FIELD: household appliances.SUBSTANCE: laundry treating machine comprises a washing container into which the laundry to be processed is loaded, a treatment device for treating laundry using water, interacting with the washing container, a first supply channel connected to a water supply network and a processing device comprising a vertical portion with an air gap, formed between the coaxially located end of the upper tube and the end of the lower tube to prevent counterflow of the washing liquid and its entry into the water supply network.EFFECT: invention for prevention of the counterflow of washing liquid and its entry into the water supply network.10 cl, 7 dwg