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I keep finding big cans of f-22 cheap a/c gas like 40 for 10lbs sealed pure as the tanks only go out
low list out of china is about 40 a lb locals are about 60 wholesale
sadly needed it as my king valve leaks if the latest goop fix fails
plus the inside leakstop injection I did
the silver solder torch is coming out to seal that sucker up
otherwise I would be trying PROPANE AKA R/F-290 if pure no water but 14 a lb
and unlike f-22 and many other a/c gases one can buy the stuff without a lic/exam/permit
btw many new ice box window a/c unit are propane NOW
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