A valve comprises a valve housing with at least one fluid port. In the valve housing a valve chamber is formed, in which a closing element axially shiftable by a valve drive is provided, which cooperates with at least one valve seat provided in the valve housing. The valve housing has a first end face to which the valve drive can be coupled, and at least one actuation opening in a second end face of the valve housing opposite to the first end face. The actuation opening extends through the valve housing up to the closing element and is arranged eccentrically in the second end face.