| 摘要 |
<p>The colour change valve arrangement for the selective connecting of an application component of a coating plane to feed lines for coating material has valve unit for the optional colours each with an outlet orifice for coating material flowing to the application component, forming a valve seat, a movable valve needle (20) with a sealing face, at least one piston (11) connected to the needle, and a device formed especially by a spring (13) which exerts on the valve needle a force directed in opposition to the pressure of the pressure medium (DL) acting on the piston.</p> |
