A device for a valve comprising a fixed part (2; 6) provided with at least one fluid port (214; 634) and a rotatable sleeve (3; 7) provided with at least one bore (33; 72), wherein: the sleeve (3; 7) is structured in a manner allowing it to rotate the bore (33; 72) inline with the fluid port (214; 634) in order to allow a fluid to flow through the fluid port (214; 634) and the bore (33; 72) when the sleeve (3; 7) is in an open position; the sleeve (3; 7) is structured in a manner allowing it to rotate the bore (33; 72) away from the fluid port (214; 634) in order not to allow a fluid to flow through the fluid port (214; 634) when the sleeve (3; 7) is in a closed position; the fixed part (2; 6) and the sleeve (3; 7) form an annulus (92; 94) between the fixed part (2; 8) and the sleeve (3; 7); and the annulus (92; 94) is restricted axially by two packer elements (37; 69) in the axial directions of the sleeve (3; 7) and the fixed part (2; 6), wherein one of the two packer elements (37; 69) is located at one side of the fluid port (214; 634), and the other of the two packer elements (37; 69) is located at the opposite side of the fluid port (214; 634), and wherein the annulus (92; 94) is in fluid communication with the fluid port (214; 634) of the fixed part (2; 6).