The invention relates to an apparatus for thermal spraying (1) including a spray gun (2) with a burner (3), wherein an operating media (5) can be supplied to the spray gun (2) via a feed line (4), and a base part (6) which is in communication with a supply unit (8) for the operating medium (5) via a supply line (7). A releasable coupling device (9) is provided, with the feed line (4) including an adapter part (10) such that the adapter part (10) can be connected to the base part (6) by means of the releasable coupling device (9).