Beer gas in Oklahoma City: blend first, pressure second
The Brewers Association rule adds about 1 psi to the regulator per 2,000 feet of elevation, which at Oklahoma City's height is around half a psi. That is small enough that foam problems here almost always come from the gas mix and line balance instead.
Straight CO2 at the pressure needed to push beer through a long run over-carbonates it in transit. We measure run length, rise and cooler temperature and set a CO2 and nitrogen blend held to plus or minus 2 percent by the TruFusion blender.


