Something inside my tank?

[The Kraken]

Yep, it's my bet that it's the valve uvula, too . . .

the K

 

[wedivebc]

Whooa, if you drain the tank quickly, it will cool down and collect condensation on the inside when you open it. It's better to either let it drain slowly, or drain it most of the way, maybe 100 psi, then let it rewarm to ambient before draining completely.

I would suggest going to an LDS, even if it's not the one that did the hydro and VIP, although it might cost you the price of an airfill.

Can you explain this? Where does the moisture come from? How does stopping at 100psi help. I have never heard this method before.

 

[jonnythan]

The condensation comes from the moisture in the outside air.

Cold surface + warm moist room air = condensation inside the tank.

Outside, too. But just let it air dry and it's fine.

Or you could drain it, then close the valve and wait a couple hours til the tank warms up to room temperature.

 

[JahJahwarrior]

The air inside the tank won't condense on the tank, right? Becuase there's no water in it. But if you took off the tank valve right after draining a tankall the way, with the tank stillchilled a little, then outside air would get in, would cool off, and leave moisture onthe walls.

 

[jonnythan]

You can also drain the tank, then let it sit for an hour or two to warm up to room temperature before you actually remove the valve.

 

[Dive-aholic]

Condensation will not form inside the tank as long as there is pressure in the tank. You can let it drain quickly as long as you are there to slow it down at then end of the drain. Personally, I hate hearing that noise for very long. I drain fast and never had a problem with condensation the way I do it.

It is the dip tube. If this happened after a recent vip then the shop needs to correct the problem for free. To be honest with you, if you are getting clean fills and never letting your tank run dry, you don't even need the dip tube. But you do need to trust the shop you're getting fills at.

 

[JeffG]

I didn't say "open the valve to full, and blast all of the air out of it."

Thats how I do it. Throw a towel over it to cut down on the noise.

 

[SCUBAJENNIFER]

Thats how I do it. Throw a towel over it to cut down on the noise.

Yes you do!!

 

[GreenDiverDown]

Yes you do!!

Hahahaha!

I figured Jeff as more of a pillow guy... but... whatever works!

 

[JeffG]

Hahahaha!

I figured Jeff as more of a pillow guy... but... whatever works!

LOL.........................