Hydraulic system for tipping at least one tipping body located on a tipping vehicle, comprising: - at least one hydraulic cylinder as a tipper drive unit for the tipping body, - at least one tipping valve for controlling a lifting operation, a hold operation and a lowering operation of the hydraulic cylinder, - at least one hydraulic sink and at least one hydraulic source, and - at least one valve arrangement hydraulically connected at least to the hydraulic cylinder, the tipping valve and the hydraulic sink, via which valve arrangement, depending on the operating states of the tipping valve, on the basis of an output flow rate of the hydraulic source, hydraulic fluid can be supplied at a supply flow rate to the hydraulic cylinder for the lifting operation and hydraulic fluid can be drained at a drainage flow rate from the hydraulic cylinder to the hydraulic sink, while bypassing the tipping valve, for the lowering operation; characterised in that the drainage flow rate can be continuously controlled by means of the tipping valve, for which the valve arrangement and the tipping valve are designed and hydraulically interconnected as follows: - in order to bring about the lowering operation, the hydraulic fluid can be drained at a control flow rate from the valve arrangement to the hydraulic sink via the tipping valve, - by means of the valve arrangement, the drainage flow rate is controlled depending on the control flow rate through the tipping valve, meaning that, by means of the tipping valve, the discharge flow rate can be controlled according to actuation of the tipping valve, - the valve arrangement comprises at least one proportional valve by means of which the resulting drainage flow rate depends continuously on the control flow rate. - at least one hydraulic cylinder as a tipper drive unit for the tipping body, - at least one tipping valve for controlling a lifting operation, a hold operation and a lowering operation of the hydraulic cylinder, - at least one hydraulic sink and at least one hydraulic source, and - at least one valve arrangement hydraulically connected at least to the hydraulic cylinder, the tipping valve and the hydraulic sink, via which valve arrangement, depending on the operating states of the tipping valve, on the basis of an output flow rate of the hydraulic source, hydraulic fluid can be supplied at a supply flow rate to the hydraulic cylinder for the lifting operation and hydraulic fluid can be drained at a drainage flow rate from the hydraulic cylinder to the hydraulic sink, while bypassing the tipping valve, for the lowering operation; - in order to bring about the lowering operation, the hydraulic fluid can be drained at a control flow rate from the valve arrangement to the hydraulic sink via the tipping valve, - by means of the valve arrangement, the drainage flow rate is controlled depending on the control flow rate through the tipping valve, meaning that, by means of the tipping valve, the discharge flow rate can be controlled according to actuation of the tipping valve, - the valve arrangement comprises at least one proportional valve by means of which the resulting drainage flow rate depends continuously on the control flow rate.