Originally Posted by HarkinBanks
That is awesome. I was about to lay out some serious coin on a foodsaver when all I wanted to do was seal mason jars for hops. This will be perfect, thanks!
Yup, it's a bit pain-in-the-assy to have to pump them down by hand, (takes about 30 seconds for a 1 qt mason jar half filled with hops). I happen to have one of these:
Which is a battery powered vacuum pump for ziploc baggies. The baggies are a piece of crap, (lose vacuum quickly through the POS seals), but the vacuum pump works well. I use that to pump the mason jars down to around -15 inches mercury, then the brake bleeder shown in the Alvin link to get down to about -25 inches mercury. Takes maybe 10 seconds of hand pumping then.
The 30 seconds of hand pumping, (without the battery powered gizmo), per mason jar is still a snap though, (since I rarely use more than one or two hop varieties per batch), and it is quick and cheap, plus one less electric appliance to take up space.