A control valve for supplying one or more cooling nozzles, for spray-cooling one or more components of a combustion engine, with a pressure fluid, said control valve comprising: 1.1 a pressure port, a working port and a primary control cross-section through which the pressure fluid can flow from the pressure port to the working port; 1.2 a valve piston which can be charged with the pressure fluid and axially moved back and forth between a minimum flow position, which can in particular be a closing position, and a maximum flow position, in order to vary the size of the primary control cross-section; 1.3 a control chamber which comprises an inlet for the pressure fluid, for generating a control pressure which acts axially on the valve piston, and an outlet (7; 9) for the pressure fluid for reducing the control pressure, wherein the inlet or the outlet (7; 9) exhibits a pilot cross-section which is variable in terms of its size; 1.4 a pilot member (10; 22) which can be moved back and forth between a first pilot position and a second pilot position, in order to vary the size of the pilot cross-section; and 1.5 an electromagnetic device by means of which the pilot member (10; 22) can be moved into the first pilot position and optionally into the second pilot position, 1.6 wherein the valve piston can be charged with the pressure fluid from the pressure port on a front end-facing surface, and a rearward end-facing surface of the valve piston facing axially away from the front end-facing surface limits the control chamber, such that the fluid pressure force which can be generated at the valve piston by the pressure fluid from the pressure port acts counter to the fluid pressure force which can be generated at the valve piston by the control pressure, 1.7 and wherein a connecting channel which extends through the valve piston from an end-facing side of the valve piston up to and into the control chamber forms the inlet of the control chamber. 1.1 a pressure port, a working port and a primary control cross-section through which the pressure fluid can flow from the pressure port to the working port; 1.2 a valve piston which can be charged with the pressure fluid and axially moved back and forth between a minimum flow position, which can in particular be a closing position, and a maximum flow position, in order to vary the size of the primary control cross-section; 1.3 a control chamber which comprises an inlet for the pressure fluid, for generating a control pressure which acts axially on the valve piston, and an outlet (7; 9) for the pressure fluid for reducing the control pressure, wherein the inlet or the outlet (7; 9) exhibits a pilot cross-section which is variable in terms of its size; 1.4 a pilot member (10; 22) which can be moved back and forth between a first pilot position and a second pilot position, in order to vary the size of the pilot cross-section; and 1.5 an electromagnetic device by means of which the pilot member (10; 22) can be moved into the first pilot position and optionally into the second pilot position, 1.6 wherein the valve piston can be charged with the pressure fluid from the pressure port on a front end-facing surface, and a rearward end-facing surface of the valve piston facing axially away from the front end-facing surface limits the control chamber, such that the fluid pressure force which can be generated at the valve piston by the pressure fluid from the pressure port acts counter to the fluid pressure force which can be generated at the valve piston by the control pressure, 1.7 and wherein a connecting channel which extends through the valve piston from an end-facing side of the valve piston up to and into the control chamber forms the inlet of the control chamber.