the relevant control command by the respective user is responded to immediately without any delay in order to produce normal steam the cutoff valve the outlet of the supply line 9 and that the water always has the required water pressure since the water withdrawn from the pressure reservoir 3 is immediately replaced the optimum operating pressure for the entire water storage system is adjustable in the pressure reservoir 3 the pressure reservoir 3 shown in fig1 is only one possible exemplary embodiment of the subject of the invention when the iron is in the operating condition it is switched on whereupon the pump supplying water from the water tank 1 to the pressure reservoir 3 is started simultaneously so that the required amount of water at the necessary operating pressure supplied at the outlet of the supply lines 9 is immediately available to the user this pressure is the same in the entire system and the relevant control command by the respective user is responded to immediately without any delay in order to produce normal steam the cutoff valve 11 is actuated by the manual actuation member 18 and the electric switch 16 is simultaneously closed the electronic pulse circuit 20 thus bridging the switch 8 and driving pump 2 so that a measured amount of water is supplied from the water tank 1 to the evaporation chamber 13 when normal steam is produced the pressure reservoir 3 is.