how many shots from a fire extinguisher?

[the_original_damo]

hi i was wondering if anyone new how many shots you could get from a fire extinguisher just a 2.0kg one and i will gte my mates dad to fit it with a schrader valve coz i cant weld and i will fill it up with air till it is at its recomended psi thanks to all who post

[Rambo]

It depends on the size of the chamber.2kg of CO2 mean about 1000L of gases.You should be able to calculate the rest...

[Brian the brain]

It depends greatly on the kind of extinquisher it is.If it's a CO2 extinquisher you'll be happy Cause those can take 900 psi or 60 bar.
If you fill it with CO2 you'll get a lot of shots out of it.If you use air you'll get a lot less cause air doesn't liquify at that pressure.You can't pile air up into a liquid like you can co2( well you can at 280 bar but that's a different story)
If it's the kind that uses powder ;but is operated by a 16(yes 16)gram CO2 capsule, it's probably only safe up to 18 bar and can't take the liquid CO2.