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Old 12-26-2022, 02:47 AM   #21
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THOR #28145
LP Tank Age???

This sort of an off-topic question certainly LPH does not have this problem. Has anyone ever had an RV mounted LP tank "AGE OUT" where the LP service station could not legally refill the tank. I have had this happen on a gas grill bottle. I just wonder whether similar rules apply to the propane tanks built into RVs. If such rules apply to built-in LP tanks how old is too old?

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Old 12-26-2022, 03:40 AM   #22
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THOR #1469
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Originally Posted by Dan-sr@perra-us.net View Post
This sort of an off-topic question certainly LPH does not have this problem. Has anyone ever had an RV mounted LP tank "AGE OUT" where the LP service station could not legally refill the tank. I have had this happen on a gas grill bottle. I just wonder whether similar rules apply to the propane tanks built into RVs. If such rules apply to built-in LP tanks how old is too old?
No expiration date for ASME (Motorhome) tanks. 12 years for DOT (portable) tanks.
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Old 12-26-2022, 03:53 AM   #23
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Originally Posted by EA37TS View Post
No expiration date for ASME (Motorhome) tanks. 12 years for DOT (portable) tanks.
Correct.. and Qualified inspectors "Can" re-inspect then "Stamp" the re-inspection date on the DOT tank..which will give it another 12 years of usage.
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Old 12-26-2022, 12:19 PM   #24
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Originally Posted by saddlesore View Post
Correct.. and Qualified inspectors "Can" re-inspect then "Stamp" the re-inspection date on the DOT tank..which will give it another 12 years of usage.
I looked up the differences between DOT and ASME tanks, this is what I found.

DOT & ASME Propane Tank Differences
Should I buy a DOT tank or an ASME tank?
Here are the basic differences?

ASME Tanks.

No Recertification period required.
Slightly thicker steel.
Slightly heavier than a DOT tank of the same capacity.
Designed for stationary installation. Not designed to be moved when containing propane.
Design & Standards are governed by American Society of Engineers. (ASME).




DOT Tanks

Recertification period requirements are: 12 Years from date of Manufacturing, then every 5 Years.
Designed for Portable Applications. Can be transported with propane, if done so according to Code.
Design & Standards governed by Department of Transportation (DOT).

So the 12 years only applies to the first inspection for DOT tanks then every 5 years thereafter. Thanks to all those who replied, your responses helped me figure out what to search for.

Also, not all vertical tanks are DOT tanks. You can get ASME Vertical tanks. Tanks under 40 LB must have OPD valves. even for ASME tanks. I have not been able to verify whether or not ASME vertical tanks require DOT recertification.

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