A method for controlling a supply pressure in a circulation system (100; 200) for a coating agent, comprising: - a pump, - a coating device with at least one delivery point, - a material pressure regulator, - a supply tank, - a pressure regulator and - a control module, wherein the pressure regulator is provided for controlling the material flow of the coating medium pump by means of the control module in such a way that, in the case of a supply pressure regulated in the circulation system (100, 200) in the coating medium, the volume flow at the material pressure regulator is regulated by means of a predefined setpoint in the form of a control pressure, wherein the control pressure can be variably adjusted on the basis of a physical parameter measured in the coating medium as a function of the set supply pressure, so that a continuous pressure control is achieved in the circulation system (100, 200) based on: - a first setpoint with a first associated flow rate and a first control pressure and - at least a second setpoint with a second associated flow rate and a second control pressure, and wherein, in the absence of or reduced discharge of coating agent from the at least one delivery point, the supply pressure is regulated down to a low pressure and the control pressure is set to the second control pressure by means of the material pressure regulator, with the second control pressure and the supply pressure being selected in such a way to achieve a preset volume flow (Vk) in the circulation system (100, 200) and wherein the constant volume flow (Vk) is selected as a function of the properties of the coating agent to be conveyed in such a way that a minimum volume flow (Vmin) required to avoid disturbances in the circulation system (100, 200) is conveyed, characterized in that the control pressure is set - on the basis of flow resistances in the circulation system (100, 200); - and by means of a time control as a function of the set supply pressure. - a pump, - a coating device with at least one delivery point, - a material pressure regulator, - a supply tank, - a pressure regulator and - a control module, wherein the pressure regulator is provided for controlling the material flow of the coating medium pump by means of the control module in such a way that, in the case of a supply pressure regulated in the circulation system (100, 200) in the coating medium, the volume flow at the material pressure regulator is regulated by means of a predefined setpoint in the form of a control pressure, wherein the control pressure can be variably adjusted on the basis of a physical parameter measured in the coating medium as a function of the set supply pressure, so that a continuous pressure control is achieved in the circulation system (100, 200) based on: - a first setpoint with a first associated flow rate and a first control pressure and - at least a second setpoint with a second associated flow rate and a second control pressure, - a first setpoint with a first associated flow rate and a first control pressure and - at least a second setpoint with a second associated flow rate and a second control pressure, and wherein, in the absence of or reduced discharge of coating agent from the at least one delivery point, the supply pressure is regulated down to a low pressure and the control pressure is set to the second control pressure by means of the material pressure regulator, with the second control pressure and the supply pressure being selected in such a way to achieve a preset volume flow (Vk) in the circulation system (100, 200) and wherein the constant volume flow (Vk) is selected as a function of the properties of the coating agent to be conveyed in such a way that a minimum volume flow (Vmin) required to avoid disturbances in the circulation system (100, 200) is conveyed, characterized in that the control pressure is set - on the basis of flow resistances in the circulation system (100, 200); - and by means of a time control as a function of the set supply pressure. - on the basis of flow resistances in the circulation system (100, 200); - and by means of a time control as a function of the set supply pressure.