If you are searching for a “33 gallon propane tank,” note that the products here are mainly 33.5-pound forklift cylinders, not 33-gallon tanks. The listed aluminum forklift cylinder specifies a 7.4-gallon capacity. For forklift use, the Flame King aluminum model is a lighter-weight option, while the steel Flame King is a rugged alternative. For grills and outdoor activities, the 30-pound cylinders are more relevant.
| Product | Best For | Key Difference |
|---|---|---|
| Flame King YSN335 Steel | Forklift use | Steel construction and liquid draw |
| Flame King Aluminum 33.5 lb | Reducing cylinder weight | Aluminum construction and built-in gauge |
| Flame King YSN330 30 lb | Grills and outdoor activities | OPD valve and gauge |
| Flame King YSN-301 30 lb | General-purpose refillable use | OPD valve and stated testing |
| 33.5 lb Aluminum Quick-Fill Cylinder | Forklifts needing quick refills | Quick-fill valve and stated 7.4-gallon capacity |
Flame King YSN335 Steel Forklift Tank

This 33.5-pound cylinder is best for buyers who need a forklift-specific tank and prefer steel construction. Its liquid-draw design is intended for forklift applications, and the tank can be mounted horizontally or vertically. A built-in gauge helps monitor the fuel level.
The welded-steel body has a powder-coated finish described as rust- and corrosion-resistant. It arrives empty, pre-purged, and ready to be filled. Choose this model if a steel forklift cylinder and flexible mounting orientation suit your equipment. Avoid assuming it is a standard grill cylinder: its liquid-draw design is for forklift use.
Flame King 33.5-Pound Aluminum Forklift Tank

This model is best for forklift operators who want an aluminum cylinder rather than steel. It uses a liquid-draw design, includes a built-in gauge, and can be mounted horizontally or vertically. The product description says aluminum is lighter than steel, which may make handling and delivery easier.
The tank is powder-coated and described as corrosion-resistant. It is pre-purged and vacuum-ready for filling; the listing also states that it is X-ray and hydrostatic tested and DOT and Transport Canada compliant. Choose it when lower cylinder weight is a priority. Confirm that its forklift-specific connection and setup match your equipment before purchase.
Flame King YSN330 30-Pound Cylinder

This 30-pound steel tank is best for buyers seeking a cylinder for grills, barbecues, camping, fishing, or other outdoor activities. It includes a built-in gas gauge and an overfill prevention device (OPD) valve. Its welded-steel construction has a powder-coated finish intended to help prevent rust.
The cylinder arrives empty and pre-purged for filling. Choose this model when a gauge and OPD valve matter for an outdoor-use tank. Its stated 30-pound capacity is not the same as a 33-gallon tank, and its listed purpose differs from the liquid-draw forklift cylinders.
Flame King YSN-301 30-Pound Steel Tank

This tank is best for buyers who want a 30-pound steel cylinder with an OPD valve and documented testing in the product description. It is made from welded steel with a powder-coated finish, arrives empty, and is pre-purged and vacuum-ready for propane filling.
The listing says the cylinder is X-ray and hydrostatic tested and DOT and Transport Canada compliant. Choose it if those stated features fit your purchase requirements. Unlike the YSN330, the supplied product details do not specify a built-in gauge, so avoid choosing this model if a gauge is essential.
33.5-Pound Aluminum Quick-Fill Forklift Cylinder

This option is best for industrial buyers who prioritize a quick-fill valve and a stated 7.4-gallon capacity. The listing describes a 33.5-pound forklift cylinder measuring 13 inches in diameter and 29 inches high, with a 24-pound tare weight. It has a built-in gauge, carry handles, and a foot ring.
The aluminum construction is described as lightweight and corrosion-resistant, and the listing states that the cylinder can be filled in horizontal or vertical positions. It also identifies a DOT-4BA-240 stamp. Choose it if the quick-fill setup suits your refill process. Confirm connection requirements with your equipment and filling provider.
Buying Guide: How To Choose The Right Propane Cylinder
Does “33 gallon” mean a 33.5-pound tank?
No. Gallons measure volume, while pounds describe propane weight or a cylinder’s capacity designation. These listings do not provide a 33-gallon tank. One forklift listing specifically gives a 7.4-gallon capacity; the others describe 33.5-pound or 30-pound cylinders. Check the tank’s stated capacity and dimensions rather than relying on a shorthand search phrase.
Should you choose steel or aluminum?
Steel models may suit buyers looking for a welded-steel cylinder, such as the Flame King YSN335 forklift tank or the 30-pound outdoor-use options. Aluminum models are described as lighter than steel, which can help buyers focused on handling weight. Compare the cylinder’s tare weight, use case, and equipment requirements before deciding.
Is the tank for a forklift or outdoor appliances?
Forklift cylinders in this list use liquid-draw designs and are identified for forklift applications. The 30-pound YSN330 is listed for grills, barbecues, camping, fishing, and outdoor activities. Do not treat these use cases as interchangeable; confirm the cylinder type and connection required by the appliance or vehicle.
Which features should you check before ordering?
Compare capacity, material, mounting orientation, valve type, gauge, dimensions, and refill method. A built-in gauge is specified on several models, while the YSN-301 details do not mention one. The quick-fill cylinder is the only listing that specifically highlights a quick-fill valve. Also check that your local filling provider can service the cylinder.
Frequently Asked Questions
Is a 33.5-pound propane cylinder a 33-gallon tank?
No. A 33.5-pound designation is not a gallon measurement. The listed quick-fill forklift cylinder specifies a 7.4-gallon capacity.
Which listed cylinder is designed for forklifts?
The Flame King YSN335 steel tank and both 33.5-pound aluminum cylinders are described for forklift applications and feature liquid-draw designs.
Which option is listed for grills and camping?
The Flame King YSN330 30-pound cylinder is specifically listed for grills, barbecues, camping, fishing, and outdoor activities.
Do these tanks arrive filled with propane?
No. The product details identify the tanks as empty. Some are described as pre-purged or vacuum-ready for filling.
Why choose a cylinder with an OPD valve?
An OPD valve is designed to help prevent overfilling. The YSN330 and YSN-301 listings specify this valve.