Hi Warren, I have three 30min and one 60min scba tanks, they are all expired but I have a compressor. I remove the valves every now and then and look for signs of moisture or damage. the 30min went for 35.00 shipped and the 60 I gave 74.00 shipped and it still has a year before exp. date. I have kept them all at 4500 for a couple of years, I had to replace a valve on one because it leaked when the valve was open, cost 14.00 on ebay. Now I see where for x-amount of $ they will re-certify them since the laws have changed. Most scba companies now sell refurbs at a substantial savings, worth looking into if you don't do ebay. This may not be for everyone but what I do. I have also got a couple 110in paint ball tanks used from paint ball stores for a hundred bucks ea. Later cave
There use to be boat loads of them on eBay, but that's not the case currently. The only used ones with current hydro I could find for you is at this site:
okay that is what i was hoping to hear. i have friend that can help with the testing and my be able to recertify the bottles. can you fill the bottles from one of the smaller compressors if you take your time and follow their temperature and runtime restrictions? what type are you using?
If one looked in the proper place...IE in Darkside > "Support Equipment for PCP" one might find stickies like this about bottle lifehttps://www.gatewaytoairguns.org/GTA/index.php?topic=158055.0