 should not be treated as the same working condition. The medium, temperature, dust loading and system resistance change across the boiler air path.
G5-51 mainly handles clean combustion air. Y5-51 handles flue gas or gas containing impurity particles. The fan position should therefore be confirmed before comparing model number, motor power or casing size.
How G5-51 and Y5-51 Work in the Same System
Fresh or preheated air enters the combustion-air side.
Pushes combustion air toward the boiler or furnace.
Combustion, heat exchange and dust-treatment resistance occur here.
Pulls flue gas through the exhaust route and supports negative pressure.
Forced-Draft and Induced-Draft Comparison
| Selection Point | G5-51 Forced Draft | Y5-51 Induced Draft | What to Confirm |
|---|---|---|---|
| Fan Position | Before the boiler or furnace | After combustion and treatment equipment | Complete boiler air-path layout |
| Medium | Clean or preheated air | Flue gas with possible impurity particles | Dust, temperature and corrosion risk |
| Pressure Source | Air-side duct and burner resistance | Boiler, collector, duct and chimney resistance | Total system pressure loss |
| Main Goal | Supply combustion air | Maintain exhaust flow and negative pressure | Required operating point and control method |
GY5-51 Configuration and Application Characteristics
The series covers both combustion-air supply and flue-gas extraction directions.
Suitable for steam-boiler systems, industrial boiler rooms and thermal-power applications.
Can meet higher-pressure requirements in fluidized-bed boiler ventilation systems.
Cantilever structure and elastic coupling transmission support stable operation.
Rotation and outlet angle can be matched to the site duct and foundation layout.
May also be reviewed for dust removal, mine ventilation and general industrial ventilation.
GY5-51 Series Configuration Reference
The following data is for preliminary review. Final selection should be confirmed according to boiler capacity, airflow, pressure, medium condition, temperature and site layout.
| Item | Reference Data |
|---|---|
| Fan Series | GY5-51 Series |
| Fan Type | Boiler forced-draft fan and induced-draft fan |
| Boiler Capacity | 2–670 t/h steam boiler |
| Model Range | No.8D–No.29.5D |
| Drive Type | D type, cantilever structure with elastic coupling direct transmission |
| Forced Draft Medium | Air |
| Induced Draft Medium | Flue gas or gas containing impurity particles |
| Impurity Concentration | Below 200 mg/m³ recommended for longer service life |
| Working Temperature | ≤250°C |
| Rotation Direction | Left-hand or right-hand rotation |
G5-51 Boiler Forced Draft Fan
The following representative data is for preliminary forced-draft model comparison.
| Model | Speed | Air Volume | Total Pressure | Power | Motor |
|---|---|---|---|---|---|
| 8D | 1450 r/min | 9,900–14,300 m³/h | 2,525–2,423 Pa | 15 kW | Y160L-4 |
| 10D | 1450 r/min | 30,300–37,900 m³/h | 4,944–3,804 Pa | 45 kW | Y225M-4 |
| 12D | 1450 r/min | 55,400–68,200 m³/h | 6,656–5,429 Pa | 110 kW | Y315S-4 |
| 16D | 1450 r/min | 79,100–185,000 m³/h | 10,095–7,083 Pa | 450–550 kW | Y400-4 |
| 20D | 960 r/min | 140,000–182,000 m³/h | 6,156–2,809 Pa | 400 kW | Y400-6 |
Y5-51 Boiler Induced Draft Fan
The following representative data is for preliminary induced-draft model comparison.
| Model | Speed | Air Volume | Total Pressure | Power | Motor |
|---|---|---|---|---|---|
| 8D | 1450 r/min | 9,900–15,500 m³/h | 1,568–1,455 Pa | 11 kW | Y160M-4 |
| 10D | 1450 r/min | 26,500–45,100 m³/h | 2,104–1,718 Pa | 37 kW | Y225S-4 |
| 12D | 1450 r/min | 33,400–46,200 m³/h | 3,525–3,401 Pa | 75 kW | Y280S-4 |
| 13D | 1450 r/min | 70,700–80,200 m³/h | 3,847–3,556 Pa | 132 kW | Y315M1-4 |
| 15D | 1450 r/min | 65,100–152,000 m³/h | 6,509–3,865 Pa | 220–315 kW | Y355-4 |
Information Required for Fan Selection
Confirm forced draft or induced draft before comparing model data.
Provide required airflow and static or total pressure basis.
Confirm gas temperature, dust loading, impurity concentration and corrosion risk.
Provide outlet angle, rotation, voltage, motor standard and site layout.
Continue from GY5-51 to Product Family, System and Related Models
Use the product-family and system pages to confirm the correct side of the boiler air path. Specific product links remain available for direct comparison.
Use this route when G5-51 is configured for combustion-air or clean-air supply.
View Boiler FD Fans →Use this route when Y5-51 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 clean-air and flue-gas boiler fan family with separate G and Y directions.
View G/Y4-73 →Review a smaller industrial boiler blower and induced-draft direction for medium-duty systems.
View GY6-41 →Review a larger-capacity boiler draft series for higher airflow, pressure and motor power.
View GY6-51 →Get a GY5-51 Boiler Fan Quote
Send boiler capacity, fan position, airflow, pressure, temperature, dust concentration, outlet direction, rotation, voltage and site layout.
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