Disclosed is a vacuum valve 10, 10', 10" for a kitchen appliance. The vacuum valve comprises a first component 11, 11', 11", a second component 12, 12', 12" and a sealing 13, 13', 13". The second component is configured to be attached to a power unit 20 of the kitchen appliance, and to be combined with the first component 11, 11', 11", with a sheet 31 at least partially therebetween. The vacuum valve is configured to inhibit, by means of the sealing 13, 13', 13", an air flow through an air channel 14, 14', 14" within the vacuum valve and in a sealing direction D, and to facilitate sucked air A flowing through the air channel 14, 14', 14" in a sucking direction S opposite to the sealing direction D.
Further disclosed are an assembly and a kitchen appliance each comprising such vacuum valve, and a method of utilising the vacuum valve.