Pre-Dive Tank and regs Prep: Worth It?

[mr_v]

Here is a quick procedure that will prevent surprises and significant emotional events.

1. Put the first stage on the tank, ensure that the valve is closed, and try to breathe from the second stage - you should not be able to draw breath.
2. Press the purge button on the second stage and slowly open the tank. As pressure rises, release the purge button; open all the way. The sequence may prevent HP hose damage.
3. Note the HP reading, close the tank valve. Let the tank sit for a few minutes, then check the pressure again - it should be the same. Performing this step in water will let you see bubbles if there is leak.
4. Put the tank in the water and breathe from the second stage to confirm functionality.

There is no need to keep bottles in water unless there is a significant temp difference between water and air and you need to have precise pressure readings for turn points.

 

[Alogansailor]

Another question, when opening the air inlet valve of your tank, is there any benefit to opening it slowly rather than quickly?

I work in industrial automation as a controls engineer. It is very common on many of our systems to have soft start valves and we max out at 150psi. The soft start valves slowly let pressure into the line before opening fully. It helps with the longevity of the equipment. Valves and pistons aren't suddenly being slammed with working pressure and importantly for scuba, seals and flexible hoses are gently loaded with pressure.

 

[Njord fr]

are we talking about ice diving?

Nop, but cold water (40°/50°f)

You have to put your tanks in the water as soon as they’re assembled so the regs don’t freeze.

Got it ! Thanks

There is no need to keep bottles in water unless there is a significant temp difference between water and air and you need to have precise pressure readings for turn points.

@Marie13 and you are not on the same page !

It helps with the longevity of the equipment

Thanks @Alogansailor

 

[Marie13]

It depends on air temp, too!