Author Topic: Attaching a corny keg gas post to a drilled stopper  (Read 905 times)

Offline narcout

  • Brewmaster
  • *****
  • Posts: 733
  • Los Angeles, CA
    • View Profile
Attaching a corny keg gas post to a drilled stopper
« on: August 19, 2014, 02:04:36 PM »
Can someone please take a look and let me know if I have the correct parts to attach a gas post to a drilled stopper?

First, the barbed end of this fitting is inserted into the drilled stopper:

http://www.midwestsupplies.com/1-4-mfl-to-1-4-barb.html

Then, this piece screws on:

http://www.northernbrewer.com/shop/adapter-for-corny-plugs-1-4-ffl-x-19-32-18.html

To which you can attach a type B keg post:

http://www.northernbrewer.com/shop/plug-assembly-gas-type-b-all-cornelius-ball-lock.html

Will that work?

Offline Slowbrew

  • Senior Brewmaster
  • ******
  • Posts: 1988
  • The Slowly Losing IT Brewery in Urbandale, IA
    • View Profile
Re: Attaching a corny keg gas post to a drilled stopper
« Reply #1 on: August 19, 2014, 02:08:38 PM »
If I'm understanding what your looking to do those pieces should work.  When you put the together you should be able to connect a gas side corny QD to one end and stuff the barbed connector into a drilled stopper.

Paul
Where the heck are we going?  And what's with this hand basket?

Offline Steve in TX

  • I spend way too much time on the AHA forum
  • ********
  • Posts: 2950
    • View Profile
Re: Attaching a corny keg gas post to a drilled stopper
« Reply #2 on: August 19, 2014, 02:24:30 PM »
You will want a nylon washer for the metal to metal flared fitting.


http://www.northernbrewer.com/shop/flared-nylon-washer.html

Offline kylekohlmorgen

  • Senior Brewmaster
  • ******
  • Posts: 1342
  • Saint Louis, MO
    • View Profile
    • The South House Pilot Brewery
Re: Attaching a corny keg gas post to a drilled stopper
« Reply #3 on: August 20, 2014, 07:41:02 AM »
What is the goal here? I've never seen something like this...
Twitter/Instagram: @southhousebrew

Recipes, Brett/Bacteria Experiments: http://SouthHouseBeer.com/

Offline narcout

  • Brewmaster
  • *****
  • Posts: 733
  • Los Angeles, CA
    • View Profile
Re: Attaching a corny keg gas post to a drilled stopper
« Reply #4 on: August 20, 2014, 10:36:17 AM »
What is the goal here? I've never seen something like this...

I probably won't do it, but I'm considering buying one of these:

http://www.ssbrewtech.com/products/brewbucket

Or maybe one of these:

http://www.ssbrewtech.com/products/the-brewmaster-bucket

I was thinking that if I could attach a corny gas post to the airlock stopper, I could pump in a few psi of CO2 prior to cold crashing to avoid air getting sucked into the fermentor (I've heard from other owners that the brewbuckets can hold about 4 psi before the lid seal begins to leak).

I was also thinking that I could do closed loop transfers to a purged serving keg by positioning the brewbucket above the keg, attaching a hose from the fermentor racking arm to the liquid out post on the receiving keg, and attaching a hose from the gas in post on the receiving keg to the airlock gas in post on the fermentor. 

I ferment in 10 gallon corny kegs now which is nice because I can cold crash and transfer under pressure without exposure to air.  The brewbuckets have a few advantages over fermenting in cornies, but I want to retain these abilities.

Offline beersk

  • Brewmaster General
  • *******
  • Posts: 2219
  • In the night!
    • View Profile
Re: Attaching a corny keg gas post to a drilled stopper
« Reply #5 on: August 20, 2014, 11:14:07 AM »
What is the goal here? I've never seen something like this...

I probably won't do it, but I'm considering buying one of these:

http://www.ssbrewtech.com/products/brewbucket

Or maybe one of these:

http://www.ssbrewtech.com/products/the-brewmaster-bucket

I was thinking that if I could attach a corny gas post to the airlock stopper, I could pump in a few psi of CO2 prior to cold crashing to avoid air getting sucked into the fermentor (I've heard from other owners that the brewbuckets can hold about 4 psi before the lid seal begins to leak).

I was also thinking that I could do closed loop transfers to a purged serving keg by positioning the brewbucket above the keg, attaching a hose from the fermentor racking arm to the liquid out post on the receiving keg, and attaching a hose from the gas in post on the receiving keg to the airlock gas in post on the fermentor. 

I ferment in 10 gallon corny kegs now which is nice because I can cold crash and transfer under pressure without exposure to air.  The brewbuckets have a few advantages over fermenting in cornies, but I want to retain these abilities.
I've been fermenting in cornies too and don't want to give up the luxury of transferring closed and under pressure. If you work this out, let us know, for sure! But I've been fermenting half of a 6 gallon batch in two 5 gallon cornies. Not ideal, but whatevs.
"What if, that thing I said?" - Philip J. Fry

Jesse

Offline narcout

  • Brewmaster
  • *****
  • Posts: 733
  • Los Angeles, CA
    • View Profile
Re: Attaching a corny keg gas post to a drilled stopper
« Reply #6 on: August 21, 2014, 09:52:19 AM »
I've been fermenting in cornies too and don't want to give up the luxury of transferring closed and under pressure. If you work this out, let us know, for sure! But I've been fermenting half of a 6 gallon batch in two 5 gallon cornies. Not ideal, but whatevs.

The gravity assisted closed loop transfer will definitely work.  I think the success of the cold crashing regimen depends on whether or not a few psi will push the stopper out.

I think I might actually go through with this; I'm just trying to decide if I want to get the version with the thermowell or not.

Offline troybinso

  • Brewer
  • ****
  • Posts: 329
    • View Profile
Re: Attaching a corny keg gas post to a drilled stopper
« Reply #7 on: August 21, 2014, 10:47:42 AM »
How about something like this stuffed into the stopper hole with gas pushing in?

http://www.micromatic.com/draft-keg-beer/fittings-pid-SSE-B2.html

Offline AmandaK

  • Senior Brewmaster
  • ******
  • Posts: 1349
  • Redbird Brewhouse
    • View Profile
Re: Attaching a corny keg gas post to a drilled stopper
« Reply #8 on: August 21, 2014, 02:22:18 PM »
I do closed transfers with a simple inline gas QD system. If I understand what you're doing, you likely don't need all of the parts you're going for but I guess I'm still a little unclear on what's happening.
Amanda Burkemper
Kansas City Bier Meister
BJCP Master

Redbird Brewhouse - Finishing Touches on the Basement Bar

Offline narcout

  • Brewmaster
  • *****
  • Posts: 733
  • Los Angeles, CA
    • View Profile
Re: Attaching a corny keg gas post to a drilled stopper
« Reply #9 on: August 21, 2014, 02:37:54 PM »
How about something like this stuffed into the stopper hole with gas pushing in?

http://www.micromatic.com/draft-keg-beer/fittings-pid-SSE-B2.html

Something like that would work fine for transfering, but for cold crashing I want the vessel (provided it is up to the task) to be able to hold a small amount of pressure once I remove the gas line - hence the gas post with sealing poppet valve.


Offline narcout

  • Brewmaster
  • *****
  • Posts: 733
  • Los Angeles, CA
    • View Profile
Re: Attaching a corny keg gas post to a drilled stopper
« Reply #10 on: August 30, 2014, 09:40:58 AM »
Well, those were definitely the right parts.  Unfortunately, the hole in the stopper is a bit too large for the hose barb.  I'll have to buy a solid stopper and drill it myself.




Offline metron-brewer

  • Assistant Brewer
  • ***
  • Posts: 101
  • White Bear Lake, MN
    • View Profile
Re: Attaching a corny keg gas post to a drilled stopper
« Reply #11 on: September 08, 2014, 10:11:45 AM »
Could you install the stopper from the inside to help prevent it from being pushed out?
Ron B.
White Bear Lake, MN

Offline Steve in TX

  • I spend way too much time on the AHA forum
  • ********
  • Posts: 2950
    • View Profile
Re: Attaching a corny keg gas post to a drilled stopper
« Reply #12 on: September 08, 2014, 10:12:49 AM »
Could you install the stopper from the inside to help prevent it from being pushed out?


That sounds crazy enough to work. Would mean removing the lid, but good idea!

Offline Slowbrew

  • Senior Brewmaster
  • ******
  • Posts: 1988
  • The Slowly Losing IT Brewery in Urbandale, IA
    • View Profile
Re: Attaching a corny keg gas post to a drilled stopper
« Reply #13 on: September 08, 2014, 01:05:26 PM »
I wonder if a threaded pipe, 2 washers, 2 o-rings and a burr on the side wouldn't work better (now that I can visualize the end goal)?  It would be permanent and no threat if it popping out.

Paul
Where the heck are we going?  And what's with this hand basket?

Offline narcout

  • Brewmaster
  • *****
  • Posts: 733
  • Los Angeles, CA
    • View Profile
Re: Attaching a corny keg gas post to a drilled stopper
« Reply #14 on: September 14, 2014, 12:02:27 PM »
On the off chance that anyone is actually interested, I'm happy to say that this worked really well.

I hit the fermentor with about 3 psi before cold crashing, and when I checked on it the next day, it was still holding pressure.

The closed loop transfer also went very smoothly.



This thing is so much easier to clean than a 10 gallon corny keg.  I might buy a second one.