Patent ID: 7097121
Filing Date: 2006-08-29
Classification: B05B,Y10T

Abstract:
1. A color change valve arrangement for selectively connecting an applicator of a coating plant to a plurality of supply lines for coating material of different selectable colors, the arrangement comprising: a plurality of valve assemblies, each of the plurality of valve assemblies associated with at least one of the selectable colors and each of the plurality of valve assemblies including: a common passage wherein an outlet port of each of the plurality of valve assemblies open into the common passage wherein at least two of the plurality of valve assemblies having valve needle places parallel to each are disposed next to each other along the common passage; and wherein each of the plurality of valve assemblies further comprises means for at least one of amplifying a force exerted by the drive device on the piston and reducing a force in the opposite direction that the drive device is operable to overcome.