Dive Tank, Help Please!

[Mokie]

Hey,

About Dive tanks.


How many 3000psi fills would I get out a:

12L 232bar

15L 232bar


How many 4500psi Fills would I get out a:

12L 300bar
15L 300bar



Thanks in advance,
Mokie.

 

[Tom Allen]

For every version of dive tank you've asked about, you will only get one full pressure fill, each consecutive fill will be proportionately lower.
In the days before hpac at events, everyone used 12L 300bar dive tanks, and you would definitely have no problems running a marker for a full days play off one.

As far as amounts of fills, someone else may have more exact figures for you.

 

[Skeet]

Hmmm...

Well a 12l 3000psi tank holds approximately 80 cubic feet of air.

Which is 2160 Cubic litres

so your 1.1L tank, will hold 180 cubic litres of air.

So...if you roughly work it out

There are 12 3000psi fills in teh tank

However as Tom Pointed out, as you decant from teh larger into teh smaller, you will lose pressure, but you should certainly be able to get 7 useful fills out of it.

1st Fill 3000psi
2nd 2750psi
3rd 2472psi
4th 2250psi
5th 2000psi
6th 1752psi

Etc..roughly.

For a 300 bar tank, just times those figures by 1.5

Mind yu..thinking bout it, ive used teh 180l of air as a constant, whereas...im pretty sure...you wouldnt get teh full 180l as that is worked on 1bar (14.5psi) being normal Atmospheric pressure...dunno
Anyway, those figures are about right