The present invention relates to a removal device for removing gas bubbles and/or dirt particles from a liquid in a liquid conduit system or for removing a second liquid from a first liquid in the conduit system, the removal device comprising: - a main channel for a main flow, the main channel having an entry and an exit which are configured to be connected to the conduit system, - a housing which defines an inner space, wherein the housing is pivotably connected to the main channel via a single pivotable coupling, - at least one supply channel extending from the main channel to the inner space, - at least one return channel extending from the inner space back to the main channel, directly or indirectly via a return chamber, - at least one quiet zone in the inner space in which in use the liquid has a substantially smaller velocity than in the main channel, the quiet zone being configured to allow dirt particles or a relatively heavy liquid to settle at a lower end of the housing and/or gas bubbles or a relatively light liquid to rise to an upper end of the housing, wherein the quiet zone comprises energy dissipating devices which cause friction and a further decrease of the velocity. The removal device further comprises means to remove dirt particles or relatively heavy liquid, and/or gas or relatively light liquid out of the housing.