Valve and Valve Arrangement

The invention relates to a valve and a valve device. Valve housing, the shell comprises a shell cover, a shell bottom and a middle shell arranged between the shell cover and the shell bottom. Whereinthe valve housing encloses a valve chamber comprising a flow chamber and an actuation chamber, wherein the valve housing has at least one valve opening leading from the flow chamber to the actuating chamber, and wherein the at least one actuating element, the wire-or strip-shaped SMA element made of shape memory alloy, the return element and the circuit board are arranged in the actuating chamber,the actuating element is axially movable between a closed position, in which the valve opening is closed, and an open position, in which the valve opening is open. The SMA element is used for actuating the execution element in the opening direction. The reset element is used for moving the execution element in the closing direction. Wherein the SMA element is fixed to the actuator element by means of an intermediate porti