Oxy-Acetylene tank sizes

WTL - 390 FT³ - 12.5" outside diameter - 44-3/8" tall
WK - 304 FT³ - 12-7/8" outside diameter - 42" tall
WSL - 130 FT³ - 8.5" outside diameter - 33.5" tall
WS - 130 FT³ - 8.5" outside diameter - 35.5" tall
WC - 111 FT³ - 8.5" outside diameter - 37.5" tall
WQ - 60 FT³ - 7-5/8" outside diameter - 24-1/4" tall
B - 40 FT³ - 6-1/4" outside diameter - 23" tall
MC - 10 FT³ - 4" outside diameter - 14" tall

Again, the height includes the cylinder cap.

The R oxy and MC acet are common sizes for the portable torch sets.

The B Acet is common in the plumbing trades for air/acet soldering of copper joints.

If you do a lot of cutting, you want a larger oxy cyl. I haven't measured mine but I think they are the WS acet and K oxy.

Rod

Also, is there a list of nominal pressures when full?

I don't have any listing of a C or C25 cylinder size designation. Are you talking about Carbon Dioxide and 75/25 Argon/Carbon Dioxide mix commonly used in MIG welding? That would be a gas designation rather than a cylinder size designation. These gases would both be in the high pressure cylinder category. They would commonly be supplied in T size high pressure cylinders, as is oxygen. That would be 9-1/4" O.D. x 60" high. This info is from an old (early '80s) Linde (Union Carbide) catalog. Other suppliers may provide these gases in any of the cylinder sizes listed under my post on oxygen cylinders. The cylinder of 75/25 that I have is a T, however the growth of relatively small MIG welders in recent years may have led to supply of these gases in cylinders smaller than the T. Check with a local supplier for availability.

The standard full pressure for any of the high pressure gases in a T size cylinder is 2,640 psig. For all the other HP cylinder sizes, the full pressure is 2,200 psig for any gas...with the exception of hydrogen and hydrogen mixtures which is 2,000 psig. These pressures are at a temperature of 70 deg F. That pressure will increase over 70 deg and decrease under 70 deg for the same quantity of contents.

By contrast, all the acetylene cylinders have a full pressure of 250 psig, also at 70 deg F.

Hope this answers your question,
Rod

Here are the standard oxygen cylinder sizes:

T - 330 FT³ - 9.25" outside diameter - 60" tall
K or KL - 244 FT³ - 9.00" outside diameter - 56" tall
LK - 244 FT³ - 8-15/16" outside diameter - 56" tall
D - 122 FT³ - 7.5" outside diameter - 48" tall
E or Y - 122 FT³ - 7.0" outside diameter - 48" tall
Q - 80 FT³ - 7.125" outside diameter - 35" tall
XL - 70 FT³ - 6" outside diameter - 41" tall
S - 150 FT³ - 7-3/8" outside diameter - 51" tall
R - 20 FT³ - 5-3/16" outside diameter - 19" tall

The height includes the cylinder cap

Rod

Something else to watch for at current gas prices is you get a full bottle. I just got screwd again in 10yrs on oxygen.

My gas supplier in 1990 ask my opinion of how he was setting up his cylinder transfer system. What he was doing is buying bulk HE, Co2 and AR and mixing his own welding gas cheaper than his wholesaler could supply it. He then ran the bulk tanks into a manifold to fill his empty cylinders either as a mixed gas or straight gas. His supplier caught on and made him stop or the supplier would chop off his gas supply.

We being the dummy I am, I forgot all about him filling his own cylinders, so Friday I go get a cylinder of O2. His wife does the books and gave me a "special" price of $25 for a 244cft cyl of O2.

I didn't think anything about it until I got home and hooked up the cyl to the gauge. It showed 1700psi and a normal full cyl is 2100 to 2200psi. So what he is doing is drawing off of several full cylinders to make one free profit cylinder at 1700psi. That increases his over all gas profit by 22% with a free cylinder every 4 cylinders.

Next time it's time to find a new gas supplier!

T_Bone

Rod

Yes that is true but our average tempature is about 70*f this time of the year. I could also be hyper sensitive to my suppliers product as I've seen his refilling manifold. But the gauge don't lie :)

My B-I-L works for NCG in Denver and every winter they get near full Acetylene cylinders in as empty cyl. as the cold causes a near empty pressure drop in winter.

T_Bone

I doubt if you could get a gas supplier to refill the cyl. If they do FE they might do an exchange with you for a fee.

T_Bone