VEVOR Beer Growler Tap System, 4L Mini Keg, 304 Stainless Steel Pressurized Beer Growler, Keg Growler with Pressure Display, CO2 Regulator Faucet, Leak-Proof Ring For Draft, Homebrew, Craft Beer
N2 can be used, but the operating pressure of the pressure reducing valve must not be higher than 23 PSI. It depends on how much pressure you need in your usage scenario.