Device for applying coating material

摘要

The spray valve needle (7) is continuously-adjustable within a given range by a controller (16). This has a desired value input (17) for the instantaneously-demanded coating flowrate passed by the spray valve (4). It has an actual value input (18) for the mass flowrate passing through a supply section ahead of the nozzle opening (6). An actuator is signaled by the controller, to correct departures.