| 摘要 |
<p>The fittings arrangement has a shut-off valve that is arranged in an inlet region of the shut-off valve and a backflow assembly is arranged to a common housing, where the housing has a connection piece that is hydraulically arranged behind the shut-off valve. A filter is used in the connection piece. A controller (18) is provided, which with signals of a pressure sensor are applied and opens the shut-off valve with a pressure drop.</p> |
