I don't need no stinkin' vis

[jar546]

Yes, why yes do did need a vis on your EAN steel tanks. This one was the better of the two. Tanks need a tumble and valves need some cleaning inside and out.

 

[Peter_C]

I would say they either need to learn where not to get fills, or they need to learn to keep track of their remaining air pressure.

 

[jar546]

There is a lot of partial pressure filling going on down here so tanks are frequently bled down too quickly to empty them. The condensate is a big issue from that. I also believe the pressure is getting too low. My tanks interiors were impeccable for steel. We send a high percentage out to tumble.


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[redacted]

How does water get into a tank as a result of quickly releasing the pressure?

 

[jar546]

How does water get into a tank as a result of quickly releasing the pressure?

Take one of your tanks and let the gas out quickly. Notice all the condensate forming on your valve. That same condensate forms some inside too and drips down into the tank. There are sometimes lines of rust inside from that happening.


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[redacted]

Take one of your tanks and let the gas out quickly. Notice all the condensate forming on your valve. That same condensate forms some inside too and drips down into the tank. There are sometimes lines of rust inside from that happening.


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Condensation forms on the outside. In order for condensation to form on the inside of the tank, there has to be moisture in the gas inside the tank. An now we are back to the quality (dryness) of the fill gas. But I do suspect that getting good dry gas in FL may be a bit more difficult than it is in drier climates.

 

[spectrum]

I forget, what is the dew point of proper scuba fill air?

 

[jar546]

I forget, what is the dew point of proper scuba fill air?

Can I assume you are talking about the dew point of pure o2 for partial pressure mixing?


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[redacted]

Moisture In SCUBA & SCBA

 

[Aqua-Andy]

Moisture In SCUBA & SCBA

Thanks, that is some very informative reading.