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Old 04-12-2008, 02:30 AM   #1
StankAle
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Default Why oh why is my pressure dropping?

Hello all, I need some help.
I kegged my first beer about a week ago. I set my MicroMatic regulator to 30 PSI and tried the shake routine to force carbonate.
I have 5 feet of 3/16" beer line in my system. The temp in my fridge is a steady 36F.
I was pouring foam like crazy, so I purged the Co2 and set my regulator to 10.7 PSI to serve.
I am still getting more foam than I want but that is another story.
My question, now that you have some background, is this:
Why after pulling a beer or two does my serving pressure fall to about 7 PSI?
I am not leaking anywhere...so I can't figure it out.
I hope some of the wise ones out there will chime in.
Thanks,
Dustin

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Old 04-12-2008, 02:45 AM   #2
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Does it come back up?

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Old 04-12-2008, 02:46 AM   #3
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First off, try checking the kegging sticky as I think you may have too little hose for the pressure. As far as the pressure dropping, I think you may need to adjust the regulator a bit better. On the regulator I've been playing with I need to go slightly past the amount and then it will settle in at the correct pressure.

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Old 04-12-2008, 03:22 AM   #4
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I think you should be around 6-8 psi's with that short of a hose. Dont know enough to answer your other question but the high pressure is why you are getting all the foam.

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Old 04-12-2008, 04:13 AM   #5
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Quote:
Originally Posted by bru-er
Does it come back up?
It only comes back up when I force it to.
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Old 04-12-2008, 02:20 PM   #6
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Quote:
Originally Posted by StankAle
It only comes back up when I force it to.
How do you 'force it to'?
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Old 04-12-2008, 04:19 PM   #7
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3/16" ID hose has a resistance of about 2lbs per foot... so if he has 5' of beer line, he is losing about 10PSI from the keg to the tap... I dont know that he needs MORE beer line. As for he pressure drop... that is odd, I have never had that problem as long as my CO2 is ON and beackfilling the headspace when I am dispensing.

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Old 04-12-2008, 04:30 PM   #8
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Quote:
Originally Posted by ErikH
How do you 'force it to'?
By turning up the co2 pressure using the regulator knob.
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Old 04-12-2008, 04:34 PM   #9
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If your regulator is in the fridge, you're just experiencing the frustration we've all had in adjusting a cold regulator. It takes a few tries to get it just right due to the inflexibility of the regulator diaphragm at cold temps.

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Old 04-12-2008, 04:38 PM   #10
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Your gauge could be inaccurate - my secondary regulator has a 0-40 PSI gauge that is wildly inaccurate. When it says 10 it means ~30. I keep meaning to replace it, but for now I set the pressure by charging the keg to 10 PSI with my primary reg and then ramping the secondary reg up until it just squeaked a little CO2 in, and backed off slightly.

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