- All paintball tanks must be tested for safety every 3 or 5 years. The only exception to this are aluminum tanks less than 2-inches in diameter and under 2-feet long.
- All fiber-wrapped tanks expire in 15 years from when they were manufactured, regardless of the last hydro test date.
- Tanks are considered generally safe as long as the hydro test is current and there are no unraveled/exposed/damaged fibers sticking out.
How to read a Hydro label on a fiber-wrapped tank
TC-SU #: This is the certification for use in Canada. If your tank doesn't have it, you can't legally use it in Canada.
DOT-E or DOT-SP #: This is the USA cert license number. You can google that whole thing "DOT-E #####" and get the full document that tells you how often your tank needs to be retested. For most tanks in the USA it's every 5 years. DOT-E 9634 is one example of a tank that requires testing every 3 years until it's 15-years old and then should be thrown away.
## © ##: This is month and year that the tank was manufactured. For the purposes of testing and expiration dates, the Department of Transportation counts from the first of the month. In the example above, this tank will be unusable after January 1, 2019.
Hydro recertification label
## [X] ##: This is the month and year that the tank was last hydro tested. The numbers in the middle are the D.O.T. certification of the place that did the test for you. Every hydro tester has their own unique code. This tank was tested at Acme Fire Extinguisher Company in Oakland, CA in June 2008.
Reply below with a DOT-E number and I'll dig up who makes your cylinder, and how often it should be tested.
Edited by CrazyLittle, 15 June 2012 - 03:59 PM.