Jason P What is the expected service life of aluminum tanks?
TOM M I have had my two tanks serviced every year and they need to be pressured tested after 5-years, I have not asked about how long they last - but mine still look brand new.
SHAWN B Your lifetime! Will outlast the k-valve. Be sure to have both your tank and k-valve inspected anually.
JONATHAN H I don't know exactly how long they're supposed to last but I bought mine five years ago and just had it hydro-tested. The test revealed that it is as good as new and ready for many more years of diving. As long as you keep water out of it and service it regularly it should last a VERY long time.
JASON M I have had this tank since 2007 and it has worked fine for me. My only complain is the valve isn't real comfortable to carry. Friend of mine bought another, more expensive, tank and his is alot easier to carry. OTherwise it holds air and has pasted inspection every year.
JACOB B Tanks are required by law to be hydrostatically tested and visually tested every 5 years. Most people, myself included, feel it is a good idea to have them visually inspected every year when you take the rest of your gear in for maintenance and service. As to the life of the tank, as long as you maintain it properly through inspections and changing of o-rings on the valve, the tank will last many many years. I have been using the same tanks for close to 10 years and I do not see any reason I cant use them for many more. If I were a dive operator my tanks may see a shorter life span just due to use and abuse but as a personal user I can take good care of mine. I hope that answers your question.
Chance.