Cave fills?

[Manatee Diver]

These threads always seem to come down to cave divers saying "We don't have any problems despite filling it like this over the years," while people outside of cave country saying "You shouldn't overfill tanks, it is dangerous."

Which is right? That is for each person to decide, but I have a set of LP85s in my trunk that are at 3,800psi the last time I checked them.

 

[SandyRobinson]

I am currently diving (overfilling/cave diving) a set of PST lp104s that have a born on date of 1978. The previous owner was Forrest Wilson (Inventor of the Wilson Line Arrow) who certainly overfilled and dove them for years. So far so good. From what I have seen, overfilling is not nearly as destructive to a tank as saltwater anywhere, water in the tank, and tank boots.

They may be older than you!

 

[Dominick Gheesling]

They may be older than you!

Not quite,

I was 9 yrs. old when these tanks were made

 

[Superlyte27]

I'm obviously not an expert here, but I have heard that overfilling reduces their lifespans from decades to years.

Not true at all, and I am an expert.

 

[Rusty Shackleford]

I am still waiting for a picture of a chrome moly vanadium lp steel cylinder that failed catastrophically. I always think of these and the threaded brass valve that sits on top. Now, which is the weaker metal?

BTW, Chrome moly vanadium is what the Army specs for gun barrels.

 

[Brett Hatch]

I am currently diving (overfilling/cave diving) a set of PST lp104s that have a born on date of 1978. The previous owner was Forrest Wilson (Inventor of the Wilson Line Arrow) who certainly overfilled and dove them for years. So far so good. From what I have seen, overfilling is not nearly as destructive to a tank as saltwater anywhere, water in the tank, and tank boots.

Not true at all, and I am an expert.

Great, thanks for chiming in guys, there is a lot of misinformation out there. Especially on this topic, for some reason.

 

[SandyRobinson]

Not quite,

I was 9 yrs. old when these tanks were made

Forrest was kind enough to give me a pair of steel 72s from 1969 (I was 12). While my daughters have used and like them, I have not yet. But I think they will be a nice set for Jug!

 

[BRT]

I am still waiting for a picture of a chrome moly vanadium lp steel cylinder that failed catastrophically. I always think of these and the threaded brass valve that sits on top. Now, which is the weaker metal?

BTW, Chrome moly vanadium is what the Army specs for gun barrels.

Someone will show you a picture. I have even seen one in person. It was a rusty mess. Nothing I would put shop air pressure in.

 

[Superlyte27]

Someone will show you a picture. I have even seen one in person. It was a rusty mess. Nothing I would put shop air pressure in.

There has never been a properly inspected and maintained steel scuba tank rupture.... ever.

 

[BRT]

There has never been a properly inspected and maintained steel scuba tank rupture.... ever.

I believe that to be true. And never is a long time.