Abstract: The disclosure relates to a tap head for connecting to a keg for a bar system, the tap head having a tap head body, and a pressurization-gas supply line and a beverage removal line being formed in the tap head body, such that a 3/2-way valve is formed directly on or in the tap head body in the pressurization-gas supply line, which 3/2-way valve connects either the pressurization-gas supply line from a gas source to the interior of the keg or connects, in a gas-conducting manner, the interior of the keg to the environment.

Abstract: A keg/cask seal for a keg or cask containing a beverage is disclosed. A color mark is arranged in a geometrically defined shape on a top side of the keg/cask seal. The geometrically defined color mark allows a conclusion to be drawn about the time lapsed since the keg/cask seal was installed.

Abstract: A fitting arrangement for a cask is disclosed having a fitting sleeve with a riser pipe arranged therein, and resiliently moveable relative thereto. The fitting sleeve has a conically extending inner sealing surface tapering toward an upper end, and a seal is incorporated between the inner sealing surface and the upper end of the riser conduit. The riser pipe is pressed with the seal against the sealing surface with a spring force, and the seal is arranged internally in the upper end of the riser pipe, wherein a sealing body is arranged in the upper end of the riser pipe and is resiliently moveable relative thereto, which sealing body comes to bear with form-fit engagement on an internal sealing surface of the seal as a result of the spring force.