Multi-way valve having at least three valve connections (6a-6j), of which at least one pair of adjacent valve connections is connected fluidically in a first valve position and is separated fluidically in a second valve position and at least one further pair of adjacent valve connections is separated fluidically in the first valve position and is connected fluidically in the second valve position, having an upper part, a lower part and a plate-shaped central part, which is connected with the upper part with the interposition of a first membrane and with the lower part with the interposition of a second membrane, wherein - for each valve connection (6a-6j) the central part contains a channel system with a first opening on the upper side of the central part, a second opening on the lower side of the central part and a third opening for connection with the valve connection, - the upper part on its side facing the first membrane contains a recess for each pair of adjacent valve connections connected fluidically in the first valve position in each case, which recess is opposite to the first openings (8a, 8b) assigned to the pair (6a, 6b) on the upper side of the central part, so that upon deflection into the recess the first membrane releases the first openings (8a, 8b) and closes the first openings (8a, 8b) when pressure is applied with a control fluid in the recess, and - on its side facing the lower membrane the lower part contains a recess for each further pair of adjacent valve connections connected fluidically in the second valve position, which recess is opposite to the openings (9b, 9c) assigned to the further pair (6b, 6c) on the lower side of the central part, so that upon deflection into the recess the second membrane releases the second openings (9b, 9c) and closes the second openings (9b, 9c) when pressure is applied with the control fluid in the recess, characterised in that - the valve connections (6a-6j) are mounted on the upper part and/or the lower part, - the third openings,for connection with the valve connections, contained in the central part lie on the upper side or lower side of the central part, - the first or second membrane (4, 5) with the third openings contains aligned passages and - the upper part or lower part contains channels for fluidic connection of the valve connections with the passages. - for each valve connection (6a-6j) the central part contains a channel system with a first opening on the upper side of the central part, a second opening on the lower side of the central part and a third opening for connection with the valve connection, - the upper part on its side facing the first membrane contains a recess for each pair of adjacent valve connections connected fluidically in the first valve position in each case, which recess is opposite to the first openings (8a, 8b) assigned to the pair (6a, 6b) on the upper side of the central part, so that upon deflection into the recess the first membrane releases the first openings (8a, 8b) and closes the first openings (8a, 8b) when pressure is applied with a control fluid in the recess, and - on its side facing the lower membrane the lower part contains a recess for each further pair of adjacent valve connections connected fluidically in the second valve position, which recess is opposite to the openings (9b, 9c) assigned to the further pair (6b, 6c) on the lower side of the central part, so that upon deflection into the recess the second membrane releases the second openings (9b, 9c) and closes the second openings (9b, 9c) when pressure is applied with the control fluid in the recess, - the valve connections (6a-6j) are mounted on the upper part and/or the lower part, - the third openings,for connection with the valve connections, contained in the central part lie on the upper side or lower side of the central part, - the first or second membrane (4, 5) with the third openings contains aligned passages and - the upper part or lower part contains channels for fluidic connection of the valve connections with the passages.