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MrGillespie
11-11-2008, 03:28
Hi, coming from the metric side of the world I have a question that I hope that you can help me with.

I have a SS tank at 12 litres and a filling pressure to 232 bar, what do you call it?
I would be most thankful to know because it would help me to use some lift calculation spreads.

/J

navyhmc
11-11-2008, 04:30
That tank would be a 98 cubic foot tank at 3365 psi.

The calculations are fairly easy:
12 litres at 232 Bar =2784 liters
1 litre is 0.035314 cubit feet so 0.035314 * 2874 = 98.3158 cubic feet

1bar = 14.50377 psi.
so 232 bar is 3364.87464 psi or about 3365 psi

Hope this helps


ETA: Who makes your cylinder? It might be easy enough to find their specification on thier web site. That's where I have gotten all the specifications for my tanks/cylinders.

MrGillespie
11-11-2008, 04:54
Many thanks

It's made by Faber. One more, you often write LP or HP and I think I have seen other prefixes also. What does it stand for, it helps to know when following discussions.

/J

cmburch
11-11-2008, 05:12
From navyhmc's description, I think it may be an HP100.

HP high pressure - greater than 3000 psi?

LP low pressure

Link with info
Dive Rite Express -- How to Select a SCUBA Tank (http://www.diveriteexpress.com/library/tanks.shtml)

MrGillespie
11-11-2008, 05:14
Great, thanks

oddbod
11-11-2008, 05:39
Hi, coming from the metric side of the world I have a question that I hope that you can help me with.

I have a SS tank at 12 litres and a filling pressure to 232 bar, what do you call it?


/J

A BIG tank

MrGillespie
11-11-2008, 05:41
:smiley36:

MrGillespie
11-11-2008, 05:46
I am shopping for a W/BP for this tank and is using a 5.5+5.5 semidry. Do you guys have any suggestions in size. I think it will be an Oxyteq MachV (probably extreme due to the great price on ST) but I have not made up my mind if it will be 30 or 40 lbs

cmburch
11-11-2008, 05:52
We consider it the norm in size for HP steel tanks.

Compared to an Al80. It has the same diameter, is a couple of inches shorter, similar in weight, higher capacity, and has better buoyancy characteristics.

You can do a search for Oxycheq Mach. I have the 40lb Mach V Extreme. Not much difference in profile between the 30 and 40. The 40 would be overkill for you though. I do not think it would be a hindrance though since that may be what is on special.

navyhmc
11-11-2008, 20:40
From navyhmc's description, I think it may be an HP100.

HP high pressure - greater than 3000 psi?

LP low pressure

Link with info
Dive Rite Express -- How to Select a SCUBA Tank (http://www.diveriteexpress.com/library/tanks.shtml)

Dead on...Faber 100:
Capacity: 100 cu ft, .
Diameter 7,25" dia (18.42 cm )
Length w/o valve: 24.01" (61 cm),
Empty weight w/valve: 38.7 (17.6 kg)
Bouyancy empty w/valve:: -7.26 (3.3 kg)
Bouyancy full w/valve:: -14.8 (6.7 kg)