Control valve for adjusting a process fluid flow of a process plant, wherein the control valve comprises a valve housing with an inlet and an outlet for the process fluid flow as well as a valve component arrangement for a control valve for adjusting a process fluid flow of a process plant, the control valve having a valve housing with an inlet and an outlet for the process fluid flow, comprising: - a valve housing portion having a passage for the process fluid flow extending along a longitudinal axis, - a valve component mountable on the valve housing portion, - a seal for circumferentially sealing between the valve housing portion and the valve component, and - a contact abutment (21, 23, 25, 27) to be disposed in the axial direction between the seal and the valve housing portion and which is movable in a pre-assembled state relative to the valve housing portion and relative to the valve component, wherein in an assembled state the seal is inserted into an annular-groove-shaped seal receptacle limited by the valve component, the valve housing portion and the contact abutment (21, 23, 25, 27); wherein the contact abutment (21, 23, 25, 27) is held axially movable to the valve component by a carrier (31, 33, 35, 37), wherein the carrier (31, 33, 35, 37) is designed to carry the contact abutment (21, 23, 25, 27) with the valve component when the valve component is removed, characterized in that the valve housing portion, the valve component and the contact abutment (21, 23, 25, 27) are matched to each other in such a way that the seal receptacle is reduced in size when the valve component is mounted on the valve housing portion, wherein the contact abutment (21, 23, 25, 27) is supported on the valve housing and wherein the contact abutment (21, 23, 25, 27) undergoes a relative movement with respect to the valve component. - a valve housing portion having a passage for the process fluid flow extending along a longitudinal axis, - a valve component mountable on the valve housing portion, - a seal for circumferentially sealing between the valve housing portion and the valve component, and - a contact abutment (21, 23, 25, 27) to be disposed in the axial direction between the seal and the valve housing portion and which is movable in a pre-assembled state relative to the valve housing portion and relative to the valve component, wherein in an assembled state the seal is inserted into an annular-groove-shaped seal receptacle limited by the valve component, the valve housing portion and the contact abutment (21, 23, 25, 27); wherein the contact abutment (21, 23, 25, 27) is held axially movable to the valve component by a carrier (31, 33, 35, 37), wherein the carrier (31, 33, 35, 37) is designed to carry the contact abutment (21, 23, 25, 27) with the valve component when the valve component is removed, characterized in that the valve housing portion, the valve component and the contact abutment (21, 23, 25, 27) are matched to each other in such a way that the seal receptacle is reduced in size when the valve component is mounted on the valve housing portion, wherein the contact abutment (21, 23, 25, 27) is supported on the valve housing and wherein the contact abutment (21, 23, 25, 27) undergoes a relative movement with respect to the valve component.