Quote: (Originally Posted by
Mark Chase)

I have a booster and I can say it will fill a 3ltr to 250 bar in a frighteningly short time on full power, but only if the feed tank has a good fill. Once the feed tank drops below 100 bar it takes much longer. Once it drops to 50bar it can take a whole 11ltr of air to boost my 3ltr to about 200 bar max. Often it doesn't even make the 200.
The pressure in the drive tank doesn't seem to be relevant. It pumps well right up until the dive tank is exhausted. The rate of fill seems to be totally dependent on the feed tank pressure.
ATB
Mark Chase
Hi mark,
so it is then same then me with my frau drager
I wonder why I alway attemp to fill my tanks up to 150 or 180 bars....I alway come back to the surface with 100 bars and always pump and pump....
I should fill the tanks up to 120 bars not more for a single dive.
On a one hour dive I use around 1bar/minute, (including prebreathing and o2 fushes) so it means 60 bars, I don't know why the hell I pump up to 180 bars !!!
regards
jean mi