The ATEX certified vacuum cleaner designed for inertization of reactive and potentially explosive metal powders with liquid is a specialized machine that ensures safety and reliability in the 3D printing industry. The liquid bath, consisting of water or oil, eliminates the risk of ignition or explosion when aspirating metal powders. The machine’s safety features include a special float that interrupts suction in case the inerting liquid is absent or too little, ensuring operator safety. The brushed stainless steel components offer a longer lifespan and prevent the risk of shock ignition. Additionally, the safety valve located on the tank ensures the expulsion of hydrogen concentration in case of using water as an inerting liquid for recovering aluminum powders. The vacuum cleaner’s coalescence filter prevents vapors from being generated due to turbulence produced by air reflux, further enhancing the machine’s safety and reliability.