New degassing ?

[Wade E]

Degassing question. I have a mighty vac that I just bought and have
been using it on a 6 gallon batch of Cherry. At first it would pull a
lot of litte bubbles(S02) out of my wine between 18 -25hg's. Ive been
using it for 3 days now and still get bubbles but they are a lot bigger
bubbles now and only between 22-25hg's. It is new and wont hold a
steady pressure over night. Does this mean that there is stiil to much
gas in there or is it almost impossible to hols a steady pressure?

 

[masta]

I would say that it is nearly impossible to make a complete airtight seal between the mighty vac and the carboy. Even a very small leak will cause you to lose vacuum overnight due to the relatively small volume of head space in the carboy.

 

[Wade E]

Thanks boss!

 

[Wade E]

Will the vac still produce bubbles when the wine is dgassed. The
bubbles are much different looking now as they werte when I started!

 

[Dean]

Yes, the vac will still produce bubbles, but only the really large ones, and even those will be infrequent. I use a combo of both stirring and vac degassing. I vac it over a few days, Drill stir for a 10 minute period of small bursts, then vac degas one more time. Depending on what cap you are using, will determine how air-tight you can get it. I use a large hose clamp around my orange cape to make sure it on really tight. I think I posted pics on here either last year or the year before just on how I do it.

 

[docbee]

I thought the loss of vacuum was due to the CO2 coming out of solution and becoming a gas and thus filling up the headspace with gas and thus decreasing the negative pressure. When the bubbling slows down the pressure seems to last longer when I do the vac degassing.