Abstract: An application device for applying a flowable medium onto a substrate, having a discharge valve having a closure member which, in its open position, releases a metering opening of the discharge valve, such that the flowable medium can flow through the metering opening in the direction of the substrate, wherein the closure member is movable by an electromagnet of the discharge valve from a closing position, in which it closes the metering opening, to an open position, and having a main control unit, which is connected to the discharge valve, and which delivers electrical output voltage signals which moves and maintains the closure member to the open position. A modification unit is arranged between the main control unit and the discharge valve, which is configured such it receives output voltage signals from the main control unit, modifies these signals and relays the latter in a modified form to the electromagnet.

Abstract: A valve for flowable media having a valve housing and an elongate closure member arranged therein and which can be axially moved in a medium channel of the valve by a controllable actuator and which in a closed position abuts a valve seat and closes a discharge opening connected to the medium channel, and which is connected to a sealing element to seal the medium channel, namely, a part-piece of an elongate bellows, which moves in an axial direction during movements of the closure member and which is a hollow member made of metal, wherein another part-piece of the bellows is fixedly supported in the valve. The relative axial position between the bellows and the valve seat is adapted to a production-related deviation of the longitudinal dimension of the bellows used from a desired longitudinal dimension so that this deviation is compensated for.

Abstract: A valve arrangement for applying flowable medium to a substrate, having a main valve body with a medium channel for flowable media which is able to be closed by a movable closure member and to which a nozzle part having a nozzle opening of the valve arrangement is connected, wherein the valve arrangement has a pivotable lever movable out of a fastening position and into a releasing position, wherein the pivotable lever, during the movement from the fastening position into the releasing position, exerts a detaching force on the nozzle part in order to support the detachment of the nozzle part from the main valve body. In a first phase of its movement out of the fastening position and into the releasing position, the lever is movable in a straight line and exerts the detaching force on a push-off surface of the nozzle part, and entrains the nozzle part.