UP 1L co2 bottle failure (safety valve venting)

[ltsai]

Thanks Ian. That means there is a difference when a co2 tank is marked in kg/lbs or in liters.

 

[ian_m]

That means there is a difference when a co2 tank is marked in kg/lbs or in liters.

Probably. The fire extinguisher at work has 2.87KG CO2 stamped on it as its capacity. 2.87KG x 68% -> 1.95KG.

Also got its weight of 4.87Kg which is the weight (with horn removed) when full of 2Kg CO2.

 

[X3NiTH]

So is it an overfill then?

What weight should I expect the cylinder to be after filling?

 

[ltsai]

It looks like for a 1L tank, it should hold 0.68kg of liquid co2.

Mine is the paintball version without the golden knob and it weighs about 979g when empty. After a refill, it will usually be about 1.5 to 1.7kg. My LFS doesn't use a digital scale and the tank is bathed with cold water during the top up.

 

[ian_m]

What weight should I expect the cylinder to be after filling?

So looks like the 1litre UP tank should be filled with 680gr of CO2.

the tank is bathed with cold water during the top up

Two reasons:-
1. colder tank means less boiling CO2 (paintballers often put their tanks in the freezer first)
2. if it explodes you won't get impaled by flying shrapnel .

 

[X3NiTH]

Thanks Ian!

Yeah the tanks were freezing cold when I collected them.