The disclosure relates to a paint supply system for a coating installation (e.g. painting installation) comprising a ring line for circulation of a coating agent, a ring line tapping point in the ring line for extraction of the coating agent from the ring line, a consumer and a tap line leading from the ring line tapping point to the consumer. The disclosure provides a device for alternately moving the coating agent forward and backward in the tap line to avoid settling of the coating agent in the tap line.

A pig system for transporting liquid or pasty substances two pig stations which are connected to one another by way of a pig line. The pig system includes a number of pigs. Accordingly, the two pig stations have a number of parking positions, to which a controllable media connection is respectively assigned. Appropriate activation of the media connections allows the effect to be achieved that only some of the pigs at a time shuttle back and forth between the two pig stations. Defective pigs or operational pigs that are being kept on standby in this case remain in corresponding parking positions of the two pig stations.

Apparatus for spraying a fluid, including a pipe, a scraper capable of moving in the pipe, and a casing defining a storage volume for accommodating the scraper in a position for storing the scraper, the scraper being configured to push fluid in front of it which is present in the pipe when the scraper moves in the pipe, the storage volume being in fluid communication with the pipe and being configured to allow the scraper to move between the storage volume and the pipe. The scraper includes a first magnet, and the casing includes a second magnet capable of exerting a first force on the first magnet to move the scraper from the storage volume to the pipe.

A method of monitoring cleaning of an apparatus for applying a coating medium to an object, the apparatus including a rotatable deflecting element for atomizing the coating medium; and a cleaning medium line for conducting a cleaning medium to the deflecting element; where the method including commanding performance of a cleaning operation including delivery of the cleaning medium through the cleaning medium line towards the deflecting element while rotating the deflecting element; collecting operational values of at least one operational parameter of the apparatus for the cleaning operation; comparing the operational values with reference values of the at least one operational parameter for the cleaning operation; and determining whether the cleaning operation was successful or unsuccessful based on the comparison. A method of cleaning an apparatus for applying a coating medium to an object is also provided.

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.

An insulation device for a coating system for coating objects, the coating system having an electrostatically operating application apparatus having a dispensing device which dispenses a coating material, and at least one storage container which is connected to an input valve device via an inlet line and to the dispensing device via a supply line. The insulation device comprises a channel with a physical body which can move in the channel. The physical body has an electrically insulating material and can be moved by means of a fluid pressure between a park position and an insulation position and is designed such that, when it moves from the park position to the insulation position or from the insulation position to the park position, the physical body removes material from an inner casing surface of the channel, so that an electrical insulation path can be formed between the storage container and the input valve device.

A system for painting objects having a plurality of ring lines extending along a painting booth, each ring line conducting an operating medium required for operating an application device provided in the painting booth. The ring lines are divided into at least two regions. A connection device connects at least some of the ring lines to the application device and has a terminal module. The terminal module includes at least as many ring line sections as there are ring lines. The ring line sections have terminals at the ends to connect to the ring line regions. A branch line branches off from each of the ring line sections, the branch line leading to a terminal device. The terminal device has an inner flow path via which at least some of the branch lines can be connected to an outlet terminal. At least one tube or a line connects the outlet terminal to the application device.

A changing device for media, in particular for varnishes, having multiple connections, each of which can be connected to a reservoir for a medium. At least one docking unit is provided, having a coupling connection which is complementary to the connections and can be connected to a supply line for an applicator of a coating system. The docking unit can be moved relative to the connections by means of a positioning device. A delivery pressure device is provided, by means of which the delivery pressure, with which a medium is fed into the supply line, can be adjusted and/or supported, and/or by means of which the return pressure, with which a medium is returned from the supply line into the reservoir, can be adjusted and/or supported. A coating system with a changing device of this type is also provided.

A pig for a coating device wherein the coating device has a line system that can be pigged, wherein the pig has an RFID transponder, which is designed to store and/or to transmit and/or to receive data by means of the RFID technology. A coating system for coating an object with a coating material and to a method for controlling a coating system.

The invention relates to a changeover device for coating media having a plurality of supply units, each of which has at least one inlet, which can be connected to a reservoir, and an outlet, wherein a flow channel extends between the inlet and the outlet. At least one coupling unit which can be moved relative to the supply units has an entry and an exit which can be connected to an application device, wherein a through channel extends between the entry and the exit. The entry of the coupling unit is complementary to the outlets of the supply units so that the entrance of the coupling unit can be coupled to the outlet of one of the supply units and can be separated again therefrom. The coupling unit is designed as a pigging station. The invention further relates to a coating system for coating objects having such a changeover device.