av Rennstam » lördag 2017-03-18 09:42
Jag har haft lite interaktion med Blichmann för att höra vad de tror om de här. Och kortfattat så tror de att det är CO2 och inte luft i slangen. Däremot kunde de inte förklara varför mina beergun-öl blev mer oxiderade än dem jag flaskat med picnic-kranen. Förmodligen har jag gjort något fel ... har gjort nytt experiment och tappat upp en pilsner med BG. Väntar på resultat. Dialog med Blichmann finns nedan för den som är intresserad:
Hi Blichmann,
I have a beergun and am worried about bubbles in the hose when I am filling up bottles. If it’s air, that’s not good. I’m afraid the bottled beer gets oxidized. Or is it just co2 from the beer? I just want to know if I’m doing something wrong, or if the bubbles are normal. It it’s co2 I guess it’s not a problem.
See attachment for a picture of the bubbles. The picture was taken after I had filled three bottles. The whole hose is not filled with bubbles like this, but they collect in a couple of clusters (4-5) in the hose.
All the best,
Jens, Sweden
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Hi Jens,
You will get some bobbles in the line but that looks like a lot of them and the bubbles look bigger than normal. The bobbles will collect even more when the beer is not flowing through the line.
Make sure the clamp is clamped good to your fitting on the ball lock.
Are you bottling beer? It looks almost clear.
What was the pressure level on the keg before you started (what pressure was it carbonated at)?
Are you getting a lot of foam in the bottle?
Do you have the full 10 foot of hose hooked to the keg?
Sincerely,
Doug Granlund
Customer Service
Blichmann Engineering
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Hi Doug,
Many thanks for the reply. I appreciate that you take time to consider this:). Please see my answers below:
Yes, there were more bubbles when the beer was not flowing (as in the picture). When I was filling the number of bubbles seemed to decrease.
The clamps were very snugly fit.
Yes, it’s beer. A pilsner with only pilsner malt. But it’s not as bright as it looks in the picture.
The keg was pressured at 1 bar. I relieved the pressure before filling, and then put the filling pressure to less than 0,2 bar.
No, not a lot of foam in the bottle. Except for the bubbles, which are confusing me, the filling process worked just fine.
Yes, I have a full length hose.
I am asking primarily because I had oxidation problems when filling bottles with my beergun. Here is a picture of beers about 7 weeks after bottling. They beers are from the same keg. The left one was bottled with a picnic-tap and has the original color of the beer, while the two right ones, which where filled with my beergun, have darkened significantly, most likely because of oxidization.
All the best,
Jens
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Hi Jens,
I think you are doing fine with the bottling. I thin the bubbles are just CO2 coming out of the beer. I get this too when I am filling.
When you are done filling a bottle and you are pulling the BeerGun out of the bottle, as the tip of the gun comes out of the beer but not out of the bottle (in the head space) stop the gun and hit it with a shot of CO2 and then remove the gun and lay a cap on the bottle. This will purge the head space with CO2. the will insure there is very little oxygen if any at all left in the bottle.
I cant explain the coloration difference in the beer in the photos you attached. I wouldn't think it would oxidize that fast.
One other thought, if that was oxygen in the line it would have to get in there form a leak point. If there was a leak, the system is under pressure and it would be leaking beer constantly and even more when you are not filling a bottle. So it has to be CO2.
Sincerely,
Doug Granlund
Customer Service
Blichmann Engineering
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Hi Doug,
Thanks for your reply. Ok. I understand. It’s still a bit odd that the beers bottled with beergun oxidized that quickly, but I might have done something else wrong upon bottling. I didn’t use the clamps then and I didn’t purge the headspace, for instance.
I have done a new experiment with a new beer (the pilsner that I bottled when I took the picture) and am waiting to see the result in a couple of weeks. I will keep the kegged beer, so that I can compare it with the bottles. I’ll let you know the result:)
Many thanks for your time.
All the best,
Jens
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Hi Jens,
I can't explain the oxidation either.
Let me know how it goes.
Sincerely,
Doug Granlund
Customer Service
Blichmann Engineering