Abstract: A coating system for coating objects having an application device and a supply system which supplies the application device with a liquid material. The supply system includes at least one base supply device with a piggable supply line which extends between a first pigging station and a second pigging station and can be connected to one of multiple material sources by a supply unit. The piggable supply line is a piggable primary supply line which can be connected to a discharge line of the supply unit by a valve unit. A piggable secondary supply line is provided which is connected to the valve unit and is connected to a secondary pigging station at the end remote from the valve unit. The valve unit is designed as a multi-way valve such that the discharge line of the supply unit can be at least selectively connected to the primary supply line (68.

Abstract: A changing device for coating media having a plurality of supply units. The device includes an electric valve device with each supply unit having an electric valve unit which opens and closes a flow channel through which a medium may be supplied in response to a control signal. The valve device includes a control system which has a switching device for each supply unit, each switching device selectively allowing or blocking a control signal from reaching a respective valve unit. The valve device also includes a triggering device which is carried by at least one coupling unit which couples the plurality of supply units to an application device. The triggering device triggers the switching device to allow the control signal through to a supply unit when the coupling unit is connected to the supply unit in a fluid-tight manner.

Abstract: A coating system for coating objects having an application device and a supply system which supplies the application device with a liquid material. The supply system includes at least one base supply device with a piggable supply line which extends between a first pigging station and a second pigging station and can be connected to one of multiple material sources by a supply unit. The piggable supply line is a piggable primary supply line which can be connected to a discharge line of the supply unit by a valve unit. A piggable secondary supply line is provided which is connected to the valve unit and is connected to a secondary pigging station at the end remote from the valve unit. The valve unit is designed as a multi-way valve such that the discharge line of the supply unit can be at least selectively connected to the primary supply line (68.

Abstract: A changing device for coating media having a plurality of supply units each having at least one inlet connection, which can be connected to a reservoir for the medium, and an outlet connection, between which a flow channel extends. At least one coupling unit is present which has an input connection and an output connection, which can be connected to an application device, between which input connection and which output connection a through-channel (44) extends. The coupling unit is moveable relative to the supply units by a positioning device. The input connection can be coupled fluid-tight to the outlet connection of a supply unit. A valve device is present, in which each supply unit includes a valve unit which releases the flow channel in a released configuration and closes in a closed configuration and is controllable by a control signal in the released configuration.