Attemperator and a use of a such

An attemperator including a pipe section (3) and a liner pipe section (4) arranged within the pipe section (3) and being attached thereto, the pipe section (3) having an internal wall surface (33) and the liner pipe section (4) having an external wall surface (43), which internal wall surface (33) and external wall surface (43) form a gap (6) between them along at least a major part of the axial extension of the liner pipe section (4), which pipe section (3) and liner pipe section (4) each has an inlet end (31, 41) for connection to a steam supply and an outlet end (32, 42) for steam, and which attemperator is provided with water injection means (2) arranged for supplying water into the interior of the liner pipe section (4), the inlet end (41) of the liner pipe section (4) having an outwardly extending wall portion (44) forming an outer circumferential zone (45), which zone (45) is adjacent or in contacts with the internal wall surface (33) of the pipe section (3) wherein there is provided at least one opening (47) at the inlet end (41) of the liner pipe section (4) arranged to allow steam to enter the space formed by the gap (6) between said internal wall surface (33) and said external wall surface (43), wherein the at least one opening (47) is a plurality of openings, and wherein the liner pipe section (4) is attached to the pipe section (3) by a clamp connection means (5) adjacent the outlet end (42) of the liner pipe section (4) which clamp connection means (5) is fastened to the interior wall surface (33) of the pipe section (3) and has an inner surface (52) that abuts the external wall (43) of the liner pipe section (4).