| 摘要 |
<p>A metering unit comprising a body (14) including a central cavity (18) with gate valve operating and gate valve cleaning spaces (19, 20), where an actuating mechanism is arranged for moving a cylindrical gate valve (16) in axial translation from the space (19) to the space (20) and vice versa, where the space (19) has a diameter equal to that of the gate valve, and the space (20) has a diameter greater than that of the gate valve, is new. An independent claim is also included for operating a dosing unit.</p> |
