Abstract: Adaptor device comprising a base body with a first reception for receiving the first hose coupling nozzle and with a second reception for receiving a second hose coupling nozzle. The adaptor device has a first connecting nipple and a second connecting nipple for receiving hoses and has at least one first fastening structure for connecting the adaptor device to a further device. The adaptor device is configured to be connected to the further device to receive in the first and second receptions, respectively, upon connection with the further device, first and second hose coupling nozzles of the further device. A distance between the first and second receptions is smaller than a distance between muzzle openings of the first and second connecting nipples.