wine preservers

[Jason]

You need to involve one of the inert gases for best protection. There are systems made for home with the spigots and all that but I found that they leak gas and its gets pricey fast.
If I were making a system for home I would get a small tank of inert (nitrogen is easy) from any local commercial gas supplier (the same guys who supplies gas for restaurant soda systems or helium to a balloon shop.)You then need a regulator (gauges)to keep things in check and the same valve that balloon places use. This is male plastic flex valve that releases the gas right into bottle.That's it.
This system bypasses all spigot problems and I am told the gas sinks when sprayed in the bottle, so jamming the cork back in the bottle does not need to be hurried.Basically all this does is replace oxygen with nitrogen which protects the wine.
Total cost about $200 in my area and the gas lasts several months in a restaurant, so it would be even longer at home. The only thing to ever replace is the nitro.