POPULA Welding Workshop Fume Extraction Solution with 9-19 Centrifugal Fan

Welding workshops often experience two ventilation problems: concentrated fumes around welding stations and heat accumulating beneath the roof. A practical welding workshop fume extraction solution should capture fumes before they spread while maintaining sufficient air exchange throughout the building.

This POPULA solution combines local fume extraction, a 9-19 high-pressure centrifugal fan, filtration equipment and DWT roof exhaust. The system is suitable for metal fabrication workshops with multiple welding stations and an overhead duct network.

Welding Workshop Fume Extraction Solution for Local Capture

General wall or roof ventilation alone cannot effectively control welding fumes near the operator’s breathing zone. Portable circulation fans may spread fumes across adjacent workstations instead of removing them.

Welding stations should therefore use suitable extraction points positioned close to the welding source. Branch ducts connect the workstations to a common main duct, while balancing dampers help maintain appropriate suction at both nearby and distant extraction points. This local capture system removes fumes before they disperse through the workshop.

9-19 High-Pressure Centrifugal Fan and Filtration

Extraction points, branch ducts, elbows and filtration equipment create significant system resistance. The POPULA 9-19 high-pressure centrifugal fan provides the negative pressure needed to move contaminated air through the complete duct network.

Extraction point → branch duct → main duct → spark-control section → filtration equipment → 9-19 centrifugal fan → outdoor discharge

The filtration equipment removes welding particles, while the 9-19 fan supplies the required extraction pressure. Installing the fan after the filter helps reduce dust accumulation and impeller wear.

According to the supplied product information, the gas entering the 9-19 fan should not contain adhesive substances, its dust concentration should remain below 150 mg/m³, and its temperature should not exceed 80°C. The final model should be selected according to total airflow, filter resistance and duct pressure loss.

DWT Roof Exhaust and Passive Fresh Air

Local extraction controls welding fumes, but it does not remove all the heat that rises toward the workshop roof. A DWT-I fiberglass axial roof fan can be installed at the highest part of the building to exhaust accumulated hot air and residual airborne contaminants.

As hot air is discharged, the workshop develops slight negative pressure. Outdoor air then enters naturally through doors or low-level louvers on the opposite side of the building. This creates an airflow path from the cleaner area toward the welding area without requiring a separate powered supply fan.

The fresh-air openings must have sufficient free area. Openings that are too small may cause excessive negative pressure, uncomfortable drafts and reduced exhaust performance. If the roof exhaust system has higher resistance, a DWT-II centrifugal roof fan may be considered after calculation.

Practical Benefits for Metal Fabrication Workshops

Separating local fume extraction from general roof ventilation gives each system a clear function. The 9-19 centrifugal fan maintains suction through the fume collection and filtration network, while the DWT roof fan removes heat from the upper part of the workshop.

This arrangement can reduce fume dispersion, improve working visibility and create a more stable airflow direction. It also makes the system easier to inspect and maintain because the extraction branches, filter and roof exhaust operate as identifiable modules.

POPULA can review the number of welding stations, duct layout, required airflow, filter resistance and operating temperature before recommending the final fan configuration.