01 / The Project Reality
"We don't just sell steel and impellers. We solve airflow headaches."
Most factory ventilation drops in efficiency after just 6 months because the fans weren't built for reality. The 4-79 Series Centrifugal Fan is designed for the heavy-duty haul: moving high-volume, clean air or non-corrosive gas (< 80^C) in large-scale plants, workshops, and HVAC systems without the constant threat of downtime.
The Dust Limit: Handles particulate dust up to 150 mg/m^3 (keeps running smooth as long as it's not sticky).
The Mission: Consistent air input/output with zero uninvited vibration.
02 / The "No-Nonsense" Engineering Details
What happens inside our fan that keeps your maintenance team happy?
16 Backward-Inclined Blades: Why backward-curved? Because forward-curved blades drag on your electricity bills. Our aerodynamically optimized wheel delivers maximum static pressure while slashing power consumption by up to 15%.
The Split-Casing Savior (Sizes No.14-20): If you've ever had to tear down an entire duct system just to check a wheel, you'll love this. The casing splits horizontally. Undo the bolts, lift the top, and your team is in and out in half the time.
True Dynamic Balancing: A fan that shakes is a fan that dies. Every single impeller is spin-tested and balanced to strict industrial tolerances. Your bearings live longer, your foundation stays intact, and the noise stays down.
Leak-Proof Bearing Boxes: Our transmission spindles and heavy-duty bearing housings are sealed tight. No oil drops, no premature wear under continuous 24/7 loads.
03 / Quick Selection Guide & Drive Match
A-Style? C-Style? E-Style? Let's pick what your duct actually needs.
🛠️ Engineer's Note:
Don't stress over the massive Performance Table below. B2B ventilation isn't "one size fits all." Your duct length, static pressure loss, and local voltage matter.
Are you guessing between models? Don't risk a mismatched system. Drop your project drawings or target airflow/pressure to our team. We'll run the calculations and send you a Free CAD Selection Report within 2 hours.
Premium Models & Key Capabilities:
| Model / No. | Drive Configuration | Best Used For | Airflow Range (m3/h) | Static Pressure (Pa) | Motor Power (kW) |
| 3.5A / 4A / 5A / 6A | A-Style (Direct Motor Drive) | Compact spaces, higher RPM, zero belt maintenance. | 3,120 - 17,720 | 706 - 3,334 | 3.0 - 15.0 |
| 7C / 8C | C-Style (V-Belt Drive) | Flexible speed adjustment, motors isolated from air heat. | 15,580 - 41,700 | 932 - 2,501 | 15.0 - 30.0 |
| 5E to 18E | E-Style (Coupling Drive) | Heavy-duty, massive air volume, ultimate 24/7 industrial life. | 13,600 - 375,800 | 1,166 - 2,609 | 11.0 - 250.0 |
04 / No Surprises at the Port
Sea freight is rough. Our export standard is rougher.
When heavy industrial machinery travels thousands of miles, "good enough" packaging is a liability. Here is how we guarantee your fan arrives ready to bolt down and run:
Waterproof/Salt-Spray Sealing: The entire fan assembly is wrapped in heavy-duty, multi-layer rust-preventative stretch film to survive humid ocean containers.
Structural Skid Shipping: Small units go into ISPM-15 heat-treated wooden boxes. Large units are welded/bolted down to custom steel frames so forklifts can't damage the inlet cone.
Visible Field Markings: Anodized aluminum nameplates with exact specifications (Flow, Pressure, RPM, Power) plus clear rotation arrows, lifting points, and grounding tags for error-free on-site installation.
05 / Talk to Someone Who Speaks "Fluids", Not Just Sales
Ready to get an accurate quote?
We support custom voltages (380 V / 415 V / 440\V/ 660 V), 50 Hz/ 60 Hz frequencies, explosion-proof motors (Ex-d), and specialized anti-corrosion coatings.
Tell us where this fan is going, and we'll build the quote to match your local grid and environment.
Email：winston-xu@hengdingfan.com
Hot Tags: 4-79 Series Centrifugal Exhaust Fan | Reliable HVAC B2B, China, manufacturers, suppliers, factory, price, for sale, CE certification, centrifugal fan for mediterranean, centrifugal exhaust fan blower, backward curved fan, axial centrifugal fan, industrial centrifugal fans, Centrifugal Ventilator
You Might Also Like
Send Inquiry