Abstract: Disclosed is a ground-connection apparatus for coolant-conducting components in motor vehicles. The ground-connection apparatus includes a coolant-conducting component and an electrically conductive ground connector. The coolant-conducting component includes a housing which is not or only poorly electrically conductive and comprises a passage opening for receiving an electrically conductive rivet element. The electrically conductive ground connector can be connected at a first end to a ground and comprises at a second end an opening for the rivet element, in particular a blind rivet. The rivet element along its longitudinal axis comprises a cooling liquid contact portion, a fastening portion, and a ground connection portion. A first end of the rivet element forms the cooling liquid contact portion, which is arranged within the housing in such a way that it can contact a cooling liquid located in the housing in order to establish an electrical connection with a cooling liquid.

Abstract: According to the disclosure, a mounting system for a sealing apparatus of a ball valve apparatus is provided. It comprises a sealing apparatus, wherein the sealing apparatus comprises a housing device made of a hard component and a sealing means made of a soft component, a mounting apparatus having a mounting tappet extending in an axial direction, wherein the mounting tappet comprises a closure body stop face for abutting, in particular axially, against a closure body of a ball valve apparatus and a sealing stop face for abutting, in particular axially, against the sealing apparatus, such that the sealing apparatus can be arranged at a predefined distance from a closure body.

Abstract: The invention concerns a thermostat valve for a combustion engine, comprising a housing, which has several cooling fluid connections, and comprising at least one first hollow valve element, which has a spherical or spherical-segment shaped shell surface and is mounted rotatably in the housing, wherein the at least one first valve element comprises several openings limited by the shell surface, which openings can be selectively connected with one or several of the cooling fluid connections of the housing by rotation of the at least one first valve element, wherein at least one second valve element is provided which is rotatable in the housing relative to the at least one first valve element, wherein the at least one second valve element can selectively close or open one or several of the cooling fluid connections of the housing through rotation, and wherein a rotational drive is provided, with which the at least one first valve element and/or the at least one second valve element can be driven rotatably.

Abstract: The invention concerns a thermostat valve for a combustion engine, comprising a housing, which has several cooling fluid connections, and comprising at least one first hollow valve element, which has a spherical or spherical-segment shaped shell surface and is mounted rotatably in the housing, wherein the at least one first valve element comprises several openings limited by the shell surface, which openings can be selectively connected with one or several of the cooling fluid connections of the housing by rotation of the at least one first valve element, wherein at least one second valve element is provided which is rotatable in the housing relative to the at least one first valve element, wherein the at least one second valve element can selectively close or open one or several of the cooling fluid connections of the housing through rotation, and wherein a rotational drive is provided, with which the at least one first valve element and/or the at least one second valve element can be driven rotatably.