The Giebel breather, constructed from aluminium, are used for water-free ventilation of water sensitive materials such as hydraulic fluids, mineral and bio-degradable oils, fuels, chemical raw materials
and bulk goods. The modular system DUO-VARIO can be optimally adapted to the operating conditions of a ventilated system. They can be used according ATEX-guideline 94/4/EG (ATEX 95) in zone 1 and zone 21 with gases and dust, and the explosion groups up to IIC and the temperature classes up to T4. The adsorbers do not have their own ignition source.