Abstract: A valve device includes a valve housing, a first fluid opening, an additional fluid opening, a valve bore having an axial extent along an axial direction, and a plunger disposed within the valve bore and movable along the axial direction. The plunger is movable at least between a first position and a second position. The additional fluid opening is closed in the first position and open in the second position. In the first position, a first sealing portion of the plunger and a second sealing portion of the valve bore engage to form a seal extending a perimeter of the valve bore. In the second position, the first and second sealing portions are completely disengaged. The valve device gradually disengages the first and second sealing portions during an opening phase of the additional fluid opening, during which the plunger is axially moved from the first position to the second position.

Abstract: A valve for an indoor temperature regulating system, includes a fixed valve housing having at least six valve connections and a valve selector for switching between providing a circulating flow from a first fluid source and a second fluid source thereby enabling fluid of different temperatures to a treatment unit. The valve selector includes a disc plate provided with openings and the valve main body is provided with valve openings connected via channels to the valve connections The valve selector and valve main body are slideable against each other. In the first mode valve openings are in register with lower disc plate openings such that two flow paths connecting the first fluid source with the treatment unit are enabled and in the second mode valve openings are in register with lower disc plate openings such that two flow paths connecting the first fluid source with the treatment unit are enabled.