Abstract: A valve device of an application device for applying fluid to a substrate comprises a valve body, a valve housing with inner chamber and valve seat, a supply fluid chamber, an electromagnetic valve actuating device with valve piston and an adjusting piston. The valve nozzle is detachably mounted on the nozzle side of the valve device. The valve device has a nozzle plate which closes the valve body at the bottom on the nozzle side, with mounting opening for the valve piston. The valve housing is designed in the form of a nozzle orifice which is a closure member that can be fitted on the mounting opening from below and removed. The valve nozzle forms part of the valve housing. The valve piston is exposed through the mounting opening of the nozzle plate for removal and fitting when the closure member is removed. The valve device is provided with at least one rectilinear fluid duct that connects the supply fluid chamber to the valve seat.

Abstract: A valve device of an application device for applying fluid to a substrate comprises a valve body, a valve housing with inner chamber and valve seat, a supply fluid chamber, an electromagnetic valve actuating device with valve piston and an adjusting piston. The valve nozzle is detachably mounted on the nozzle side of the valve device. The valve device has a nozzle plate which closes the valve body at the bottom on the nozzle side, with mounting opening for the valve piston. The valve housing is designed in the form of a nozzle orifice which is a closure member that can be fitted on the mounting opening from below and removed. The valve nozzle forms part of the valve housing. The valve piston is exposed through the mounting opening of the nozzle plate for removal and fitting when the closure member is removed. The valve device is provided with at least one rectilinear fluid duct that connects the supply fluid chamber to the valve seat.

Abstract: Disclosed is an applicator (1) for applying fluid to a substrate, comprising valve mechanisms (21) which are arranged in a row and are each equipped with an application valve nozzle (31), and a distributing fluid chamber (11) that has a fluid intake duct (110). A cleaning valve mechanism (21) which is incorporated into the row of application valve mechanisms (21) and is fitted with a cleaning valve nozzle (30) is associated with the fluid intake duct (110). A flow path (100) for cleaning the fluid chamber (11) is formed between the fluid intake duct (110) and the cleaning valve mechanism (20) in the distributing fluid chamber (11), said flow path (100) being effective when the cleaning valve nozzle (30) is open. Also disclosed is a method for cleaning said applicator (1).