| 摘要 |
Device (100) for preserving and serving, from a bottle, by-the-glass liquid that can be affected by oxygen such as wine, by pumping pressurized inert gas in a bottle (40' ). The device comprises a coupling portion (10) adapted to couple with a pressurized gas supply, a central body (20), and a fastening portion (30) to the bottle (40'), in particular, to a bottle neck (40). The central body (20) provides an inlet duct (21) of the pressurized gas, associated with an inlet valve (24), and a delivery duct (22) of the liquid, associated with a delivery valve (25), which draws the liquid from the bottle (40') and brings it to a delivery mouth (23). In particular at least one among the inlet valve (24) and the delivery valve (25) is a pilot valve, which is piloted by the pressure of the inert gas. Furthermore, a pilot channel (26), (29) is provided communicating with a pilot port (27), (28) present in the coupling portion (10) and communicating with the pilot valve.
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