20lb Beer Gas Tank - how long should it last?

[CadillacAndy]

Just picked up a 20lb beer gas cylinder from the gas man today and have hooked everything up to my stout faucet.

Any idea how long I can expect this tank to last? Is it about the same as co2? They only had 20lb or 50lb tanks. A 5lb co2 tank lasts me about 4-5 kegs with force carbing and serving.

It's so much cheaper than filling a 5lb co2 cylinder, but am just curious how much stout I should plan on drinking and brewing.

Edit- I should specify that this is 25% co2 and 75% nitrogen and I'm pre-carbing the kegs to about 1.3 volumes and have the beer gas regulator set to 25psi.

 

[beaksnbeer]

I use to do the same now I just blend my own. But before that I ran Porters/Stouts at 30-35psi and could run at least 10 or so depending psi and carb levels.

 

[CadillacAndy]

I use to do the same now I just blend my own. But before that I ran Porters/Stouts at 30-35psi and could run at least 10 or so depending psi and carb levels.

Thanks! I guess I better start brewing more beers that'll be good on nitro.