Can you help me decipher these markings?

[Zeke XA3]

Hey folks im trying to write up some info for the company i work for and need to figure out what all the markings mean on the 5 types of tanks we have on board!

Tank 1 up first

0.750 - 14 GC6 - 78453/04 LAB143B
DOT - 3AL3000 P154747 M4141 08A12 LUXFER
WC11.1KG TW14.2KG WP20.7MPA - AT15C TP 34.5MPA

From what little i know, DOT is a standard? 3AL3000 is the alloy? Luxfer manufacturer
We call this either a 12l or 75cf tank but not sure what its actual volume is by the WC or TW values, WP working pressure? TP @ 15C? and no nothing or the first line?

Thanks in advance.

Zeke

 

[mala]

I would call that an aly 80

11.1 ltr capacity
working pressure 207 bar
test pressure 345 bar

 

[herman]

0.750-14 = thread specs of the tank valve
DOT= US department of transportation
3AL3000 = Aluminum tank with a working pressure of 3000 psi (the rest of the letters/numbers are serial and model number) and Luxfer is the manuf
08A12 = manufacture date and original hydro facility 08= August A=is not an "A" but is the hydro facility's ID stamp, 12= 2012
tw 14.2= tare weight (empty weight) 14.2 kg
wp20.7 MPA = working pressure of 20.7 megapascals (3003 psi/ 207 bar) @ a temp of 15C
TP 34.5 MPA= test pressure of 34.5 megapascals (5003 psi/3450 bar)

In simple diver terms, you have an aluminum 80 made by Luxfer in August of 2012 with a rated pressure of 3000 psi that uses standard 3/4 inch valves.

 

[halocline]

That's the most complete and to-the-point deciphering of tank markings I've seen. It holds 77cuft at 3000 PSI.

 

[Zeke XA3]

0.750-14 = thread specs of the tank valve
DOT= US department of transportation
3AL3000 = Aluminum tank with a working pressure of 3000 psi (the rest of the letters/numbers are serial and model number) and Luxfer is the manuf
08A12 = manufacture date and original hydro facility 08= August A=is not an "A" but is the hydro facility's ID stamp, 12= 2012
tw 14.2= tare weight (empty weight) 14.2 kg
wp20.7 MPA = working pressure of 20.7 megapascals (3003 psi/ 207 bar) @ a temp of 15C
TP 34.5 MPA= test pressure of 34.5 megapascals (5003 psi/3450 bar)

In simple diver terms, you have an aluminum 80 made by Luxfer in August of 2012 with a rated pressure of 3000 psi that uses standard 3/4 inch valves.

Thanks mate, i should be able to decipher all our tanks now!

But why do you and Mala call it an 80 and halocline call it a 77?

WC is ?? Wet capacity so, volume? so 11.1 KG of fresh water so 11.1l of air?

 

[herman]

yea WC= actual volume measured by water capacity....which makes this a 11L tank
The actual capacity of the tank at rated pressure is 77cf but for whatever (marketing??) reasons its called an 80.....

 

[Luis H]

The actual internal volume of this particular tank is stamped at 11.1 kg of water, therefore the volume is 11.1 liters or 0.392 cubic feet.

The pressure is 20.7 Mpa = 3002 psi = 204 Atm

The volume of available air in imperial units is 0.392 cu ft x 204 Atm = 79.97 cu ft.

Therefore, this cylinder seems to be an actual 80 cu ft versus many that are advertised as 80, but are normally accepted as having about 77 cu ft.

 

[Scared Silly]

Let me add a couple of additional bit that have not been covered.

LAB143B - is a gas cylinder registry number for New Zealand (obviously for Luxfer)
M4141 - is a world wide manufacturer number.

78453/04 - ??? This may be a New Zealand agency spec. I am not sure

 

[Zeke XA3]

Thanks guys, i should be able to use that info now and if i run into any other unknowns ill be back!