New 40 cuft Steel Nitrogen Cylinder

Yes, a 40 cu ft nitrogen tank is a common choice for HVAC work such as pressure-testing and purging refrigerant lines. Its compact 20 inch height makes it easy to carry to a rooftop or mechanical room, and dry nitrogen will not introduce moisture into the system. Pair it with a CGA580 nitrogen regulator rated for your test pressure.

No, the cylinder ships on its own, so you will need a separate CGA580 nitrogen regulator and flowmeter to use it. For HVAC pressure testing, choose a high-pressure nitrogen regulator that reaches your required test PSI; for welding, a flowmeter-style regulator is typical. The CGA580 outlet is standard, so most nitrogen regulators thread straight on.

A 40 cu ft steel nitrogen tank stands about 20 inches tall, or roughly 22 inches with the valve, and 7 inches in diameter. At an empty weight near 28 pounds, it is light enough to carry by hand and fits in a service van or under a bench. This makes it one of the more portable owned nitrogen cylinder sizes.

Owned nitrogen cylinders range from small 20 cu ft bottles up through 40 cu ft, 80 cu ft, and larger 300 cu ft sizes. At 40 cu ft, this tank suits intermittent jobs like HVAC testing, brazing purge, or occasional welding without the bulk of a large cylinder. Steady, high-volume users often step up to 80 cu ft or more to reduce refills.

Yes, dry nitrogen from this cylinder works well for purging lines during brazing and for high-quality tire inflation. Nitrogen displaces oxygen and moisture, which helps produce clean brazed joints and stable tire pressure. Use a regulator suited to the pressure each task requires.

Yes, “nitrogen tank” and “nitrogen cylinder” are used interchangeably for a steel bottle that stores compressed nitrogen. This 40 cu ft nitrogen cylinder holds dry nitrogen at high pressure for HVAC, brazing, and industrial use. Whichever term your supplier uses, the CGA580 connection is the same.

Run time depends on the task and flow: a quick HVAC pressure test uses very little, while continuous purging or welding draws it down faster. For intermittent service work, a 40 cu ft tank can cover many jobs between refills. Watch your regulator gauge and refill before it drops near empty.

You own this cylinder outright once purchased, with no rental contract or recurring fees. Ownership lets you refill or exchange it at any qualified gas supplier and avoids the ongoing costs of a supplier rental bottle. Keep your purchase and hydro-test records to prove ownership at exchange.

Any welding or industrial gas supplier that carries nitrogen can refill this CGA580 cylinder, and refill cost varies by region and purity. Because you own the tank, you can compare prices between suppliers rather than paying rental plus fill. Ask for the dry nitrogen grade your HVAC or brazing work requires.

No, all cylinders ship empty for transport safety, so this tank must be filled before use. Take it to a gas supplier that can provide nitrogen and fill to the marked service pressure. Once filled and fitted with a CGA580 regulator, it is ready for HVAC testing, brazing, or welding.