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Co2 cylinders and the Real hydro
I really think that the DOT reg. is a five year hydrostatic testing and
one year visual inspection. I have 15 scuba tanks and they are reg. by
DOT as are all high pressure tanks in the US. A hydro wears down the
life of a tank, I think every year would be a bit much. Look on the
date on the upper part of the bottle, on the shoulder area the list of
numbers tell a lot. The last date stamp on it is the last time it was
hydro'ed. JiM C.
> So while the fire dept may
>be cheaper per refill, it does not have a built in hydro
Can you please describe what is a "one year hydro?"
Although I get my CO2 in replacement tanks from the local welding shop,
refills are done by beer joints and at some aquarium shops.
I would be interested in the proper procedure for refilling CO2 tanks.