CO2 tools
 

Through my work I have 2 CO2 tanks, and a few nitrogen tanks.

As I have seen 4x4 guys use them on the trails. I would like to step up my pick a part game here too.

Some seem to be over $300, and some around $100.

How much do you really need to spend to not have a uncontrolled rapid expansion of a gas due to poor design work or quality?