Centralized High-Vacuum Fume Extraction System for Welding Workshops - LEFILTER Solution

Product Introduction:

LEFILTER's centralized fume extraction system is a engineered network solution for large-scale welding operations. It features a powerful, high-static pressure centrifugal fan capable of maintaining sufficient suction across dozens of pickup points. The system is centered on a large-capacity, self-cleaning cartridge dust collector with fire-retardant filters designed to capture the sub-micron metallic oxide fumes (e.g., hexavalent chromium, manganese) prevalent in welding smoke. Key to its efficiency is our airflow balancing technology, using manual or automated dampers in the ductwork to ensure each welding station receives the designed capture velocity, regardless of how many hoods are open. The ductwork is designed with smooth, large-radius bends and optimal sizing to minimize pressure loss and energy consumption.

Application Area:

This system is ideal for heavy fabrication shops, shipyards, and large manufacturing plants with multiple fixed or semi-fixed welding stations (MIG/MAG, TIG, MMA, FCAW). Welding generates a complex mixture of metallic fumes, shielding gas by-products, and visible smoke. In a workshop with many simultaneous welders, localized mobile units are insufficient, leading to a hazy, unhealthy ambient atmosphere. The hazards are significant: long-term exposure is linked to metal fume fever, respiratory illness, and increased cancer risk. A centralized system solves this by removing the pollutant at source before it enters the workers' breathing zone and the general workshop air.

Our Solution:

LEFILTER provides a complete design-build service. We start by mapping your shop floor layout and welding processes to design an optimized ductwork network. We supply a range of source capture hoods—from flexible extraction arms for manual welding to fixed enclosures or downdraft tables for robotic cells. The central collector is equipped with an automatic pulse-jet cleaning system controlled by a PLC that monitors differential pressure. For aluminum or galvanized steel welding, which produces finer, more challenging fumes, we specify high-efficiency nanofiber filter media. The collected, compacted fume dust is safely contained in large drums for disposal. Our solution delivers clean shop air, reduces HVAC filter load, protects worker health to meet OSHA/WHMIS standards, and centralizes maintenance for lower long-term operating costs.

Call to Action:

Ready to clear the air in your welding workshop for good? LEFILTER's ventilation specialists can design a turnkey centralized system tailored to your floor plan and processes. Request a site survey today.