Catalogue 6 - STAUFF Valves

110 www.stauff.com/6/en/#110 E Ball Valves for Paints and Lacquers Ball valve application in airless spraying device. Ball valves for paints and lacquers must be resistant against the varying viscosities and dye particles in the fluid. The sealing material is the determining factor to guarantee an optimal lifetime. The choice of the seals is depending on the required operating cycles and after consideration of the pressure differential. In case of operating the ball valve without differential pressure, standard ball seats can be used. Ball Valves for Isocyanates To maintain or repair the valve, it is necessary that the return and non-return lines in colour spraying plants can be blocked off. Due to the opening of the bypass ball valve, an un-pressurised circulation has to be guaranteed. The locking or opening of the bypass line is carried out manually, thereby incorrect operation is impossible. Isocyanates react with humidity and develop crystalline particles. To avoid that the isocyanates get in contact with environmental humidity, the ball valves have to be completely leakproof. On the other hand the crystalline particles in the fluid mustn’t damage the ball seats. Special seats are used because standard plastic seats can be damaged by crystalline particles. With these sealing system from STAUFF a ball valve provides extended lifetime. These valves are being used in the foaming systems and pasters. Ball valves are also available with heating devices and temperature sensors in order to keep the temperature regulated during the manufacturing process. Equipped with actuators and limit switches STAUFF ball valves being operated in many instances by robots. To increase the lifetime we recommend a seat version with erosion protection ring. For a further increase of the lifetime and also a reduction of repair and maintenance time, a metal seat is the best solution. The specified material combinations are suitable for most applications. The chemical resistance to the used solvent has to be tested when selecting the ball valve. Catalogue 6 § Edition 06/2023 Special Application Valves