Abstract: A heatable media line includes a connecting part, which establishes an electrical connection, and serves to introduce a heat conductor into a media line section. A connection of the heat conductor with contact-forming parts is set up in an end part, and the heat conductor is tightly accommodated in boreholes of a coupling part by means of two sealing bodies spaced apart from each other, as well as introduced into the media line section by way of a supporting body for purposes of heating a medium flowing in the latter. In order to produce a reliable seal intended to prevent the medium from penetrating into the end part, recesses in the walls of the coupling part and an interruption of a creepage distance are configured between the sealing bodies such that the heat conductor is directly in contact with the surrounding atmosphere.

Abstract: A heatable media line is characterized by a connecting part (4), which establishes an electrical connection, and serves to introduce a heat conductor (14) into a media line section (5). A connection of the heat conductor (14) with contact-forming parts is set up in an end part (10), and the heat conductor (14) is tightly accommodated in boreholes (11, 12) of a coupling part (9) by means of two sealing bodies (15, 16) spaced apart from each other, as well as introduced into the media line section (5) by way of a supporting body (19) for purposes of heating a medium flowing in the latter.

Abstract: A ventilation arrangement for the head space of the fuel tank of a vehicle comprises a switchable main valve intended for adjusting an arbitrary pressure in the head space of the tank. By way of the opening position of the main valve, a connection between a connection (5) intended for connection to the head space and a connection (6) intended for connection to the surrounding atmosphere is established, wherein the main valve is assigned a pilot valve, which opens during a first path element of a switching movement, wherein the main valve only opens following this first path element. Because of the small cross section of the pilot valve and the pressure relief that materialized through its opening, the switching power can be reduced and a smaller size drive can be employed.

Abstract: A ventilation arrangement for the head space of the fuel tank of a vehicle consists of a valve assembly received in a housing (30), which assembly is arranged to produce a maximum pressure, which is not to be exceeded, a minimum pressure below which the pressure must not fall, and a random pressure, for example, for the tank filling process, within the head space. For this purpose a valve which is biased by a spring (25) in the direction towards an atmospheric connector (6) and is characterised by a sealing plate (17), and a valve biased by a spring (19) in the direction towards a connector (5) intended for connection to the head space, and a valve characterised by a sealing head (24) are provided, the latter of which is simultaneously connected to an electromagnetic drive in order to produce the random pressure.

Abstract: A ventilation arrangement for the head space of the fuel tank of a vehicle comprises a switchable main valve intended for adjusting an arbitrary pressure in the head space of the tank. By way of the opening position of the main valve, a connection between a connection (5) intended for connection to the head space and a connection (6) intended for connection to the surrounding atmosphere is established, wherein the main valve is assigned a pilot valve, which opens during a first path element of a switching movement, wherein the main valve only opens following this first path element. Because of the small cross section of the pilot valve and the pressure relief that materialized through its opening, the switching power can be reduced and a smaller size drive can be employed.

Abstract: A filler tube for a tank made of plastic for preventing an incorrect filling of the tank is provided with a permanent magnet, which is accommodated in a liquid-tight manner, and with a plastic holder for holding the permanent magnet. The filler tube of the aforementioned type for a tank made of plastic, which can be manufactured more easily, has fewer components and which can be mounted more easily. To this end, the filler tube is made of plastic and the plastic holder, which holds the permanent magnet, is directly connected in a liquid-tight manner to the filler tube.