A purging and/or ventilation valve for an operating liquid container having the following features: - the purging and/or ventilation valve comprises a housing with an upper part and a lower part; - the lower part is connectable to the upper part in such a manner that the housing comprises a receiving volume which is defined by a partition wall formed between the upper part and the lower part; - the lower part comprises at least one first valve housing with a first valve housing interior and a second valve housing with a second valve housing interior, wherein a first valve body is arranged in the first valve housing interior so as to be positionally changeable and a second valve body is arranged in the second valve housing interior so as to be positionally changeable; - the first valve housing comprises a first communication opening for fluid exchange between the first valve housing interior and an operating liquid container interior; - the second valve housing comprises a second communication opening for fluid exchange between the second valve housing interior and the operating liquid container interior - a first ventilation opening, by means of which the receiving volume and the first valve housing interior are fluidically connectable, and a second ventilation opening, by means of which the receiving volume and the second valve housing interior are fluidically connectable, are arranged in the partition wall; and - the first ventilation opening and the second ventilation opening are arranged substantially at an identical housing height (h) with reference to the longitudinal extension of the housing, - characterized in that the upper part comprises at least one output opening which interrupts the wall of the upper part and provides a fluid connection from the receiving volume to the surrounding area, and wherein the output opening comprises an overpressure and/or negative pressure valve. - the purging and/or ventilation valve comprises a housing with an upper part and a lower part; - the lower part is connectable to the upper part in such a manner that the housing comprises a receiving volume which is defined by a partition wall formed between the upper part and the lower part; - the lower part comprises at least one first valve housing with a first valve housing interior and a second valve housing with a second valve housing interior, wherein a first valve body is arranged in the first valve housing interior so as to be positionally changeable and a second valve body is arranged in the second valve housing interior so as to be positionally changeable; - the first valve housing comprises a first communication opening for fluid exchange between the first valve housing interior and an operating liquid container interior; - the second valve housing comprises a second communication opening for fluid exchange between the second valve housing interior and the operating liquid container interior - a first ventilation opening, by means of which the receiving volume and the first valve housing interior are fluidically connectable, and a second ventilation opening, by means of which the receiving volume and the second valve housing interior are fluidically connectable, are arranged in the partition wall; and - the first ventilation opening and the second ventilation opening are arranged substantially at an identical housing height (h) with reference to the longitudinal extension of the housing, - characterized in that