Opening an already pressurized corny? - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > Bottling/Kegging > Opening an already pressurized corny?

Thread Tools
Old 09-06-2006, 12:44 PM   #1
Aug 2006
Central Florida
Posts: 7

I know this may be a stupid question but I've got a corny that I naturally carbed at room temp. I'm wanting to add a hop sock to the keg now as I noticed in my test bottles that it wasn't quite up to snuff. Is there any problem with relieving the pressure and opening up the keg to put this in? Then it's going directly into my fridge and onto CO2.

Will I notice any ill effects? Other than it foaming like mad when I relieve all that pressure?

Thanks in advance.
Bender: (singing) Hush, little brewski,
Don't you leak,
Daddy wants to drink for at least a week.

Primary 1: Empty!

Secondary 1: Hoppin' Mad Amber
Secondary 2: EMPTY!

Carbonating 1:
Carbonating 2:

Tap 1: Dirty Rats' House Amber V2.0
Tap 2: Irish Red Black Cherry Ale
Tap 3: Nut Brown Ale
Tap 4: Cheesefoods' Vanilla Caramel Cream Ale
Tap 6: Vanilla Cream Soda

On Deck: Not sure yet?

Reply With Quote
Old 09-06-2006, 01:30 PM   #2
God Emporer BillyBrew
God Emporer BillyBrew's Avatar
Sep 2005
Posts: 1,509
Liked 16 Times on 11 Posts

I don't think so. You might lose a little carbonation, but you can get it back when you put the tank on it. You'll probably have to let some pressure out in order to get the lid off.
Desert Planet Brewing Co.

Primary :Bloody Nose Porter
Primary 2: Bloody Nose Porter
Secondary: Blackberry Melomel
Secondary 2:air
Bottled : 14 Pound Hammer Cider, Punkin Ale, know ale, Domino wheat
Keg 1: **** Inside Her
Keg 2: IPA
Keg 3: one on a weeknight, two on a weekend IIPA
Future : Ginger Cream Ale,

Reply With Quote
Old 09-06-2006, 01:35 PM   #3
Glibbidy's Avatar
Oct 2005
Sunny Southern Vermont
Posts: 2,369
Liked 15 Times on 14 Posts

Relieve the pressure in the keg by opening the pressure relief valve, remove the bail, and toss in your hop sack. Now onto the serious stuff.

It is important to purge the headspace with CO2 before pressurizing the keg. Open the pressure-relief valve by pulling on the valve ring and turning the ring 90deg to lock the valve open.

To purge the keg, set the tank regulator to about 30 psi and connect the gas to the IN side of the keg. Let the gas flow into the keg for about 30 seconds or so, then close the relief valve. If your keg doesn't have a relief valve in the lid, an alternative purging technique is to leave the lid unsealed to allow the keg to vent. You will need to reduce the purge pressure to about 5 psi to reduce splashing. Once the headspace has been purged (it should only take a minute or two), seal the lid. You're now ready to carbonate.

This will prevent the potential for oxidation.

Reply With Quote
Old 09-06-2006, 07:23 PM   #4
Aug 2006
Posts: 349
Liked 1 Times on 1 Posts

You have to release the pressure. As stated.....after you add the hops and close the keg...release the pressure a few times after you hook up your CO2 tank to purge air from the keg.

A little hint about adding hops to a keg. The hops can clog the pickup tube. I welded a hook onto my keg lids and tie the hopsack to the lid with a precut length of string. This keeps the hopsack off the bottom an inch or more so that it does not get sucked into the pickup tube.

if you have no access to a welder, you may be able to set up your kegs by some other means. The keg may seal if you use very fine thread and just clamp it by closing the lid on it.

Reply With Quote
Old 09-07-2006, 12:19 AM   #5
Nov 2005
I'm gone!
Posts: 666
Liked 5 Times on 5 Posts

Even simpler, put something that floats well and is easy to sanitise inside the hop sack to keep it from sinking and clogging the pickup tube. A ping pong ball would work.

Reply With Quote
Old 09-11-2006, 05:24 PM   #6
Aug 2006
Posts: 349
Liked 1 Times on 1 Posts

That would work, but I myself opted to keep the hops closer to the bottom because I did not want all the hops flavor to be on top because of the floating hop sack.

Reply With Quote
Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Closed-system pressurized fermentation technique! WortMonger General Techniques 2249 12-26-2016 06:32 AM
Cleaned/pressurized corny's on sale for $19 each if you buy a 4 pack. BrewBeemer Equipment/Sanitation 13 11-28-2008 09:20 AM
Pressurized Carboy transfers Boerderij_Kabouter General Techniques 1 09-18-2008 07:06 PM
Cold conditioning- pressurized or not? newell456 Bottling/Kegging 7 07-22-2008 02:49 PM

Forum Jump