oxy. & act. bottles

admin

Isn't there a year stamped on the bottles to let you know that it needs to be sent in to be inspected? How long is it between years befor it needs to be done?
Reply:That is the date of the last inspection.  If it's just a number, I believe it's 5 years until the next inspection/hydro.  If it has a + after the year, I believe it's 10 years.  I may be wrong about the years.
Reply:every ten years
Reply:I’ve been studying these tank hieroglyphics for a while.Warped and twisted, remember? Here’s what I’ve noticed;Older tanks look like a test at 10 yrs and then every 7yrs. Newer tanks and inert gases  look like a 10 year pattern.  I notice some cylinders are 100 yrs old! Lots of them are over 80 years old!Some test date patterns look like the cylinders disappear for decades.I’ve noticed obliterated swastikas on some pre WWII tanks. Maybe it was a test symbol that lost favor?NEVER Let oil come in contact with oxygen.  I will not start stupid threads.Don't forget the upcoming air bumper test!
Reply:Don't forget the upcoming air bumper test!