A control valve for supplying one or more nozzles with a pressure fluid and preferably for supplying one or more cooling nozzles for spray-cooling one or more components of a combustion engine, 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 for the pressure fluid for reducing the control pressure, wherein the inlet or the outlet exhibits a pilot cross-section which is variable in terms of its size; 1.4 a pilot member 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 control cross-section; 1.5 an electromagnetic device by means of which the pilot member can be moved; and 1.6 a membrane which can be charged with the pressure fluid and deformed, by being charged with the pressure fluid, against a restoring force, 1.7 wherein the pilot member is coupled to the membrane, such that deforming the membrane, against the restoring force, moves the pilot member in the direction of the second pilot position, characterised in that 1.8 the pilot member can be moved into the first pilot position by means of the electromagnetic device, and 1.9 the membrane can be charged with the control pressure and deformed, against the restoring force, by being charged. 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 for the pressure fluid for reducing the control pressure, wherein the inlet or the outlet exhibits a pilot cross-section which is variable in terms of its size; 1.4 a pilot member 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 control cross-section; 1.5 an electromagnetic device by means of which the pilot member can be moved; and 1.6 a membrane which can be charged with the pressure fluid and deformed, by being charged with the pressure fluid, against a restoring force, 1.7 wherein the pilot member is coupled to the membrane, such that deforming the membrane, against the restoring force, moves the pilot member in the direction of the second pilot position, characterised in that 1.8 the pilot member can be moved into the first pilot position by means of the electromagnetic device, and 1.9 the membrane can be charged with the control pressure and deformed, against the restoring force, by being charged.