I'm hoping someone smarter than I can break down exactly what is happening when we pull a PRV on a pressurized keg or fermenter.
It sounds straightforward, but is it? I've been kegging for a few years and recently decided I haven't given this enough thought as I try to hunt down all the barbarian oxygen at the gates.
If I have an empty and CO2 pressurized keg, not hooked up to CO2 and I pull the PRV is the CO2 in the keg just firing out simply due to the pressure I put into the keg? Or, is the CO2 in the keg actually being displaced by the oxygen in the room until they both equalize? Does the actual PSI I'm the keg make a difference in this situation? For example if, just for fun, the keg is pressurized to 100 PSI and I pull the PRV will there be no oxygen entering the keg until the CO2 pressure remaining falls below X PSI?
If that same keg has CO2 attached while the PRV is pulled, is there a certain minimum PSI/BAR needed to overcome the atmospheres ( ?) of oxygen in the room?
Thanks Folks!
It sounds straightforward, but is it? I've been kegging for a few years and recently decided I haven't given this enough thought as I try to hunt down all the barbarian oxygen at the gates.
If I have an empty and CO2 pressurized keg, not hooked up to CO2 and I pull the PRV is the CO2 in the keg just firing out simply due to the pressure I put into the keg? Or, is the CO2 in the keg actually being displaced by the oxygen in the room until they both equalize? Does the actual PSI I'm the keg make a difference in this situation? For example if, just for fun, the keg is pressurized to 100 PSI and I pull the PRV will there be no oxygen entering the keg until the CO2 pressure remaining falls below X PSI?
If that same keg has CO2 attached while the PRV is pulled, is there a certain minimum PSI/BAR needed to overcome the atmospheres ( ?) of oxygen in the room?
Thanks Folks!
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