When does your cylinder needs to be
“Re-Qualified” or Hydro Tested?

- Fiber Wrapped/Carbon Fiber (FRP) - Usually every 3 years, but some have switched to 5. Call us with the E number and we will look them up if you can't find then on the DOT Site.

- Steel (3A or 3AA marks) - usually every 5 years, but some large storage bottles have star marks (*) on them, allowing 10 year test cycle.

- Steel (3HT marks) - Every 3 years.

- Aluminum (3AL marks) - every 5 years (SCUBA, CO2 and O2 bottles usually)

How long can I use my cylinder if it is properly Hydro Tested when required (without failure)?

- Fiber Wrapped/Carbon Fiber (FRP) - Usually 15 years, some new bottles have been extended for 20 years.

- Steel (3A or 3AA marks) - Unlimited

- Steel 3HT bottles - 24 years

- Aluminum (3AL marks) - Unlimited

Why do I need to Hydro my cylinders?

Federal Law requires cylinders to be tested periodically for YOUR SAFETY!
It is against the law to fill an out-of-date cylinder. Not to mention, you don’t want this to happen to one of your cylinders:

Exploded Tank 1
Exploded Tank 2

Hydrostatic Testing Facility
5000 Burwell Street
Bremerton, WA 98312

Also home to Sound Dive Center, HydroLab, and HydroTester.com!

 2008 Fire Hydro. All Rights Reserved.
5000 Burwell Street, Bremerton, WA, 98312. (360) 373-6141

Scott Air Packs

Hours of Operation:

Monday - Friday: 10 - 6
Saturday: 9-5
Sunday: 10-3

Call us:



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DOT: Department of Transportation