My mind is blown. Calling around to find a price to rehydro a few of my steel tanks when I found out that in Canada, they no longer need to be rehydro'ed and can be filled indefinately according to Transport Canada regs. When did this become a thing as I was under the impression that a 5 year hydro test was mandatory? It's been awhile since I played and part of that reason was needing to rehydro my expired tanks or get new ones.
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Anything under 1L of displacement - below 61 cu inches - does not require hydro.
As far as i know the tank life still applies, though. Anything over 15 years old can't be filled, at least with fiber wrapped tanks. -
The issue with wrapped tanks is both the chemical degradation of the fiber and the epoxy (like how old O-rings break down) and the mechanical stress of repeated expansion/contraction.
With a steel tank, basically there's no chemical degradation, natch, and they're designed so the stresses of the expansion/contraction are under the yield limit of the metal. Like how a spring can be compressed and released thousands of times- think a 'Cocker hammer spring, or a car's suspension- without permanently bending.
That's why the old 2" rule exists- a tank that small doesn't flex enough to cause damaging stresses.
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I've been told about steelies in the past, but wasn't 100 percent sure. I've always operated under they no hydro needed rule. I love the under 62cu fibre tanks don't need to be rehydro'd for 15 years. I only have one tank that it's a 68. Often people don't know an you can find cheap 45/45 for really good prices have have 10 years of use out of them.Comment
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