Author Topic: Foamy Keg - Commercial, but want to resolve before corny keg  (Read 430 times)

Offline itzfry

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Hi All,

Super frustrated.  Had a kegerator for over 10 years.  Numerous homebrew and commercial kegs ran through it.  On the last 3 or so commercial kegs, I am having a foaming problem.  I want to resolve this before putting on a batch of homebrew IPA.   Any guidance would be great! 

Background:
- Replaced Regulator
- Moved from a 5 foot line to 10 foot line
- Using 3/16 line
- Replaced Coupler
- Same results with Picnic faucet versus tower faucet

Conditions
- 30 degrees inside
- 33 degree beer temp after pour

Results
- @ PSI 2-3 (yes, 2-3) the beer comes out mildly fast and foamy
- @ PSI 8-10 the beer comes out super fast and incredibly foamy
- Beer after foam, still tastes a bit flat.  Not sure if this is because we let it sit so long or if by pouring in a pitcher and then pouring into the glass (to manage foam) is making it taste like that. 

At this point, I am leaning to the regulator i bought is bad.  I replaced that for other reasons earlier on.  When the faucets didnt change the outcome, I changed the coupler.

Thoughts ??? HELP!

John


Offline a10t2

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Re: Foamy Keg - Commercial, but want to resolve before corny keg
« Reply #1 on: May 09, 2019, 09:55:40 PM »
It does sound like the regulator, especially if the timing lines up. Another option is that if your thermometer is even a couple degrees off you could be getting ice crystals in the lines.
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Offline itzfry

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Re: Foamy Keg - Commercial, but want to resolve before corny keg
« Reply #2 on: May 10, 2019, 12:25:38 PM »
Great, thanks...  I am going to move my lines closer to the door and replace the regulator. 

Any other thoughts from others I could consider would be helpful as well...

Thanks all

John

Offline MNWayne

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Re: Foamy Keg - Commercial, but want to resolve before corny keg
« Reply #3 on: May 10, 2019, 01:00:35 PM »
Give all lines, connections and tap a thorough cleaning. A restriction could be whipping the co2 out of solution.
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Offline itzfry

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Re: Foamy Keg - Commercial, but want to resolve before corny keg
« Reply #4 on: May 10, 2019, 09:33:11 PM »
Thanks MNWayne.  Worth noting, I clean lines / Faucet after each keg.  When I moved to a 10 foot line, I actually cut a new piece of bev line so its fresh and new.

Any other suggestions to consider from this great community?!

THANKS!

Offline TeeDubb

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Re: Foamy Keg - Commercial, but want to resolve before corny keg
« Reply #5 on: May 11, 2019, 08:41:24 PM »
Going back to your original posting: The thing that changed seems to be the 'last three commercial kegs.' Were they all the same brewery?  Perhaps they arrived / were packaged over-carbonated?  Easy check: after settling on a stable temperature over a few days, what was the measured keg pressure as rec'd? Check that vs. a carbonation chart for your kegerator temperature.

Besides the regulator, I would also check or replace the pressure gauge. Some are very cheap and fail over time. Let us know what you find!

Offline itzfry

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Re: Foamy Keg - Commercial, but want to resolve before corny keg
« Reply #6 on: May 12, 2019, 06:53:02 PM »
Thanks TeeDub.

Two questions:
- They were from different breweries but how do you measure keg pressure as received?  Is there an easy way to do that?

- If replacing entire regulator, I would be replacing the pressure guage or are you referring to something else?

THANKS! 

Note:  New regulator in mail...

Offline a10t2

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Re: Foamy Keg - Commercial, but want to resolve before corny keg
« Reply #7 on: May 12, 2019, 07:52:54 PM »
- If replacing entire regulator, I would be replacing the pressure guage or are you referring to something else?

You can definitely order a regulator body separate from the gauge, but odds are you're getting both.
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Offline TeeDubb

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Re: Foamy Keg - Commercial, but want to resolve before corny keg
« Reply #8 on: May 13, 2019, 03:14:38 AM »
- They were from different breweries but how do you measure keg pressure as received?  Is there an easy way to do that?

OK - the different breweries pretty much cancels out the probability of over carbonation being your issue. To measure as-received keg carbonation level (and pressure), I would let the keg temperature stabilize for a few days in your fridge. Then just connect your tap and regulator, but don't turn on the CO2 bottle. One of the 2 gauges on your regulator will show the keg pressure after you connect. Then check against a carbonation chart.

Wish I could help more - will think about it. Replacing the regulator and gauges is a good step.

Offline itzfry

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Re: Foamy Keg - Commercial, but want to resolve before corny keg
« Reply #9 on: May 15, 2019, 02:43:38 PM »
Thanks for the clarification.

I will plug up regulator and keep C02 tank off and see what the read is before I get started.

Question - can a long line (that is unneeded) make foam?  I wonder if I need to go back to the shorter line now that I got a new regulator to hook up?  Last pour did seem to sputter a bit which I assumed was because of the length.

Thoughts?

Offline denny

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Re: Foamy Keg - Commercial, but want to resolve before corny keg
« Reply #10 on: May 15, 2019, 02:57:36 PM »
Thanks for the clarification.

I will plug up regulator and keep C02 tank off and see what the read is before I get started.

Question - can a long line (that is unneeded) make foam?  I wonder if I need to go back to the shorter line now that I got a new regulator to hook up?  Last pour did seem to sputter a bit which I assumed was because of the length.

Thoughts?

In general, a longer line should reduce foam. 
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Offline itzfry

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Re: Foamy Keg - Commercial, but want to resolve before corny keg
« Reply #11 on: May 27, 2019, 01:16:43 AM »
Update:

- Changed out regulator, still foamy at first
- I kept the PSI at 10 and kept running beers
- After about 10-15 pours (not one after another, just on and off), beers started pouring perfect

I am going to try another keg but I think that my regulator (which was NEWLY ordered/installed) was bad off the jump.  I think it took some beers to level off the pressure it mistakenly put in.  We will test again next post.

Thanks for all the help on this topic - will update everyone!

John

Offline itzfry

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Re: Foamy Keg - Commercial, but want to resolve before corny keg
« Reply #12 on: July 04, 2019, 04:18:41 PM »
CONFIRMED - The regulator was bad.  This is a good example of not taking for granted how new your equipment is.  I tried so many other things before changing out the item that was the newest!  Thanks everyone for the ideas and support.  Hopefully this thread helps someone else!