GY4-73 Centrifugal Ventilation blower
The GY4-73 centrifugal fan is designed for forced and induced draft systems of 2–670 t/h steam boilers in large thermal power plants. It handles flue gas up to 250°C with a dust collector (≥85% efficiency) for induced draft and clean air below 80°C for forced draft. This fan series features high efficiency, stable operation, and reliable construction.
Specifications:
Pressure Range: approx. 2,100 – 10,800 Pa
Air Volume: approx. 16,000 – 640,000 m³/h
Impeller Diameter: 800 – 2,950 mm
Rotating Speed: 580 – 1,450 r/min
Drive Type: Direct drive / Coupling / Belt drive
Medium & Temperature:
Induced draft fan: flue gas, temperature ≤ 250 °C, with a dust removal efficiency ≥ 85% before the fan
Blower (ventilator): clean air, temperature ≤ 80 °C
Applications: Ventilation and induced draft systems of 2–670 t/h steam boilers in large thermal power plants
Features: High efficiency, stable performance, low noise, strong structure, suitable for continuous industrial operation.
CONFIGURATION OPTIONS
1. CONSTRUCTION & MATERIALS
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Impeller: Carbon steel; optional FRP, stainless steel, rubber lining, wear-resistant or ceramic coating.
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Casing / Damper: Standard carbon steel; optional FRP or stainless steel.
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Main Shaft: High-strength alloy steel.
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Bearings: ZWZ / SKF / FAG / NSK.
2.SYSTEM & ACCESSORIES
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Motor: High-efficiency Chinese brand or ABB / Siemens / WEG.
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Optional Parts: Base frame, silencer, flexible joint, damper, rain cover, shock absorber, sensors, inverter, soft starter, monitoring instruments.
| Serial number | Machine number No | Rotating Speed r/min | Full Pressure Pa | Air Volume m³/h | Power kW |
|---|---|---|---|---|---|
| 1 | 8D | 1450/960/730 | 2104-1400 | 16156-30993 | 18.5 |
| 2 | 9D | 1450/960 | 2668-1775 | 20303-44128 | 30/37 |
| 3 | 10D | 1450/960/730 | 3101-2194 | 31554-66353 | 55 |
| 4 | 11D | 1450/960/730 | 4003-2659 | 41998-80750 | 75/90 |
| 5 | 12D | 1450/960/730 | 4777-3171 | 54526-104600 | 132/160 |
| 6 | 14D | 1450/960/730 | 6541-4333 | 88656-168100 | 280/315 |
| 7 | 16D | 960/730/580 | 2293-1562 | 85571-164150 | 185 |
| 8 | 18D | 960/730/580 | 4701-3126 | 121830-233730 | 200/220 |
| 9 | 20D | 960/580 | 3347-2225 | 127080-248300 | 220/250 |
| 10 | 22D | 960/730/480 | 3972-2815 | 177000-332000 | 310/370 |
| 11 | 25D | 730/480 | 5139-3648 | 260000-348000 | 570/700 |
| 12 | 28D | 960/480/375 | 6404-4541 | 289000-504000 | 350/400 |
| 13 | 29.5D | 756/596 | 7483-5100 | 435000-680000 | 800/1000 |
Professional Support Throughout Every Stage — From Selection to After-Sales Maintenance
At Dajing blower, we are dedicated to providing clients with a comprehensive, one-to-one service experience.
Our process covers every stage — pre-sale technical consultation, in-sale production tracking, and after-sale “Private Manager” support — ensuring efficiency, safety, and customer satisfaction.
Expert Technicians for Your Equipment Needs
Each customer is assigned a professional engineer responsible for model selection and technical consultation. We use advanced CAD and CAPP software to provide accurate blower designs and simulate performance for various working conditions.
In-Sale: Full-Process Tracking Service
Your designated project manager monitors the entire process — from material selection, manufacturing, and testing, to shipment and installation. We ensure every blower meets strict quality standards and delivery deadlines.
After-Sale: Private Manager Service
After delivery, Dajing provides 24/7 “Private Butler” after-sales support. Our service follows the “1224 Standard”: respond within 1 hour, provide feedback within 2 hours, and resolve within 24 hours.
