Back to basics - filling a 3-piece airlock - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Back to basics - filling a 3-piece airlock

Reply
 
Thread Tools
Old 11-19-2011, 03:13 PM   #1
Misplaced_Canuck
HBT_LIFETIMESUPPORTER.png
 
Misplaced_Canuck's Avatar
Recipes 
 
Jan 2011
NE Columbia SC - Formerly, Montreal Canada
Posts: 2,887
Liked 166 Times on 134 Posts



There's a lot of yap-yap on this forum about filling a 3piece airlock with miscellaneous *safe* liquids in case of a suck-back.

This post is to show how one can fill a 3-piece airlock that will only allow air (and not liquid!) to be sucked-back in the event that there's a pressure differential.

3-piece airlock:



Soak in a a bowl of sanitizer at least 4" deep:



Assemble the 3 piece while still covered in the sanitizing solution:



Up-right the now-assembled airlock, and pull it out of the sanitizing solution. The negative pressure will suck liquid out of the airlock, until it starts sucking air. At this point, it's not possible anymore for liquid to be sucked back.

It's a bit hard to take a picture of (because it happens under 2 seconds), but in this pic the water is draining from the bottom of the airlock:





And the result is a perfectly filled airlock with no possibility of liquid suck back:



Give a small shake to the airlock to release any liquid trapped in the stem.

Voila.

M_C
__________________
Quote:
Originally Posted by Misplaced_Canuck
Carbonic bite? Is that like the bubonic plague?
Quote:
Originally Posted by ebstauffer
Needless to say after more than a few drams my mental efficiency matched my mashing efficiency.

davekippen Likes This 
Reply With Quote
Old 11-19-2011, 03:23 PM   #2
SwampassJ
 
SwampassJ's Avatar
Recipes 
 
Mar 2010
Coral Springs, FL
Posts: 2,163
Liked 39 Times on 35 Posts


I keep looking at the last picture for the water level but all I can see is a bottle of Pliny.
__________________
BLAH BLAH BLAH

davekippen Likes This 
Reply With Quote
Old 11-19-2011, 03:28 PM   #3
KayaBrew
Recipes 
 
Nov 2008
Jay, Adirondack Mountains, NY
Posts: 2,401
Liked 211 Times on 164 Posts


If you can't figure out an airlock, maybe you shouldn't be playing with the stove/burner and hot liquids!
__________________
"...Careful, man...there's a beverage here!..."

 
Reply With Quote
Old 11-19-2011, 04:34 PM   #4
Misplaced_Canuck
HBT_LIFETIMESUPPORTER.png
 
Misplaced_Canuck's Avatar
Recipes 
 
Jan 2011
NE Columbia SC - Formerly, Montreal Canada
Posts: 2,887
Liked 166 Times on 134 Posts


Quote:
Originally Posted by SwampassJ View Post
I keep looking at the last picture for the water level but all I can see is a bottle of Pliny.
It figures that the first reply would be about the bottle of Pliny in the background. Hard to get stuff in South Carolina!!!

M_C
__________________
Quote:
Originally Posted by Misplaced_Canuck
Carbonic bite? Is that like the bubonic plague?
Quote:
Originally Posted by ebstauffer
Needless to say after more than a few drams my mental efficiency matched my mashing efficiency.

 
Reply With Quote
Old 11-19-2011, 04:48 PM   #5
SwampassJ
 
SwampassJ's Avatar
Recipes 
 
Mar 2010
Coral Springs, FL
Posts: 2,163
Liked 39 Times on 35 Posts


Quote:
Originally Posted by Misplaced_Canuck View Post
It figures that the first reply would be about the bottle of Pliny in the background. Hard to get stuff in South Carolina!!!

M_C
Every now and then someone brings in a few bottles to the brew store and they share and sample but never when I can make it.

__________________
BLAH BLAH BLAH

 
Reply With Quote
Old 11-19-2011, 05:11 PM   #6
JustLooking
Recipes 
 
Dec 2009
Posts: 639
Liked 125 Times on 90 Posts


.

Reason: my bad

 
Reply With Quote
Old 11-19-2011, 06:07 PM   #7
ayoungrad
Recipes 
 
Sep 2010
Tampa, FL
Posts: 1,102
Liked 12 Times on 12 Posts


Try what I said about the carboy on the alcohol/airlock post using your method to fill the airlock (which is no different from any other method - the end result is exactly the same).

If you get no suck-back, then I stand corrected.

But I will ask again, do you cold crash?

 
Reply With Quote
Old 11-19-2011, 06:34 PM   #8
Misplaced_Canuck
HBT_LIFETIMESUPPORTER.png
 
Misplaced_Canuck's Avatar
Recipes 
 
Jan 2011
NE Columbia SC - Formerly, Montreal Canada
Posts: 2,887
Liked 166 Times on 134 Posts


Quote:
Originally Posted by ayoungrad View Post
Try what I said about the carboy on the alcohol/airlock post using your method to fill the airlock (which is no different from any other method - the end result is exactly the same).

If you get no suck-back, then I stand corrected.

But I will ask again, do you cold crash?
I cold crash all the time. No suck-back with the method posted above, as all the water that CAN be sucked back has already been sucked back. Only air can make it past the airlock (both in and out).

M_C
__________________
Quote:
Originally Posted by Misplaced_Canuck
Carbonic bite? Is that like the bubonic plague?
Quote:
Originally Posted by ebstauffer
Needless to say after more than a few drams my mental efficiency matched my mashing efficiency.

 
Reply With Quote
Old 11-19-2011, 09:10 PM   #9
ayoungrad
Recipes 
 
Sep 2010
Tampa, FL
Posts: 1,102
Liked 12 Times on 12 Posts


Someone on the other thread says that filling to the max line is overfilled and that will cause suck-back. Now, I can definitely buy that as an explanation for why some people get it and others don't. Your technique must result in a fill that is less than to the full line. This can also be easily accomplished by pouring a little less than usual directly into the outside of the airlock. I'll have to give it a whirl. Good to know.

 
Reply With Quote
Old 11-20-2011, 01:49 PM   #10
dzlater
Recipes 
 
Apr 2008
New Jersey
Posts: 1,095
Liked 37 Times on 33 Posts


I didn't think suck back was possible with a 3 piece airlock?
The airlock liquid level is below the top of the gas vent tube how can it get sucked into the fermenter?

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Three Piece Airlock busta98 Beginners Beer Brewing Forum 13 03-04-2010 11:03 PM
3 piece airlock or blow off tube richbrostrom Beginners Beer Brewing Forum 7 03-28-2009 06:07 AM
3 piece airlock dsmith1279 Beginners Beer Brewing Forum 8 02-06-2009 07:44 PM
3 Piece Airlock problem Ernie3 Beginners Beer Brewing Forum 9 01-14-2009 09:05 PM
Back to basics. Orfy Beginners Beer Brewing Forum 16 12-29-2006 08:00 PM


Forum Jump