250 Cubic Foot Tank

Yes, in common industrial use. “H tank” is a size nickname rather than an official designation, and it usually refers to a large high-pressure oxygen cylinder in this capacity class. If a supplier or a piece of equipment documentation asks for an H tank, this is the size normally meant. Confirm the CGA540 connection matches your regulator either way.

Empty weight for this specific cylinder is listed in the specifications on this page, and a full high-pressure oxygen bottle of this size is heavy enough that it should always be moved on a cylinder cart rather than carried. It is not a portable size. Anyone needing to move oxygen regularly should look at a smaller cylinder instead.

Oxygen cylinders are commonly sold in 20, 40, 60, 80, 125, 150, 250 and 300 cubic foot sizes. At 250 cu ft this is near the top of the range, chosen by fabrication shops and production users who would otherwise refill a smaller bottle constantly. Smaller sizes remain the better choice wherever the cylinder has to be carried.

It comes with a CGA540 valve, the standard connection for industrial oxygen in this pressure class. Any CGA540 oxygen regulator threads on directly. Never fit a regulator intended for fuel gas or an inert gas to an oxygen cylinder, and never use oil or grease on an oxygen connection.

Oxygen consumption in cutting is set by the torch tip size and cutting pressure, so a 250 cu ft bottle can run a long shift on light work or empty quickly on heavy plate. As a rule, oxygen is consumed several times faster than acetylene on the same job, which is why oxygen bottles in a cutting set are usually the larger of the pair. Match the bottle to the tip you actually run.

This is an industrial oxygen cylinder for welding, cutting and industrial use. Medical oxygen is prescription-controlled and supplied through different channels with different cylinder and valve requirements. Do not use an industrial cylinder for any medical or breathing purpose.

No. All cylinders ship empty for transport safety and must be filled before use. Take it to a qualified gas supplier who will fill it to the marked service pressure. Oxygen is filled only by suppliers equipped for oxygen service.

You own it outright, with no lease and no ongoing rental charges. That lets you refill or exchange at any qualified supplier rather than being tied to one vendor. For a bottle this size, owning usually beats renting on cost within a fairly short period of regular use.

Yes, provided they handle oxygen and the cylinder is within its requalification date. The CGA540 connection is standard, so this is a routine fill for any welding gas supplier. They will check the collar stamp before filling.

For oxy-fuel cutting it is normally paired with an acetylene cylinder, with the oxygen bottle sized larger because oxygen is consumed faster. You will also need a CGA540 oxygen regulator, a fuel-gas regulator for the other bottle, and hoses and a torch rated for the work. Flashback arrestors are strongly recommended on both lines.

Store and use it upright, chained or strapped to a wall, bench or cart so it cannot fall. Keep the valve cap on whenever a regulator is not fitted, since a broken valve on a high-pressure cylinder is extremely dangerous. Store oxygen separated from fuel gases where local rules require it.

It is requalified on a set DOT interval, with the last test date stamped into the collar. Suppliers check that date at every fill and will refuse an out-of-date cylinder. A new cylinder starts fresh, so the next requalification is years out.

No. A cylinder in oxygen service with a CGA540 valve should stay in oxygen service. Changing a cylinder’s gas service requires cleaning and valve changes by a qualified facility, and oxygen service in particular demands hydrocarbon-free preparation.

The 300 cu ft holds more gas and is correspondingly taller and heavier; the 250 cu ft is the more common shop size and easier to place. Both use the same CGA540 connection, so a regulator moves between them. Choose on refill frequency and on the space and handling equipment available.