| 摘要 |
A flushing unit has an extraction borehole for process gases and a flushing gas line, which can be connected via a flushing gas connection to a flushing gas supply. In order for only one fitting to be flushed by a circulation flushing operation with an inert gas or a flushing gas, the flushing unit has a flushing gas outlet which is connected to the extraction borehole, and which is opened or closed with a stop valve.
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