Product description
G/Y4-73 Boiler Forced Draft & Induced Draft Fan
Product Overview
The G/Y4-73 Boiler Forced Draft & Induced Draft Fan series is designed for industrial boiler air supply and flue gas extraction applications. Depending on the configuration, the fan can be used as a Forced Draft Fan (FD Fan) for supplying combustion air or as an Induced Draft Fan (ID Fan) for extracting boiler flue gas.
The G/Y4-73 series uses an industrial centrifugal fan structure and can be configured according to boiler capacity, required airflow, total pressure, air or flue gas temperature, fuel type, dust concentration, system resistance, and installation conditions.
The series is suitable for industrial boilers, heating plants, thermal processing systems, biomass combustion systems, coal-fired boiler systems, and other industrial combustion applications.
G4-73 Forced Draft Fan
The G4-73 Boiler Forced Draft Fan is used on the air-supply side of the boiler system.
It provides combustion air to the furnace and helps maintain stable combustion conditions.
Typical airflow path:
Ambient Air → G4-73 FD Fan → Air Duct → Air Preheater / Air Distribution System → Boiler Furnace
The G4-73 is suitable for applications requiring stable combustion-air flow and pressure.
Typical Applications
Industrial steam boilers
Coal-fired boilers
Biomass boilers
Heating plants
Industrial furnaces
Thermal processing systems
Combustion air supply systems
Boiler air distribution systems
Y4-73 Induced Draft Fan
The Y4-73 Boiler Induced Draft Fan is used on the flue gas side of the boiler system.
It extracts combustion flue gas from the boiler and transfers it through downstream dust collection, flue gas treatment, and chimney systems.
Typical airflow path:
Boiler Furnace → Heat Recovery Equipment → Dust Collector → Flue Gas Treatment → Y4-73 ID Fan → Chimney
The Y4-73 helps overcome the resistance of the complete flue gas system and maintain the required furnace draft.
Typical Applications
Industrial boiler flue gas extraction
Coal-fired boiler exhaust systems
Biomass boiler exhaust systems
Heating plants
Waste heat boilers
Dust collection systems
Flue gas treatment systems
Industrial exhaust systems
Key Features
One product series for boiler FD and ID applications
Industrial centrifugal fan construction
Stable airflow and pressure performance
Suitable for continuous-duty industrial operation
Configurable for different boiler capacities
Suitable for combustion-air supply or flue gas extraction
Heavy-duty centrifugal impeller
Robust fan housing
Carbon steel or customized materials
Multiple drive configurations available
VFD-compatible configurations
Customized motor and electrical systems
Suitable for dusty and high-temperature applications
OEM manufacturing available
Application-specific engineering support
Technical Specifications
Specification G/Y4-73 Boiler Fan Series
Product Series G/Y4-73
Fan Type Industrial Centrifugal Fan
G4-73 Configuration Forced Draft Fan / FD Fan
Y4-73 Configuration Induced Draft Fan / ID Fan
Main Application Boiler Air Supply / Flue Gas Extraction
Airflow Customized according to system requirements
Total Pressure Customized according to system resistance
Air Temperature Customized according to operating conditions
Flue Gas Temperature Customized for ID applications
Fan Speed Customized
Motor Power Customized
Drive Type Direct Drive / Coupling Drive / Belt Drive
Impeller Heavy-Duty Centrifugal Impeller
Housing Material Carbon Steel / Customized
Rotation Direction Customized
Installation Base-Mounted / Customized
Speed Control VFD Compatible
Power Supply Customized
Operating Mode Continuous Industrial Operation
Note: Final fan selection should be based on actual boiler capacity, airflow, pressure, temperature, fuel type, dust concentration, system resistance, and installation conditions.