| 摘要 |
<p>The collecting pipe (3) attached to the supply pipe (1) in the vicinity of a flow opening (3) includes a flow orifice (4) arranged vertically beneath the flow opening (2). Said collecting pipe is associated with a removable sealing member (5) secured to the lower end of a support element (6) and a control member (15) applying said sealing member (5) against said flow orifice (4) by pivoting the support member (6).</p> |
