How Long is a Propane Tank Certification Good for propane tank valves and re-certification? Should I get my DOT tanks?

DOT propane tanks need to be re-qualified after 12 years of manufacture.Sounds good.How do I know if I have a DOT tank?

The Department of transportation regulates the size of portable propane tanks from 5 lbs to 120 lbs.DOT tanks are what they are called.

If you have a 100 gallon tank at home, it could be a DOT tank or an AMSE tank.DOTs will need to be re qualified after 12 years.There is no need to requalify if you have an ASME tank.

You have a D.O.T. once you establish.The manufacture date is the next step.The tank collar has a stamped on it.Tanks need to be recertified every 7 or 12 years depending on how the last certification was done.

A tank can be re-qualified.A qualified technician can do this test.If you have a bbq tank that needs to be re qualified locally, you can take it to where you normally have your tank filled and they will be able to help you.If you have a DOT at your home, your propane provider should be able to re-certify the tank for you.

If you want to requalify a tank, you can do what is called "Proof Pressure" where the tank is tested with air at twice the service pressure.7 years after this date, it will need to be retested.

The last test is a water jacket hydrostatic test where the tank is tested at twice the service pressure.Tanks will need to be re-qualified after 12 years.A certified technician will mark a tank with the date and type of test that was performed.

99% of BBQ tanks are DOT tanks and they will need to be re qualified 12 years after the manufactures date is stamped on the collar of the tank.If your tank is about to be re-certified, just take it to where you normally fill them and they will be able to help you out.You won't be able to get your tank filled right away, but you can exchange it for another.If you have DOT at your home, your propane dealer will be able to requalify the tank using one of the above methods.