Abstract: The invention relates to a fuel injector, in particular a common-rail injector (1), comprising an injector housing (2), in which a nozzle needle (8), which is arranged in such a way that the nozzle needle can be moved in a reciprocating manner, is arranged in a high-pressure chamber (6) in order to open and close at least one injection opening (5), which nozzle needle bounds a control chamber (20) by means of one end face and interacts with a nozzle body seat (10) by means of the other end face in order to open and close the injection opening (5). The nozzle needle (8) has a first sleeve-shaped supporting element (14), to which force is applied in the closing direction of the nozzle needle (8). In addition, the nozzle needle (8) has a second sleeve-shaped supporting element, which surrounds the nozzle needle (8) and which is arranged in the direction of the end face of the nozzle needle (8) that is close to the control chamber.

Abstract: The invention relates to a fuel injector, in particular a common-rail injector (1), comprising an injector housing (2), in which a nozzle needle (8), which is arranged in such a way that the nozzle needle can be moved in a reciprocating manner, is arranged in a high-pressure chamber (6) in order to open and close at least one injection opening (5), which nozzle needle bounds a control chamber (20) by means of one end face and interacts with a nozzle body seat (10) by means of the other end face in order to open and close the injection opening (5). The nozzle needle (8) has a first sleeve-shaped supporting element (14), to which force is applied in the closing direction of the nozzle needle (8). In addition, the nozzle needle (8) has a second sleeve-shaped supporting element, which surrounds the nozzle needle (8) and which is arranged in the direction of the end face of the nozzle needle (8) that is close to the control chamber.

Abstract: A gas valve 1, in particular a dosing valve for a gaseous medium, having a valve seat body 3, which is arranged on a valve housing 2, and a closing body 7, which can perform a stroke motion relative to the valve seat body 3 and to an opening stroke stop 17 interacting with the valve housing 2. According to the invention, a gas valve 1 is provided which is improved as regards its durability. This is achieved by virtue of the fact that the gas valve 1 has an impact body which reduces the impact speed and/or impact energy of the closing body 7 on the valve seat body 3 and/or on the opening stroke stop 17.

Abstract: A gas valve 1, in particular a dosing valve for a gaseous medium, having a valve seat body 3, which is arranged on a valve housing 2, and a closing body 7, which can perform a stroke motion relative to the valve seat body 3 and to an opening stroke stop 17 interacting with the valve housing 2. According to the invention, a gas valve 1 is provided which is improved as regards its durability. This is achieved by virtue of the fact that the gas valve 1 has an impact body which reduces the impact speed and/or impact energy of the closing body 7 on the valve seat body 3 and/or on the opening stroke stop 17.