Patent ID: 8622321

Claim:
Apparatus for preserving and serving from a bottle by-the-glass liquid that can be affected by oxygen, in particular wine, by pumping pressurized inert gas into said bottle, said bottle having a neck with an inlet mouth, said device comprising: a coupling portion adapted to couple with a pressurized gas supply, a central body, and a fastening portion to said bottle adapted to engage with said inlet mouth, said body having: a pressurized gas inlet duct, ending in said bottle, communicating with an inlet port present on said coupling portion, and a liquid delivery duct, which draws the liquid from the bottle and brings it to a delivery mouth, wherein to said inlet duct an inlet valve is associated, adapted to open said inlet duct when delivery of liquid is requested and to stop said inlet duct and to prevent the inert gas flow when delivery of liquid is not requested, and wherein to said delivery duct a delivery valve is associated, adapted to open said delivery duct when delivery of liquid is requested and to stop said delivery duct and to prevent the liquid to exit from the bottle when delivery of liquid is not requested, wherein at least one among said inlet valve and said delivery valve is a pilot valve that is piloted by the pressure of said inert gas, and wherein a pilot channel is provided communicating with a pilot port present in said coupling portion and communicating with said pilot valve.