Abstract: A valve device for operation with a refrigerant having a valve body bushing with a first axial section provided for insertion into a valve block, in which a valve body chamber with a valve needle guided axially therein is formed, a spindle drive with a magnetized rotor shaft, which is supported by an anti-friction bearing and coupled to the valve needle wherein a rotation of the rotor shaft causes an axial movement of the valve needle in the valve body bushing, and a capsule element which is open on one side, in which the spindle drive and a second axial section of the valve body bushing are received, wherein the capsule element can be fastened to the valve block by an actuator receiving it for driving the rotor shaft wherein the first axial section is received in the valve block in a fluid-tight manner.