The invention concerns a steam dryer for evaporating of water and/or other liquid from wet materials or evaporating of materials in a liquid state. The dryer comprises a cylindrical rotatable drum having a feed end and a discharge end; a plurality of steam pipe elements inserted in the drum, wherein each steam pipe element comprises axial pipes parallel to a longitudinal direction of the drum and interconnected by transverse intermediate pipes, and the steam pipe elements are rotatable with the drum; a stationary end chamber and a steam distributor manifold arranged at the discharge end area of the drum; conveyance means disposed at the feed end of the drum for supplying the wet materials or the materials in a liquid state into the steam dryer for evaporating. The stationary end chamber is arranged at the discharge end area of the drum in the axial direction between the discharge end plate and the feed end plate such that the discharge end plate is situated outside of the discharge end chamber. The discharge end chamber surrounds a portion of the drum and it has a lower opening to discharge dried material or remaining liquid and an upper opening to discharge vapour from the drum. The steam distributor manifold is arranged at the discharge end of the drum outside of the discharge end plate.