Hydrodynamic machine, in particular hydrodynamic converter, 1.1 having a working chamber which is able to be filled with a working medium, and in which at least one bladed pump wheel and one bladed turbine wheel are arranged, in order for torque and/or drive power to be transmitted hydrodynamically from the pump wheel to the turbine wheel; 1.2 having a working medium inflow for feeding working medium into the working chamber and having a working medium outlet for discharging working medium from the working chamber; 1.3 having a regulating valve which is provided in the working medium inflow or in a bypass for working medium, which bypass branches off from the working medium inflow, wherein, by way of the regulating valve, the quantity of working medium flowing into the working chamber is able to be varied by setting of a flow cross section for working medium flowing through the regulating valve; wherein 1.4 the regulating valve is connected to the working medium inflow and/or to the working medium outlet, and is actuated, in such a way that the flow cross section of the regulating valve is set variably in a manner dependent on the working medium pressure in the working medium inflow and in a manner dependent on the working medium pressure in the working medium outlet; characterized in that the regulating valve is arranged in the bypass and has a valve body which is preloaded by means of a preload element and which interacts with a valve seat for delimitation and setting of the flow cross section, wherein the preload element acts on the valve body in a closing direction of the regulating valve, and the valve body is subjected to force counter to the preload force of the preload element in a manner dependent on the working medium pressure in the working medium inflow and in the working medium outlet, and in that the regulating valve has a first working medium port, a second working medium port and a working medium drain, wherein the first working medium port is connected in a working medium-conducting manner to the working medium inflow, the second working medium port is connected in a working medium-conducting manner to the working medium outlet, the first working medium port is connected in a working medium-conducting manner via the flow cross section to the working medium drain, and the first working medium port and the second working medium port are each connected in a working medium-conducting manner to a separate or a common effective surface (14, 15) on the valve body in order for the valve body to be subjected to force counter to the preload force of the preload element. 1.1 having a working chamber which is able to be filled with a working medium, and in which at least one bladed pump wheel and one bladed turbine wheel are arranged, in order for torque and/or drive power to be transmitted hydrodynamically from the pump wheel to the turbine wheel; 1.2 having a working medium inflow for feeding working medium into the working chamber and having a working medium outlet for discharging working medium from the working chamber; 1.3 having a regulating valve which is provided in the working medium inflow or in a bypass for working medium, which bypass branches off from the working medium inflow, wherein, by way of the regulating valve, the quantity of working medium flowing into the working chamber is able to be varied by setting of a flow cross section for working medium flowing through the regulating valve; wherein 1.4 the regulating valve is connected to the working medium inflow and/or to the working medium outlet, and is actuated, in such a way that the flow cross section of the regulating valve is set variably in a manner dependent on the working medium pressure in the working medium inflow and in a manner dependent on the working medium pressure in the working medium outlet; characterized in that the regulating valve is arranged in the bypass and has a valve body which is preloaded by means of a preload element and which interacts with a valve seat for delimitation and setting of the flow cross section, wherein the preload element acts on the valve body in a closing direction of the regulating valve, and the valve body is subjected to force counter to the preload force of the preload element in a manner dependent on the working medium pressure in the working medium inflow and in the working medium outlet, and in that the regulating valve has a first working medium port, a second working medium port and a working medium drain, wherein the first working medium port is connected in a working medium-conducting manner to the working medium inflow, the second working medium port is connected in a working medium-conducting manner to the working medium outlet, the first working medium port is connected in a working medium-conducting manner via the flow cross section to the working medium drain, and the first working medium port and the second working medium port are each connected in a working medium-conducting manner to a separate or a common effective surface (14, 15) on the valve body in order for the valve body to be subjected to force counter to the preload force of the preload element.