Dry Airlock Question - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > Dry Airlock Question

Reply
 
Thread Tools
Old 08-09-2012, 06:30 PM   #1
mpcluever
Recipes 
 
Jun 2010
here
Posts: 636
Liked 39 Times on 34 Posts



I got a 200L variable capacity fermenter and it comes with a dry airlock.

http://www.midwestsupplies.com/plast...acity-lid.html

It uses marbles to allow air to blow by and then fall back in place, sealing the hole. I get that part. Why does it have TWO marbles such that it allows air to go INTO the fermenter? There's one up top that allows air to go up and around the sides of the airlock into the fermenter. What am I missing here?

 
Reply With Quote
Old 08-09-2012, 06:45 PM   #2
malkore
 
malkore's Avatar
Recipes 
 
Jun 2007
Nebraska
Posts: 6,922
Liked 37 Times on 35 Posts


To avoid a potential vacuum from forming. I toured a very small distillery once and their mash tun had a faulty valve which didn't allow air inside as it cooled. The result was a 15BBL mash tun implosion. Luckily the manufacturing defect was under warranty so they got a brand new mash tun.
__________________
Malkore
Primary: English Mild
On tap: Pale Ale, Lancelot's Wheat, English Brown Ale, Steam Beer, HoovNuts IPA
Bottled: MOAM, Braggot, Raspberry Melomel, Merlot, Apfelwein, Pyment, Sweet mead, Cabernet
Gal in 2009: 27, Gal in 2010: 34, Gal in 2011: 13, Gal in 2012: 10

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Corny Fermenter Airlock question. BuonAnno Equipment/Sanitation 2 04-23-2010 05:35 PM
Airlock question bloodorange Equipment/Sanitation 2 07-06-2007 09:37 PM
Airlock Cleaning Question Deacon Equipment/Sanitation 2 06-14-2007 01:51 PM
Bought my first BB today; airlock question Willsellout Equipment/Sanitation 18 04-04-2007 05:40 PM
Help! Airlock Question.... wheela426 Equipment/Sanitation 8 11-09-2006 10:28 PM


Forum Jump