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WALTHER Spritz- und Lackiersysteme GmbH

Kärntner Str. 18-30
D-42327 Wuppertal

+49 202 / 787-0
202 / 787 - 2217

A member of WAGNER GROUP

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Application technology

Spray guns and coating systems

Walther PILOT develops and manufactures top-quality products in application technology. The manual and automatic spray guns are produced at the headquarters at Wuppertal. In spraying one can distinguish between the air atomization (pneumatic spraying) and the airless (hydraulic spraying) processes. In the atomization process, distinction is based on the pressure used: low-pressure (0.7 bar, HVLP), medium pressure (1.3 bar, HVLPplus) and conventional (high-pressure air atomization at 4 to 6 bar). The painting process starts with choosing the appropriate material and placing it in the material container. From that point it is moved to the material nozzle in the spray gun. Located along the route taken by the material is the material needle valve; it regulates the flow of material. The  atomization air flows around the material as it exits the nozzle and divides it into miniature droplets. The spray jet is created.

The source of energy for atomization is the pressurized air which enters the pistol through the air connector. The amount of air is controlled by the air volume regulator while the width of the spray jet is controlled at the round and broad spray regulator. The spray gun is now ready for use. To initiate atomization, the trigger is first retracted slightly. Thus the air valve (poppet valve) built into the air regulation system is opened. The path for the air is now free (preparatory air flow). When the trigger is pulled further, the material needle valve retracts from the material nozzle. The path for the material is also free. Matching the pattern of the spray jet to the object being painted is handled with infinite regulation between round and broad spray. The application speed will have to be matched to the spray width. When the round/broad spray regulator is opened, pressurized air is passed through the two horns on the air cap; this air widens the round spray. This regulating screw is closed when the round spray pattern is desired. Additional parameters (material quantity) can be determined by selecting the nozzle size.

 

Marking systems

Color marking intended to make quality standards visible or for process control are an essential component in modern production systems. That is why WALTHER offers custom-made systems and high-quality components letting you adopt forward-looking marking technology.

These systems work with small amounts of paint and high precision. Consequently, only those automatic spray guns can be used which feature extremely short switching times. The repeatability of these spray guns ensures that – even in the case of higher throughput speed – every mark is in exactly the right position.

We offer you – from the selection of paint to the application and control technology – the best possible results for you.

On-the-dot quality – in every respect!

 

Adhesive application systems

Handling adhesives often places very special requirements on the spray guns. The WALTHER company recognized this quite early in its history and developed a product range tailored especially to the requirements of applying adhesives. Although the spray guns user for adhesive application are externally similar to the ones used for painting, here again it is the “inside values” that count.

In addition to special needles, nozzles and a wide selection of differing air heads, modified gaskets and spray gun bodies are used. Thus WALTHER is, for instance, the only manufacturer of spray guns for  adhesive application with a transition-free material channel made of stainless steel. This is extremely  important in the processing of many dispersion adhesives! In addition, you will also receive special spray guns for processing 2-component dispersion adhesives in which the adhesive and the activator are mixed in the spray jet. To round out our line of spray guns, WALTHER also offers you guns to extrude liquid and pasty adhesives.

It goes without saying that we offer not only application technology. We can also provide customized answers to the question: “How do I get the adhesive from the factory drum to the spray gun.”

Although the adhesive spray guns made by WALTHER work with a minimum of overspray, there is no fog-free spraying. Please consult with our specialists! For many decades now the WALTHER company has been in ongoing, close contact with all the renowned adhesive manufacturers. And if questions should need to be explored, we use our modern applications laboratory to select not only the proper equipment, but also the right parameters. We would be glad to have you look over our shoulders.

 

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