The delivery of adsorbers V=4, 5 cubic m. in the number of 4 pieces was made for nitrogen unit of the plant HBI JSC "Lebedinsky GOK". The equipment is intended for replacement of vessels of German production. For ease of maintenance of equipment and prompt replacement of the adsorbent in the upper part of the adsorber body the flange connector is installed. Working design documentation was developed on the basis of the Customer's specifications.