Whose moronic idea was it to stamp the cylinder crown?

[ofg-1]

What is the history of cylinder markings? Who came up with the idea? Since PADI was the first commercial operation in existence, who made it compulsory? Don't answer if you don't know the answer.

It is just another example of PADI and the deep state trying to control our lives. Stand up for your rights, get a big angle grinder and grind off all those numbers.

 

[tursiops]

It is just another example of PADI and the deep state trying to control our lives. Stand up for your rights, get a big angle grinder and grind off all those numbers.

L-D, this is a great suggestion. Please do this and let us know how it goes.

 

[pisauron]

That particular one is not. It has no DOT/ICC markings as it predates both of them. It still passes test at its rated pressure, but it can't legally be put into service. There was a very large window after the ICC standards were formed where you could stamp the old cylinders and grandfather them into current service requirements. I have many old pre war oxygen bottles that had the cylinder pressure stamped into them at a later date. It is easy to spot as the size and font don't match on the service pressure. That was legal to do for about 50 years. During that time, this bottle was never restamped and it is beyond the window where it was legal to do so. Now it just sits there as a piece of history.

If it can't be used why do you test it?


Anyhow, pretty cool piece of history!

 

[Tracy]

If it can't be used why do you test it?


Anyhow, pretty cool piece of history!

To see if it was still good. In actuality, anybody could stamp a service pressure into it and it would be tested as stamped and put back in service. The retester is no longer allowed to do it. That loophole of grandfathering has passed.

 

[pisauron]

To see if it was still good. In actuality, anybody could stamp a service pressure into it and it would be tested as stamped and put back in service. The retester is no longer allowed to do it. That loophole of grandfathering has passed.

Cool
That begs the question - does it pass because it's not in use?

 

[Tracy]

Cool
That begs the question - does it pass because it's not in use?

Not sure what you mean. It was in active use for 100 years.

 

[pisauron]

Not sure what you mean. It was in active use for 100 years.

I am confused.
I thought it's not beeing used anymore

 

[Tracy]

I am confused.
I thought it's not beeing used anymore

It isn't. It was in service from 1904 to 2004. That is 100 years. The last hydro expired in 2004. When it came in for test, the retester noticed that it had never been restamped and they can't legally do it anymore.

 

[pisauron]

It isn't. It was in service from 1904 to 2004. That is 100 years. The last hydro expired in 2004. When it came in for test, the retester noticed that it had never been restamped and they can't legally do it anymore.

Oh i get it now
Really awesome!

Was it used for diving? What fits that thread?

 

[Belzelbub]

Was it used for diving? What fits that thread?

Perhaps only by a giant. That looks to be a large industrial cylinder or fill station bank cylinder. The outer threads on the neck are for the protective cap.