Unload cartridge from CO2 injector

I just bought a mini co2 injector for charging kegs in the road. After serving I have a half spent CO2 cartridge.

Should I take the cartridge out of the injector case or just leave it in until the next time I use it? I am worried if I leave the cartridge in the co2 will slowly leak out. Then again I am not sure the cartrige can be taken out if the it doesn’t reseal when removed from the case.

This what I bought:
http://morebeer.com/products/co2-injector-ball-lock.html

It will not reseal. The valve has a needle that punctures a bit of foil.

I’ve always released the left over gas and tossed the cartridge.

How do you safely remove the gas?

This thing didn’t come with instructions.  Reading on Internet that I need to be careful.

I guess I can take the gas QD off then pull the trigger with it facing away from me. I am little nervous to take the QD off since I need to apply force with my hand right near the trigger. I don’t want to accidentally pull the trigger while the QD is connected as that is supposed to be dangerous.

Exactly the drill. Take the disconnect off and pull the trigger. Don’t be too afraid, but for sure be cautious. Once the disconnect is off the danger is near nil.

And yep, pulling the trigger with the disconnect on can be dangerous. Ask Amanda K.

You could hook it up to a keg and dump the gas if you are worried.

Thanks. I got the QD off with pliers. I was just nervous after reading warnings on the web.

+1 - hold down the trigger while opening the PRV on the keg if you’re really worried.