Valve assembly for controlling material flow in a coating plant

摘要

The arrangement has a valve unit with a first channel for coating material, an opening forming a valve seat, a valve needle with a sealing surface and a second channel transverse to the needle axis on the other side of the valve seat. The second channel has an elongated cross-section in the plane perpendicular to its straight channel axis whose longitudinal direction is transverse to the needle axis. The narrow side of the cross-section is round. The arrangement has a valve unit (1) for controlling the material flow with a first channel (10) for the coating material, an opening (14) connected to the first channel forming a valve seat (16), a valve needle (6) movable coaxial relative to the valve seat with a sealing surface (18) and a second channel (40) transverse to the needle axis on the other side of the valve seat from the first channel. The second channel has an elongated cross-section in the plane perpendicular to its straight channel axis whose longitudinal direction is transverse to the needle axis. The narrow side of the cross-section is round.