The Flame King 100LB Propane Tank is empty pre-purged vacuum ready for filling of propane avoiding you the cost and headache of purging your new tank. Comes with a premium POL valve assembly. It is built from high-grade welded steel and powder coated for rust prevention. The tank has been x-ray and hydrostatic tested. You can be sure to transport safely both in the US and CA as they are DOT and Transport Canada certified.