Valve and valve arrangement

A valve comprising:

• a valve housing including a housing lid, a housing bottom, and an intermediate housing arranged between the housing lid and the housing bottom, the valve housing enclosing a valve chamber including a flow chamber and an actuating chamber, the valve housing defining at least one valve opening extending to the actuating chamber from the flow chamber;
• at least one actuating element being located in the actuating chamber and being movable between a closing position to close the valve opening and an opening position to release the valve opening, an SMA element made of a shape memory alloy being configured to operate the actuating element in the opening direction, a first end of the actuating element being connected to a valve element and a second end of the actuating element being connected to at least one of the valve housing and a base plate, a first end and a second end of the SMA element being electrically connected to a printed circuit board and a middle section of the SMA element being fixed to the actuating element, the SMA element configured with two parts extending substantially parallel to one another;
• the flow chamber and the actuating chamber being separated by a separating wall defining the valve opening so that a fluid flowing through the valve when the actuating element is actuated is guided through the flow chamber, a first area of the flow chamber and a second area of the flow chamber being connected via at least one of the valve opening and a connecting channel, the at least one of the valve opening and the connecting channel being closed when the actuating element is in the closing position and being released when the actuating element is in the opening position;
• the first area of the flow chamber being attachable to an air supply unit to supply air to the flow chamber, the second area of the flow chamber being attachable to a media reservoir, the second area of the flow chamber being connectable to atmosphere to release air from the flow chamber via an opening;
• an actuator located inside the second area of the flow chamber having a first end section and a second end section, the actuator being pivotable on the valve housing via the second end section and the first end section being coupled to the actuating element adjacent the first end of the actuating element so that the opening to the atmosphere is released when the actuating element is in the closing position and the opening is closed when the actuating element is in the opening position.