| 摘要 |
The invention concerns a valve assembly, an admission path (310) for a pouring nozzle, adjacent to the outlet of the valve, and spring thrusters (330, 340) for maintaining this nozzle in operating position on the admission path (310) for receiving another nozzle in ready position. The device also comprises a traverser with offset jack, provided with an arm (540) for driving the nozzles, while being supported by the cam track . The invention is characterised in that the jack body (501) is provided at the top with a sensor co-operating with this cam track, and also supports the driving arm (540), while the jack rod is fixed to the frame, thereby reducing the space requirement of the device.
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