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Old 10-23-2021, 11:20 AM   #1
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Tank expiration

My tanks are stamped "must be requalified within 10 yrs of MFG date" can they go 12 years or do they have to be done at 10 years?
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Old 10-23-2021, 11:43 AM   #2
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If they cause damage to somebody their lawyer will insist that it should have been done at 10 years.
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Old 10-23-2021, 11:49 AM   #3
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5 years or 10 years. See info here:

https://www.phmsa.dot.gov/sites/phms...%20that%20date.
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Old 10-23-2021, 11:52 AM   #4
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The tank can be recertified and restamped with a new date if it qualifies (no rust, dents, valve ok, etc).
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Old 10-23-2021, 02:48 PM   #5
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tank expiration

I guess I'm missing something here because I thought a new tank could go 12 years before it had to be requalified.
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Old 10-23-2021, 03:07 PM   #6
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Several years ago the recertification was 12 years from new, but a few years ago they changed it to 10 years.
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Old 10-23-2021, 03:12 PM   #7
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Originally Posted by Bama Rambler View Post
Several years ago the recertification was 12 years from new, but a few years ago they changed it to 10 years.
This is the way I remember it 12 years recertify the tank and get another 5 years. Place I get propane never checks the tank date code if the tanks are in good shape and not rusty. The sad thing is some of the tanks you buy brand new or get on brand new RVs are all ready 1 to 2 years old by the date code.
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Old 10-23-2021, 07:58 PM   #8
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I'm getting to that age where I might expire before my tanks.

LOL
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Old 10-23-2021, 08:34 PM   #9
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When someone wont fill it i do an exhcange and grab the best looking tank i can find.
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Old 10-23-2021, 10:45 PM   #10
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When someone wont fill it i do an exhcange and grab the best looking tank i can find.
Which works well IF you have a 20lb tank.....
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Old 10-24-2021, 04:45 AM   #11
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I had 30 gal tanks on my old trailer. I took them into a local propane gas company to get the valves changed to the newer style. This was like 9 years ago. They gave me a receipt but they didn't stamp the tanks that I know of. I'm thinking now that they just changed the valves but didn't do a pressure leak test. They just filled them and gave them back to me. Of course, at that time I didn't know about the recertification rule, I just figured hey, it's a propane company, they are the professionals, they would tell me if anything was needed right? Hmmm....reckon not.
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Old 10-24-2021, 07:04 AM   #12
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Originally Posted by Bama Rambler View Post
Several years ago the recertification was 12 years from new, but a few years ago they changed it to 10 years.
Best just check your tank date code as that is what most places due when filling. Out of date they will not fill. Later RJD
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Old 10-24-2021, 08:15 AM   #13
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I've always used 12 years on tanks <100 lbs. This thread noted 10 so in doing some digging (thanks Al Gore), I believe 10 years for Canada and still 12 for US.
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Old 10-24-2021, 02:06 PM   #14
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I've always used 12 years on tanks <100 lbs. This thread noted 10 so in doing some digging (thanks Al Gore), I believe 10 years for Canada and still 12 for US.
Nope. That changed about 2 years ago: 49 CFR § 180.205

DOT 4-series propane cylinders must be requalified following their manufacture date every 5 or 10 years
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Old 10-24-2021, 03:26 PM   #15
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Nope. That changed about 2 years ago: 49 CFR § 180.205



DOT 4-series propane cylinders must be requalified following their manufacture date every 5 or 10 years
10 years is easier to keep track of than 12 for most fill station operators.

"2017 plus 10 is 2027" for 12 years "2017 plus 12 is-- ----- anyone got a calculator???"

For many today basic math skills are a lost skill. :sad:
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Old 10-24-2021, 09:31 PM   #16
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It's not rocket science. Take your non 20lb tank in to get it refilled until they won't refill it and then get it recertified or buy a new one. Easy.
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Old 10-24-2021, 09:49 PM   #17
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Had my 30lb. tank filled a few days ago. Unlike the 20lb. tanks(12 years) it is stamped "no refill after 10 Years." Propane distributor will re-certify for 5 years for $35. I have 2 tanks so re-certify is much cheaper than $100. per tank for new. I'm in California but I think we still go by the U.S. rules.(sometimes .)
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Old 10-25-2021, 08:29 AM   #18
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Had my 30lb. tank filled a few days ago. Unlike the 20lb. tanks(12 years) it is stamped "no refill after 10 Years." Propane distributor will re-certify for 5 years for $35. I have 2 tanks so re-certify is much cheaper than $100. per tank for new. I'm in California but I think we still go by the U.S. rules.(sometimes .)
That is highway robbery! A 5 year re-certification is merely an "external visual inspection". Where I live, $35 will get you a 10 year re certification with either a Hydrostatic test or Proof Pressure Test. I was in HD yesterday and they had Worthington 30lb cylinders for $72 each.
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Old 10-25-2021, 08:36 AM   #19
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Its not easy to find a dealer that will actually hydrostatic test a tank in my area so I paid the 25.00 for a valve reseal and visual inspection that adds 5 years I have 30lb tanks.
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Old 10-25-2021, 08:53 AM   #20
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I had 30 gal tanks on my old trailer.
These must have been massive! A gallon of propane weighs 4.2 pounds making each tank weigh probably 150 pounds (including the cylinder). I sometimes wish 30 pound tanks would fit on my Roo.

As for expiration? I'm sure some of mine are older but the propane shop keeps filling them. The sky ain't falling.

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