to transfer a carbonated beer, with minimal difficulty, i.e. foaming, you have to have equal pressures in the receving tank and the mother tank. to do this, pressurize the receiving tank with CO2 (and blow off the O2 in the tank until you smell pure CO2 running out of the blowoff - it will burn your nose when it is approaching pure CO2) and from the gas blowoff of the receiving tank, hook up a hose and run it back to the top of the mother tank. this will not only prevent foaming in the transfer, but can prevent oxidation.
this doesn't work for filtration, however, as the filtration media rouse the CO2 from suspension and cause foaming. pumping foam is almost impossible (except with special pumps that fiemen use to pump foam onto fires), so don't bother. in this case, it is better to filter first and then krausen the beer in the bright beer tank, letting the yeast settle before packaging or serving; or not, since clouding at this stage would be minimal.
cheers, John
this doesn't work for filtration, however, as the filtration media rouse the CO2 from suspension and cause foaming. pumping foam is almost impossible (except with special pumps that fiemen use to pump foam onto fires), so don't bother. in this case, it is better to filter first and then krausen the beer in the bright beer tank, letting the yeast settle before packaging or serving; or not, since clouding at this stage would be minimal.
cheers, John
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