Fluid applicator device for cylinders or rollers of printing machines has nozzle bar with spaced spray nozzles each assigned a mixer chamber having two or more non-return valves for suplying different fluids

摘要

The device has a nozzle bar with spaced spray nozzles (7) each associated with a spring-tensioned non-return valve (8, 9) connected to a fluid-transporting pressure line. Each spray nozzle is assigned a mixer chamber (10) which has at least two non-return valves opening towards same. The pressure lines (11, 12) can convey different fluids. A first non-return valve is connected to a first pressure line and a second such valve to the second pressure line. The pressure lines can be selectively biased in succession or simultaneously.