Abstract: A test device for determining the particle load of pressurized hydrogen includes a housing (2), with an inlet (4) and an outlet (8) for the inflow or outflow of hydrogen, respectively. A sampling chamber (52) has a filter holder (44) for a test filter (58). A sample amount of hydrogen can flow through the test filter during a test procedure. After the test procedure has been completed, the test filter can be removed from the sampling chamber (52) for evaluating the deposition of particles. A venting device (64, 70) for reducing the pressure in the sampling chamber (52) is arranged inside the housing (2) and discharges any remaining hydrogen, at least partially, in the direction of the inlet (4) of the test device after the hydrogen has stopped flowing from the testing device.

Abstract: A valve device having a valve housing (4), in which a hollow valve part (6) is guided in a longitudinally movable manner, which valve part, controlled by an actuating device (8,14), in at least one open position opens the fluid path through the valve between a fluid inlet (E) and a fluid outlet (A) along a predeterminable flow path for a fluid and in a closed position, in which the valve part (6) is in contact with a valve closing part (10) from which it lifts off in the respective open position, blocks this fluid path, is characterized in that there is at least one flow guide device causing an at least partial reversal of direction in the flow path of the fluid emerging from the valve part (6) as soon as the latter assumes an open position.

Abstract: 1. An adapter device for regulating a control current and method of operating a corresponding adapter device 2. An adapter device is provided for regulating a control current (is) of a magnetic force actuator (32) of a valve (6), having a housing (8), into which the hardware (H) and the software (S) for regulating the control current (is) of the magnetic force actuator (32) of the valve (6) are integrated, and which has a connection device (14) for detachably connecting to the valve (6) and a further connection device (18) for detachably connecting to a connector part (4), which can be used to supply the adapter device with current at least externally.

Abstract: 1. Test device for determining the particle load of high-pressure hydrogen. 2. A test device for determining the particle load of pressurized hydrogen, comprising a housing (2), which has an inlet (4) and an outlet (8) for the inflow or outflow of hydrogen, respectively, and a sampling chamber (52), in which a filter holder (44) for a test filter (58) is provided, through which a sample amount of hydrogen can flow during a test procedure and which, after the test procedure has been completed, can be removed from the sampling chamber (52) for evaluating of the deposition of particles, and having a venting device (64, 70) for reducing the pressure in the sampling chamber (52), is characterized in that the venting device (64, 70) is arranged inside the housing (2) and discharges any remaining hydrogen, at least partially, in the direction of the inlet (4) of the test device after the hydrogen has stopped flowing from the testing device.