Have an ancient tank that you wanna use on a field but don't know if it's safe to? Check this out. It is updated by the feds on a regular basis to keep up with changing Hydro rules. Companies will also stop paying on their stamp therefore making them unusable, even if they fall under the 2x2 rule (like Fuel co2 tanks).
https://www.ecfr.gov/cgi-bin/text-id..._1209&rgn=div8
Speaking of the 2x2 rule, here is Cliff Division's guidelines on it pertaining to their tanks.
https://www.catalinacylinders.com/fa...num-cylinders/
https://www.ecfr.gov/cgi-bin/text-id..._1209&rgn=div8
Speaking of the 2x2 rule, here is Cliff Division's guidelines on it pertaining to their tanks.
https://www.catalinacylinders.com/fa...num-cylinders/
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