Multi-Way Valve

A multi-way valve comprising:

• at least three valve connections, at least one pair of adjacent valve connections being connected fluidically in a first valve position and being separated fluidically in a second valve position, and at least one further pair of adjacent valve connections being separated fluidically in the first valve position and being connected fluidically in the second valve position;
• an upper part;
• a lower part;
• and
• a plate-shaped central part connected to the upper part via an interposing first membrane and connected to the lower part with the interposition of a second membrane;
• wherein, for each valve connection, the central part includes a channel system having a first opening on an upper side of the central part, includes a second opening on a lower side of the central part and includes a third opening for connection with a first valve connection of the at least three valve connections;
• wherein the upper part, on its side facing the first membrane, includes a recess for each pair of adjacent valve connections connected fluidically in the first valve position in each case, said recess being opposite to first openings assigned to the pair of adjacent valve connections on the upper side of the central part, such that upon deflection into the recess, the first membrane releases the first openings and closes the first openings when pressure is applied with a control fluid in the recess;
• wherein the lower part, on its side facing the lower membrane, includes a recess for each further pair of adjacent valve connections connected fluidically in the second valve position, said recess being opposite to openings assigned to the further pair on the lower side of the central part such that, upon deflection into the recess, the second membrane releases the second openings and closes the second openings when pressure is applied with the control fluid in the recess;
• wherein the at least three valve connections are mounted on at least one of (i) the upper part and (ii) the lower part;
• wherein the third openings, for connection with the first valve connection of the at least three valve connections, contained in the central part lie on the upper side or lower side of the central part;
• wherein the first or second membrane with the third openings contains aligned passages;
• and
• wherein the upper part or lower part contains channels for fluidic connection of the valve connections with the passages.