BOC diving grade O2

[pollardive]

first diving grade in southern ireland maybe......

[emmbee]

Sounds great

Cheers,

Matthieu

[gadget]

matthieu
 if you need any fills just give us a shout
 

[Fintan Lowney]

Hi,
What is the pressure in these cylinders?

regards,
Fintan.

[gadget]

hi fintan
filled to 230 bar  @ 15 c
mine had 226 bar

[Stewart Andrews]

IF you have access to a booster, it is expensive per litre.
For 1.6 times the gas you pay 2.5 times the price. I'm sticking with Medical.
Assuming that you have an agent nearby and can collect yourself.

Stewie

[Sidemount Ninja]

Medical per litre is the cheapest (safest  ) but the cost of the boosters plus compressor (or cylinder) to drive it is a touch on the expensive side of life. Thats my dilemma now. Take the hit for a booster combo and save 30 euro per J or save the 4K and pay the extra for the 230 bar over 130. I guess a booster is almost essential when using helium but I'm not there yet  (Artur.. )

[tonyf]

With a mini booster i give med 02 back with 30 bar.  As most of the time the fills are 120, I get 90 bar usable gas.

With 220 bar DG I get 190 usable gas.  This is over twice the gas.  I also save on a 40km trip , time and petrol,  and drive gas for booster.  So all in all should work out the same or cheaper for me.

Will let you know as only getting the DG on thurs

[gadget]

aaron just wondering why you think that the medical grade would be safer than the diving grade
i am also not there yet. so at the moment this make sense for me .
ps is a booster really 4k if so its way down the list

[Sidemount Ninja]

Sorry Graham, I meant in relation to industrial grade O2. The O2 plus the cylinder handling protocols are the same for medical and diving grade so the only difference is the 130 v 230 bar.  Those mini boosters are at least a grand unless you are lucky enough to find a good second hand one. Boosters that can suck a J to a few bar are double that. They work off a 8-10(ish-I believe) bar inlet feed so a compressor or a cylinder of air is required to power them. Compressor is at least another 2 grand so you see where I am going with the figures. I figure there would not be much of a saving getting a booster and then paying for multiple air fills to power it, only to save 10 euro's of O2 in a J.
That said, does anyone know roughly how far a 12 litre 232 will boost, how many fills required to drain a J (say a 130 bar boosting to 230 into AL80)??

[Turbo]

Just wondering Aaron(I may be completely wrong here) but if a mini booster only requires 8-10 bar to operate surely one of those air compressors used for painting etc. could be used to power it at home.

Cathal

[tonyf]

Its not just pressure its air flow , you need 7cfm plus.  I use a stanley which I have adapted to giver higher pressure,  (cost about 300) euro to run mine.  Its a bit slower but works fine to about 80 bar supply.  I often boost to about 150 bar than used a cylinder to top up.


Tony