- +44 (0) 1756 795028
- 0
The hand-held spray gun works according to the airless principle, i.e. the spray jet is generated exclusively by the material pressure, which forces the material through a nozzle. After exiting the nozzle, the spray jet assumes the shape specified by the nozzle. It is aimed at the workpiece. The effective spray jet is not quite as wide as theoretically possible.
The coating material to be processed is applied to the surface by one person manually guiding the hand-held spray gun over the surface to be coated and triggering the spraying process at the intended point by actuating the trigger. The coating material is fed to the hand-held spray gun in liquid form under high material pressure.
Pulling the trigger toward the main body handle pushes the valve needle backwards against the restoring force of the valve spring. The valve needle slides out of the valve seat of the valve seat screw and thus enables the material flow to the material nozzle. There the material is sprayed as an elliptical cone jet.
The amount of material discharge depends exclusively on the nozzle size and the material pressure!
The size and shape of the jet can only be changed by changing the nozzle. The diameter of the nozzle bore determines the amount of material flow, while the size and geometry of the nozzle opening, which is always elliptical in shape, determine the height and width of the jet.
A large number of airless nozzles are available. They can be obtained from Krautzberger GmbH.
The nozzle can be continuously rotated through 360° in the axis of the spray jet and locked in any position. This allows the angle at which the jet hits the workpiece to be optimally adapted to the respective conditions.
The use is particularly advantageous when comparatively large amounts of material are to be processed per unit of time.
