4-72 series centrifugal ventilation blower
The 4-72 series centrifugal blower is designed for indoor ventilation in general factories and large buildings. It can work as both supply and exhaust air, handling air and other non-self-igniting, non-explosive gases that are harmless to people and non-corrosive to steel. It’s also widely used in large-airflow, low-noise, high-efficiency applications such as thermal-power boiler systems (G4-10 / Y4-10).
Specifications:
Pressure range: 615–8302 Pa
Air volume: 10,696–952,530 m³/h
Impeller diameter: 400–3,000 mm
Speed: ≤ 4,000 rpm
Drive type: Direct / Coupling / Belt driven
Cooling: Air / Water / Oil cooling (optional)
CONFIGURATION OPTIONS
1. CONSTRUCTION & MATERIALS
Impeller: High-quality carbon steel; optional FRP, stainless steel, rubber lining, wear-resistant layer/liner, or ceramic patch; high-temperature alloy available.
Casing / Damper: Standard carbon steel; optional FRP or stainless steel (other anti-corrosion/anti-wear options available).
Main Shaft: High-strength carbon steel / alloy structural steel.
Bearings: ZWZ / SKF / FAG / NSK.
2.SYSTEM & ACCESSORIES
Motor: Chinese famous brand or ABB / Siemens / WEG (customizable).
Optional Parts: Base frame, protective screening, silencer, inlet & outlet flexible connections, counter flanges, air damper with electric actuator, shock absorber, diaphragm coupling / fluid coupling, motor rain cover, temperature & vibration sensors, soft starter / inverter, special motor, system monitoring instruments.
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.
