Another Co2 Question

[may1966]

I have my regulator set at 13 psi but it goes up when its hot outside and goes down when its cool could this be a gad regulator thanks

[cubby_swans]

Originally Posted by may1966

I have my regulator set at 13 psi but it goes up when its hot outside and goes down when its cool could this be a gad regulator thanks

when it's hot, the gas expands resulting in higher pressure. When it's cold, gas contracts, resulting in lower pressure. Your regulator is working correctly. Don't know what your setup looks like, but you'd get a consistent reading if you kept the co2 inside the kegerator/fridge so that it's temperature remained constant.

Blow up a balloon. The pressure inside is what causes the balloon to expand. Now stick it in the freezer. It shrinks because the air inside has contracted, resulting in less pressure against the walls of the balloon. Pull it out of the freezer, and when the air inside warms up, the balloon expands again.

[may1966]

yes I know that but I thought the regulator would hold a constant psi regardless of what was in the tank I know the pressure goes up when its hot but shouldent the reg keep constant psi on the keg thanks again .....

[Scott Zuhse]

Normally when a low pressure gauge fluctuates this indicates a leak. Search forum on leak detection and perform this process.

[bard]

Like the pro mentioned, something is wrong with the regulator if the pressure you're applying to the keg (low pressure gauge) fluctuates due to cylinder pressure (high pressure gauge).