Inwelt Portable Soldering Fume Purifier Dust Welding Fume Extraction Machine - 2 Good 2 BinDuring welding, various types of dust and gases are generated, such as welding fumes, iron oxide dust, carbon monoxide, etc. Long term and large inhalation can have an impact on human health leading to chronic fibrosis of lung tissue, commonly known as pneumoconiosis. Integrating the vacuum system onto the welding gun to remove welding fumes generated during the welding process with high negative pressure (portable dust purifiers are required),