Explosion-Proof Fans
Explosion-proof axial and centrifugal fans, 220–18,000 m³/h, 70–1,100 W, 220 / 380 V, for oil & gas, chemical and paint-shop environments. Final selection is confirmed at the duty point (airflow / static pressure / voltage / control mode) and by project verification.
| Model | Size | Max airflowm³/h | Max static pressurePa | PowerW | NoisedB(A) | Speedrpm | VoltageV | ||
|---|---|---|---|---|---|---|---|---|---|
| LWEX-AF-2.5A-0.12-4P-1-001AC | — | 232 | see curve | 120 | — | 195 | 220 | Details | |
| LWEX-AF-2.5A-0.12-4P-3-001AC | — | 284 | see curve | 120 | — | 238 | 380 | Details | |
| LWEX-AF-3A-0.18-4P-1-001AC | — | 329 | see curve | 180 | — | 285 | 220 | Details | |
| LWEX-AF-3A-0.18-4P-3-001AC | — | 433 | see curve | 180 | — | 390 | 380 | Details | |
| LWEX-AF-4A-0.37-4P-1-001AC | — | 533 | see curve | 370 | — | 490 | 220 | Details | |
| LWEX-AF-4A-0.37-4P-3-001AC | — | 633 | see curve | 370 | — | 590 | 380 | Details | |
| LWEX-AF-5A-0.55-4P-1-001AC | — | 740 | see curve | 550 | — | 685 | 220 | Details | |
| LWEX-AF-5A-0.55-4P-3-001AC | — | 781 | see curve | 550 | — | 740 | 380 | Details | |
| LWEX-AF-6A-0.75-4P-1-001AC | — | 8,700 | see curve | 750 | — | 1,450 | 220 | Details | |
| LWEX-AF-6A-0.75-4P-3-001AC | — | 8,700 | see curve | 750 | — | 1,450 | 380 | Details | |
| LWEX-AF-7.5A-1.1-4P-3-001AC | — | 10,500 | see curve | 1,100 | — | 1,450 | 380 | Details | |
| LWEX-AF-7A-1.1-4P-3-001AC | — | 10,200 | see curve | 1,100 | — | 1,450 | 380 | Details | |
| LWEX-WF-3A-0.12-4P-1-001AC | — | 2,200 | see curve | 120 | — | 1,450 | 220 | Details | |
| LWEX-WF-3A-0.12-4P-3-001AC | — | 2,200 | see curve | 120 | — | 1,450 | 380 | Details | |
| LWEX-WF-4A-0.18-4P-1-001AC | — | 2,400 | see curve | 180 | — | 1,450 | 220 | Details | |
| LWEX-WF-4A-0.18-4P-3-001AC | — | 2,400 | see curve | 180 | — | 1,450 | 380 | Details | |
| LWEX-WF-5A-0.25-4P-1-001AC | — | 4,900 | see curve | 250 | — | 1,450 | 220 | Details | |
| LWEX-WF-5A-0.25-4P-3-001AC | — | 4,900 | see curve | 250 | — | 1,450 | 380 | Details | |
| LWEX-WF-6A-0.37-4P-1-001AC | — | 9,500 | see curve | 370 | — | 1,450 | 220 | Details | |
| LWEX-WF-6A-0.37-4P-3-001AC | — | 9,500 | see curve | 370 | — | 1,450 | 380 | Details | |
| LWEX-WFS-5A-0.37-4P-1-001AC | — | 6,600 | see curve | 370 | — | 1,450 | 220 | Details | |
| LWEX-WFS-5A-0.37-4P-3-001AC | — | 6,600 | see curve | 370 | — | 1,450 | 380 | Details | |
| LWEX-WFS-6A-0.55-4P-1-001AC | — | 9,600 | see curve | 550 | — | 1,450 | 220 | Details | |
| LWEX-WFS-6A-0.55-4P-3-001AC | — | 9,600 | see curve | 550 | — | 1,450 | 380 | Details | |
| LWEX-WFS-7.5A-0.75-4P-1-001AC | — | 18,000 | see curve | 750 | — | 1,450 | 220 | Details | |
| LWEX-WFS-7.5A-0.75-4P-3-001AC | — | 18,000 | see curve | 750 | — | 1,450 | 380 | Details | |
| LWSFPEX-4A-0.9-2P-1-001AC | — | 2,100 | see curve | 900 | — | 2,900 | 220 | Details | |
| LWWEX-OR-2.5A-0.155-2P-1-001AC | — | 220 | see curve | 155 | — | 200 | 220 | Details | |
| LWWEX-OR-2A-0.07-2P-1-001AC | — | 220 | see curve | 70 | — | 180 | 220 | Details | |
| LWWEX-OR-3A-0.14-2P-3-001AC | — | 380 | see curve | 140 | — | 260 | 380 | Details | |
| LWWEX-OR-3A-0.18-2P-1-001AC | — | 220 | see curve | 180 | — | 260 | 220 | Details |
Explosion-Proof Fans — selection guide
The Explosion-Proof Fans category currently lists 31 models, maximum airflow 220–18,000 m³/h, on AC motors, across 5 series. Common voltages: 220 V, 380 V.
Explosion-proof axial and centrifugal fans move air in areas where flammable gases, vapours or dusts may be present: oil & gas, chemical and pharmaceutical plants, paint shops and battery factories. Motors and construction are rated for the hazardous-area category of the installation.
How to select a Explosion-Proof Fan
- Define the hazardous-area zone and gas / dust group first; it fixes the motor protection concept and materials.
- Select the duty point as for any fan, then confirm the Ex rating with our engineers — certificates are issued per configuration.
- Spark-resistant construction (non-sparking impeller and housing materials) is specified per AMCA 99 type where required.
Typical applications
- Oil & gas facilities
- Chemical and pharmaceutical plants
- Paint booths and solvent stores
- Battery and hydrogen facilities
Why specify LONGWELL explosion-proof fans
Every model here is a current production item with structured data — not a catalogue scan. Curves are tested on our own wind-tunnel rigs per AMCA 210 / ISO 5801 methods, drawings and datasheets download directly, CAD is released on request, and a quotation with the duty-point check comes back within one business day. Samples ship in 1–3 days and production batches in 15–30 days from the factory in Ningbo, with ISO 9001 / 14001 / 45001 management systems and ETL, CE and RoHS documentation per product line.
FAQs — Explosion-Proof Fans
Which explosion-proof ratings are available?
Fans are configured to the zone and gas group of the project; ratings and certificates are confirmed per order. Send the zone classification with your enquiry.
Are the fans spark-resistant as well as Ex-motor rated?
Yes, spark-resistant impeller and housing combinations are available for applications that require them; specify the AMCA 99 construction type.
What is the lead time?
Standard configurations ship in 15–30 days; certified special versions on request.