Pro-Line™ CO2 Gas Blender, Lager Blend: 60% CO2 & 40% N2, Stout Blend: 25% CO2 & 75% N2, with built
in leak detector.
Pictures and more information at https://www.micromatic.com/en-us/pro-line-co2-gas-blender-double-blend-60-40-lager-stout-inline-leak-detector/p-yeN-TQaucUyBTlzfrGJs6A
Cost new: $1701
Used for 5.5 years at downtown Springfield's Terra Ferment.