Uniweld N20 20 Cubic Foot Nitrogen Tank Empty

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Hi, there! Thank you for your query concerning the Uniweld N20 nitrogen tank. Yes, this tank is DOT tested and approved, meeting the DOT3AA2015 specification. The last test date is stamped on the cylinder itself, as nitrogen tanks are typically tested every 5 or 10 years. To determine the last test date, you would need to physically inspect the tank for the stamped information. To purchase this Uniweld N20 nitrogen tank, please click "Add to Cart," fill in the required fields, and we'll take care of the rest. Thank you for choosing PlumbersStock. Have a great day!