Pressure within a Beer bottle?

[Gulpitdarn]

Has anyone tried some way of measuring the pressure within a full beer bottle? (low carbonated dark beer) Maybe with the use of a tyre pressure valve attached to a gauge?? I'd like to know what the pressure would be.

I'm wanting to find out what sort of minimal pressure would be needed for a glass drinks dispenser. Could I get away with using one if the pressure is kept very low but enough to just keep beer carbonated.

What are your thoughts?
Edit: want to use something like picture below...

 

[Gerryjo]

I have two 5 litre Kilnet drinks dispensers like your own but the only problem is they come with a plastic tap and the seal I know is not much use under pressure as I have tested one myself just using sugar water and bread yeast and did notice it weeping
You could try changing the tap and seal for stainless and silicone but the fact that they are clear means having to keep them in cool dark place and drank very quickly.Would possibly suit cask type ale served with a very low psi.

PS mine have the spring clamp lid as opposed to the screw on type.

 

[Gulpitdarn]

Thanks Gerry... I notice there are a lot of sprung fit glass top types, I may op for a metal screw top like in picture, hopefully they'll be 4" so I can replace with a plastic barrel top seen on ebay, or just modernise it along with perhaps a pressure gauge.

With a wide neck I might also be able to replace tap if it leaks. All trial and error I think which can add up to expense. My main cause for concern is to avoid having one very large glass dispenser bomb!

 

[Gerryjo]

Thanks Gerry... I notice there are a lot of sprung fit glass top types, I may op for a metal screw top like in picture, hopefully they'll be 4" so I can replace with a plastic barrel top seen on ebay, or just modernise it along with perhaps a pressure gauge.

With a wide neck I might also be able to replace tap if it leaks. All trial and error I think which can add up to expense. My main cause for concern is to avoid having one very large glass dispenser bomb!

If you want to test under pressure you try some coke and mintos as I had my children try this with my pressure barrel to make sure it was holding.

 

[Honk]

I wouldn't risk it, you could possibly get away with it a couple of times but sooner or later your going to overcarbonate your beer. Stick with something designed to hold carbonated drinks. (Easykegs are a cheap solution)

To answer the original question have a look at keg carbonation charts to calculate the psi. A typical English ale at 11 Deg c and 1.8 volumes co2 has 9.5 psi. At 20 Deg c 17 psi.