We're happy to share with our customers some resources on the GovReg Secondary Regulators that we carry. Homebrew Happy Hour has done great work on these videos that demonstrate how to use and adjust these great small form factor regulators. Seeing Todd's "keezer" might give you some ideas about how to re-organize your own carbonation systems.
Product showcase: https://www.youtube.com/watch?v=qmyQFfiE86M
How to adjust the GovReg: https://www.youtube.com/watch?v=lmrNSqL01OE
Converting Todd's Keezer to use GovRegs: https://www.youtube.com/watch?v=GKlqLp5SlcU

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GovReg
Adjuster Tool