The process for purging a bright tank to be transferred into as I was taught is to blow CO2 in through the bottom with the valve cocked until you no longer smell air coming out of the blowoff arm. Instead you are knocked over by the brutal aroma of CO2. Close off blowoff and pressurize to 10psi.
Sounds reasonable. If you wait a bit however it seems like you can get "air" coming out of the arm if you open it.
How long does it take to purge every last bit of O2 out of the tank?
Does it really matter that there may be a bit of O2 left in the top of the tank knowing that CO2 is heavier than air and is blanketing the incoming beer while forcing the residual small portion of O2 out?
When is the tank purged enough?
Thanks
Killroy
Sounds reasonable. If you wait a bit however it seems like you can get "air" coming out of the arm if you open it.
How long does it take to purge every last bit of O2 out of the tank?
Does it really matter that there may be a bit of O2 left in the top of the tank knowing that CO2 is heavier than air and is blanketing the incoming beer while forcing the residual small portion of O2 out?
When is the tank purged enough?
Thanks
Killroy
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