Flushing pistons that are propelled through hose lines are called “pigs.” They provide clean separation between the preceding paint and the solvent, air, or subsequent paint. This results in extremely short paint changeover times in automated systems, minimal paint waste, minimal solvent consumption, and excellent process quality. Rubber pigs often reach their limits at high

In paint spray guns, a distinction is made between horn air and atomizing air. The needle, on the other hand, is actuated by control air. This acts on a piston against a preloaded spring. Control pistons are also required in paint valves. These are often complex assemblies with numerous seals and channels that separate the

Paint valves often seal using valve seats with conical sealing surfaces. A hard/soft combination with a stainless steel valve seat has proven advantageous. The correct selection of the plastic’s strength (PVDF, PEEK, UHMW-PE) is critical and depends on the closing force of the piston. With the aid of a metal carrier onto which a plastic

To seal lateral movement between flat surfaces, we have developed various types of gate valve seals that meet all the requirements for lubrication-free sealing. This enables tolerance compensation, low friction, minimal dead space, LABS-free performance, and reliable continuous operation. Machining also makes it possible to accommodate virtually any installation space and develop a backward-compatible sealing

Dead-space-free design and low friction are critical requirements in these applications. In most cases, the seal is designed as a multifunctional lip seal, which can also incorporate static sealing beads, guiding surfaces, and disassembly threads. Occasionally, a spring-energized seal or spring-energized jacket seal is used. However, these designs may present disadvantages in terms of dead