Abstract: A sprinkler system for rail vehicles (SFZ) with at least one liquid container (FBH), which can be connected via a pressure medium line (DML) with a pressure medium container (DMB) and which can be placed under pressure, and with a number of thermally triggerable sprinkler nozzles (SDF, SDD) that are connected with the liquid container via a liquid line (FLL), where in the pressure medium line (DML) between the pressure medium container (DMB) and the liquid container (FBH), there is connected an electromechanical alarm valve (AVE) that is controlled by a fire alarm system (BMA), which alarm valve is closed during routine operation but which is opened in case of an alarm, so that in case of an alarm, the liquid container (FBH) and the liquid line (FLL) leading to the sprinkler nozzles will be pressurized.