Didn't look at the link; looking at the pick-
1. Is that a flare fitting? CO2 regs normally have a NPT reverse thread, female, to mount on CO2 tank...
2. The 'top' gauge, typically the low pressure gauge, is awfully high... both are for a low pressure out.
3.I don't know what that out is....
Even if it can do low pressure for beer, I'm thinking once you get adapters, it's not such a good deal.
Broken Face Brewery