Join Date: Oct 2007
Location: West Yorkshire, United Kingdom
Mentioned: 1 Post(s)
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Quoted: 67 Post(s)
Why not just store the cartridge upside down / inverted? Have been doing this with my Ultraflate for the last couple of years with no issues. You could screw in part way, but as you have to dis-assemble to screw in fully, I just leave inverted.
For storing screwed in, the only risk is that if the safety gets knocked off, and the trigger is depressed, the CO2 will be released.