A powder distribution device for transporting and mixing a fine powder with a gas is disclosed. The device presents a distribution member forming a connection between a source of fine powder and a discharge opening. The distribution member has a first inlet portion (10) and an outlet portion (12) for a stream of a first gas (1) mixed with the fine powder. The main body of the distributio member constitutes a porous body portion (16) being surrounded by a second gas (2). If a pressure gradient is created between the second gas (2) and the first gas (1), i.e., the first gas (1) being at a slightly lower pressure, the second gas (2) will leak through the porous body (16) and thereby preventing powder, in the mix of the first gas and fine powder, from sticking or clogging within the distribution member, which thereby forms an active non-sticking wall relative to of the fine powder.