By Caleb MorganUpdated November 2026
Choosing a nitrogen tank for kegerator use is less about brand loyalty and more about matching cylinder size, valve fitting and pressure rating to how you actually pour. This list compares six nitrogen cylinders sold on Amazon US, based on manufacturer specifications, brand reputation and the patterns owners tend to mention in feedback. Selection criteria were cylinder capacity, valve compatibility (CGA-580 for nitrogen is the standard you will see), DOT markings, whether the cylinder ships empty, and how well each size suits a home bar, a nitro stout setup or a commercial-style draft station.
Our top picks at a glance
- 1
TOP CHOICEBest overallKegco 22 Cu. Ft. Nitrogen Air Tank – High Pressure Aluminum Gas CylinderView on Amazon - 2
TOP CHOICEBest for small kitchensKegco 15 Cu. Ft. Nitrogen Air Tank with Sleek Black Epoxy FinishView on Amazon - 3
TOP CHOICEBest budget pickVEVOR 20 Cu. Ft DOT Nitrogen Cylinder Aluminum Alloy Air TankView on Amazon - 4
Best for heavy pouringKegco 33 Cu. Ft. Nitrogen Air Tank – Aluminum Gas CylinderView on Amazon - 5
Best for long runs between fillsDOT-3AA Approved High-Strength Alloy Steel Inert Gas Tank 40 Cubic FootView on Amazon - 6
Best small-capacity backupDOT-3AL Approved Aluminum Gas Cylinder for Kegerators 5lbView on Amazon
Our Top Picks
| Product | Best for | Key feature |
|---|---|---|
| Kegco 22 Cu. Ft. Nitrogen Air Tank | Most home bars | Balanced capacity and portability |
| Kegco 15 Cu. Ft. Nitrogen Air Tank | Small kitchens | Compact footprint with epoxy finish |
| VEVOR 20 Cu. Ft Nitrogen Cylinder | Budget-minded buyers | Aluminum alloy with CGA-580 valve |
| Kegco 33 Cu. Ft. Nitrogen Air Tank | Heavy pouring | Large capacity for frequent use |
| 40 Cubic Foot DOT Approved Steel Nitrogen Cylinder | Long runs between fills | Steel construction, CGA580 valve |
| 5lb DOT Approved Aluminum CO2 Tank with CGA320 Valve | Backup or light use | Small, light, DOT-3AL rated |
Kegco 22 Cu. Ft. Nitrogen Air Tank – High Pressure Aluminum Gas Cylinder
Kegco 22 Cu. Ft. Nitrogen Air Tank – High Pressure Aluminum Gas Cylinder (empty)
Best for: Home bars that pour regularly and want one tank that lasts several weeks between fills.
This is a good middle-of-the-road cylinder for a kegerator running a nitro tap or a stout faucet. It is large enough that you are not refilling every few days, but not so big that it dominates a garage or basement shelf.
Key specs
- Capacity: 22 cubic feet (per listing)
- Material: aluminum high-pressure cylinder
- Gas: nitrogen
Pros
- Good balance of capacity and footprint
- Brand is widely associated with kegerator equipment
- Works well for regular weekend pouring
Cons
- Heavier to move than smaller cylinders
- Still needs a regulator sized for nitrogen
Bottom line: The safest all-round pick for a typical home kegerator with one or two taps.
Kegco 15 Cu. Ft. Nitrogen Air Tank with Sleek Black Epoxy Finish
Kegco 15 Cu. Ft. Nitrogen Air Tank with Sleek Black Epoxy Finish (Empty)
Best for: Small kitchens and apartment bars where floor space is tight.
The smaller 15 cubic foot size fits under a counter or beside a compact kegerator. Owners who keep a single keg on tap usually find this capacity lasts a reasonable stretch before a refill.
Key specs
- Capacity: 15 cubic feet (per listing)
- Finish: black epoxy
- Gas: nitrogen
Pros
- Compact and easier to store
- Epoxy finish resists scuffs in a garage setting
- Lighter than the larger Kegco cylinders
Cons
- Runs out sooner with frequent pours
- Less suitable for multi-tap nitro setups
Bottom line: Pick this if space matters more than running time and you pour a few times a week.
VEVOR 20 Cu. Ft DOT Nitrogen Cylinder Aluminum Alloy Air Tank
High-Strength Aluminum Alloy 6061-T6 Cylinder with CGA-580 Valve & Handle, for Manufacturing, Welding, Beverage Production VEVOR 20 Cu. Ft DOT Nitrogen Cylinder Aluminum Alloy Air Tank (Ships Empty)
Best for: Buyers who want a DOT-rated aluminum cylinder at a budget-friendly tier.
VEVOR is a multi-category equipment brand, and this listing is aimed at users who need a nitrogen cylinder for beverage dispensing as well as general gas work. It ships empty and uses the CGA-580 valve used for nitrogen.
Key specs
- Capacity: 20 cubic feet (per listing)
- Material: aluminum alloy 6061-T6 (per listing)
- Valve: CGA-580 with handle (per listing)
Pros
- Strong value for a DOT-rated aluminum cylinder
- CGA-580 valve matches standard nitrogen regulators
- Shipped empty, so you can fill it locally
Cons
- Brand is less established in kegerator-specific forums than Kegco
- Fill logistics depend on a local gas supplier
Bottom line: A sensible choice if you want a generic-capacity cylinder and already have a local nitrogen fill source.
Kegco 33 Cu. Ft. Nitrogen Air Tank – Aluminum Gas Cylinder
Kegco 33 Cu. Ft. Nitrogen Air Tank – Aluminum Gas Cylinder (empty)
Best for: Heavy home pouring, parties and bars with multiple nitro lines.
At 33 cubic feet this is the largest Kegco option in this list. It suits people who host often and do not want to plan refills around every event.
Key specs
- Capacity: 33 cubic feet (per listing)
- Material: aluminum
- Gas: nitrogen
Pros
- Long run time between refills
- Good for multi-tap nitro setups
- Consistent with the rest of the Kegco line
Cons
- Heavy and bulky to move
- Overkill for one keg on a light schedule
Bottom line: Choose this when refills are the bottleneck and you can give the cylinder a permanent spot.
DOT-3AA Approved High-Strength Alloy Steel Inert Gas Tank 40 Cubic Foot
DOT-3AA Approved, High-Strength Alloy Steel Inert Gas Tank for Manufacturing, Welding, Fresh Production Date 40 Cubic Foot DOT Approved Steel Nitrogen Cylinder with CGA580 Valve(Empty)
Best for: Users who want the longest possible time between fills and do not mind steel weight.
This 40 cubic foot steel cylinder is built for heavier duty than most aluminum options. It is commonly used in welding and manufacturing, and owners on home brewing forums sometimes adopt it for large nitro systems.
Key specs
- Capacity: 40 cubic feet (per listing)
- Material: high-strength alloy steel, DOT-3AA (per listing)
- Valve: CGA580 (per listing)
Pros
- Largest capacity in this list
- Steel construction suits demanding use
- DOT-3AA rating is a recognized cylinder standard
Cons
- Very heavy and hard to move without a hand truck
- Needs a secure mounting point and careful handling
Bottom line: Best for a fixed installation in a garage or bar room where weight is not an issue.
DOT-3AL Approved Aluminum Gas Cylinder for Kegerators 5lb
DOT-3AL Approved, High-Strength Aluminum Alloy Gas Cylinder for Kegerators, Fresh Production Date, Glossy Varnish Finish New 5lb DOT Approved Aluminum CO2 Tank with CGA320 Valve(Empety)
Best for: A small backup cylinder or a light-use kegerator.
The 5 lb size is far smaller than the others here. It makes sense as a spare or for occasional pours, not as the primary nitrogen source for a busy tap.
Key specs
- Size: 5 lb (per listing)
- Material: aluminum, DOT-3AL (per listing)
- Valve: CGA320 (per listing)
Pros
- Light and easy to carry
- Good as a spare cylinder
- Fits tight storage spaces
Cons
- Short run time for regular use
- CGA320 valve is the CO2 fitting, so check your regulator carefully before connecting
Bottom line: Keep this as a backup or for light use, but double-check the valve fitting before you buy.
Buying Guide
Cylinder capacity and run time
Capacity is measured in cubic feet of gas at standard conditions. A larger cylinder means fewer refills, but also more weight and more floor space. For a single-tap home kegerator, a mid-size cylinder usually covers several weeks of normal pouring. Heavy users or parties should look at the upper end of the range.
Good picks for this: Kegco 22 Cu. Ft. Nitrogen Air Tank, Kegco 33 Cu. Ft. Nitrogen Air Tank
Valve fitting: CGA-580 vs CGA-320
Nitrogen cylinders for draft beer normally use a CGA-580 valve. CGA-320 is the fitting used on CO2 cylinders. Connecting the wrong regulator is a common mistake and can be dangerous. Confirm the valve on the listing matches the regulator you own before you buy.
Good picks for this: VEVOR 20 Cu. Ft DOT Nitrogen Cylinder, DOT-3AA Approved Steel Nitrogen Cylinder
Size and fit in your space
Measure the floor area and the clearance around the cylinder before you commit. Cylinders need upright storage, a secure strap or bracket, and room for the regulator and hose. A garage corner or a shelf beside the kegerator works well for most sizes.
Good picks for this: Kegco 15 Cu. Ft. Nitrogen Air Tank with Sleek Black Epoxy Finish
Material: aluminum vs steel
Aluminum cylinders are lighter and easier to move. Steel cylinders are heavier but are often chosen for larger capacities and demanding use. Neither is automatically better; weight and mounting are the real trade-offs.
Good picks for this: Kegco 33 Cu. Ft. Nitrogen Air Tank, DOT-3AA Approved Steel Nitrogen Cylinder
DOT markings and cylinder standards
Look for DOT markings such as DOT-3AA or DOT-3AL on the listing. These indicate the cylinder meets US Department of Transportation specifications for high-pressure gas containers. Never use a cylinder without clear markings, and do not modify or repaint a cylinder yourself.
Good picks for this: DOT-3AL Approved Aluminum Gas Cylinder for Kegerators 5lb, VEVOR 20 Cu. Ft DOT Nitrogen Cylinder
Use case: nitro stout vs standard draft
A nitro stout system uses a mix that is usually 75 percent nitrogen and 25 percent CO2 through a stout faucet, while many standard draft setups use only CO2. If you run pure nitrogen for a dedicated nitro line, you need a cylinder and regulator set up for that use. Check your beer style and dispensing plan first.
Good picks for this: Kegco 22 Cu. Ft. Nitrogen Air Tank, Kegco 15 Cu. Ft. Nitrogen Air Tank
Durability and care
Store cylinders upright, out of direct sun and away from heat sources. Keep the valve capped when not in use and inspect the regulator and hose for cracks or leaks. Retest and recertification schedules are set by the cylinder standard and should be followed.
Good picks for this: DOT-3AA Approved Steel Nitrogen Cylinder, Kegco 22 Cu. Ft. Nitrogen Air Tank
FAQ
What size nitrogen tank do I need for a kegerator?
For one tap and occasional pouring, a mid-size cylinder such as 15 to 22 cubic feet is common. Frequent pouring or multiple nitro lines points toward the larger sizes.
Can I use a CO2 tank for nitrogen?
No. CO2 and nitrogen cylinders use different valve fittings and different gases. Using the wrong regulator or gas creates safety risks and will not dispense correctly. Always match the cylinder to the gas your regulator is built for.
What is a CGA-580 valve?
CGA-580 is the standard valve fitting for nitrogen cylinders used in beverage dispensing. Confirm your regulator uses this fitting before you connect anything.
Do nitrogen cylinders ship empty?
Several listings in this category ship empty, so you will need to fill them at a local gas supplier. Check the listing and ask the supplier about fill requirements.
How long does a nitrogen tank last on a kegerator?
Run time depends on cylinder size, how much you pour, your system’s pressure settings and leaks. Owners usually find that tracking gauge readings over a few weeks gives a reliable estimate for their own setup.
Is it safe to store a nitrogen cylinder in a garage?
Garages are common, but cylinders should be secured upright, kept away from heat and ignition sources, and protected from impact. If you are unsure about storage or handling, consult a qualified gas supplier or safety professional.
Conclusion
For most home bars, the Kegco 22 Cu. Ft. Nitrogen Air Tank offers a sensible balance of capacity and manageability. Small kitchens do better with the 15 cubic foot Kegco model. Buyers who want a budget-tier aluminum cylinder and already have a local fill source may consider the VEVOR 20 Cu. Ft option. Heavy pourers and parties point to the 33 or 40 cubic foot cylinders, while the 5 lb DOT-3AL unit works best as a spare. Confirm the valve fitting, DOT markings and your regulator before you buy, and consult a qualified gas professional if you are unsure about setup or safety.
Sources
- Workplace guidance on compressed gas cylinder storage and handling (osha.gov)
- Federal hazardous materials and cylinder regulations, including DOT cylinder markings (phmsa.dot.gov)
- Compressed Gas Association standards for cylinder valve connections such as CGA-580 and CGA-320
Related reading
- Top 7 CO2 Regulators for Kegerator Options Compared for Home Brewers
- Kegerator and Refrigerator Combo: How to Build One That Works
- Kegerator Guinness Conversion Kit: 7 Best Picks Compared (2026)
About Caleb Morgan
Caleb Morgan is part of our editorial team and reviews and edits our home brewing guides, checking product details against manufacturer specifications and owner feedback.
