"Definitely don't apply any sort of vacuum to plastic carboys! Even
glass might be dicey but plastic will just collapse and there goes
your wine... running on the floor..."

Hey, you don't go crazy with pumping! You pump only so much that the
wine level goes up close to the bung and then you stop pumping. After
a while, the wine level will go down as CO2 has been released and has
taken the place of the wine. You then stir the wine and use the pump
again or pump and shake the carboy.

I have been using a vaccum pump for many years on a few hundred kits.
In fact, I have many carboys with vaccum rather than airspace and
airlock. Every other day I pump more CO2 out and then lock the
vaccum. I don't care about a change in temperature or pressure, my
wine is not affected as I keep 2 in. of vaccum/CO2 below the bung.

Try it and you will like it as they say.

Guy

On Apr 11, 2:33 pm, "guy" > wrote:
> "Definitely don't apply any sort of vacuum to plastic carboys! Even
> glass might be dicey but plastic will just collapse and there goes
> your wine... running on the floor..."
>
> Hey, you don't go crazy with pumping! You pump only so much that the
> wine level goes up close to the bung and then you stop pumping. After
> a while, the wine level will go down as CO2 has been released and has
> taken the place of the wine. You then stir the wine and use the pump
> again or pump and shake the carboy.
>
> I have been using a vaccum pump for many years on a few hundred kits.
> In fact, I have many carboys with vaccum rather than airspace and
> airlock. Every other day I pump more CO2 out and then lock the
> vaccum. I don't care about a change in temperature or pressure, my
> wine is not affected as I keep 2 in. of vaccum/CO2 below the bung.
>
> Try it and you will like it as they say.
>
> Guy

Guy:

I was really talking about plastic carboys because those were
mentioned in the original posting about vacuum but granted, lot of
this depends on the setup, especially what kind of vacuum pump one
uses. I'm curious about your setup, especially that part about locking
the vacuum - how do you do that?

Thx,

Pp

I'm curious about your setup, especially that part about locking
> the vacuum - how do you do that?
>
> Thx,
>
> Pp- Hide quoted text -
>
> - Show quoted text -


I use a Mity Vac vaccum pump, but I do not connect it directly to the
rubber bung. Here is how to do it so that the carboy retains the
vaccum once the pump is disconnected.

1. Cut a piece of a flexible plastic hose about 6 in. in length.
2. Thread that short piece of plastic hose halfway through a white
plastic clip (the one used to shut the flow of wine.
3. Insert one end of the short flexible hose into the hole of the
rubber bung fitted to the carboy.
4. When you want to use the vacuum pump, insert the vacuum pump hose
black tip into the other end of the flexible hose.
5. Pump to extract air from the carboy.
6. clip shut the flexible hose so that the vaccum is kept.
7. Remove the pump/pump hose and black tip from the short flexible
hose.
8. You can then go to the next carboys!

As far as removing aroma when degasing with a pump, you probably loose
some in a shorter time compared to a longer time using TIME to degas.
But how sure are you that it's not the same amount?

Guy
Guy