A 30 lb LP tank is a refillable propane cylinder for buyers who need more capacity than a standard grill-size tank. The Flame King YSN330 is best for checking fuel levels at a glance, while the YSN-301 is a straightforward vertical option. For low-profile installations, choose the horizontal YSN301HZL. The list also includes a 40 lb tank as a larger-capacity alternative, not as a 30 lb match.
| Product | Best For | Standout Feature |
|---|---|---|
| Flame King YSN330 | Checking propane levels | Built-in gauge |
| Flame King YSN-301 | General vertical use | OPD valve and tested construction |
| Flame King YSN-301 White | Buyers seeking the white listing | Pre-purged, refill-ready cylinder |
| Flame King YSN301HZL | Horizontal setups | Low-profile design and gauge |
| Flame King YSN401 40 lb | Those needing more capacity | Larger capacity than 30 lb |
Flame King YSN330 30 lb Tank With Gauge

The YSN330 is a vertical steel 30 lb propane cylinder with a built-in gas meter gauge and an OPD valve. The gauge is intended to show the remaining gas level, which can help users plan refills for grills, camping, fishing, and other outdoor activities.
Best for: Buyers who want a visual fuel-level reading rather than relying only on usage estimates. It is selected for combining the target 30 lb size with a gauge and overfill protection device.
The tank is described as empty, pre-purged, and ready for filling. Its welded-steel body has a powder-coated finish for rust prevention. Limitation: It does not arrive filled with propane, so arrange a refill before use.
Flame King YSN-301 30 lb Steel Tank

This vertical 30 lb cylinder has a Type 1 OPD valve and a welded-steel body with a powder-coated finish. The listing says it is pre-purged and ready to be filled. It also states that the tank is X-ray and hydrostatic tested and DOT and Transport Canada certified.
Best for: Buyers seeking a standard 30 lb vertical tank with the listed testing and transport credentials. Choose this if a built-in gauge is not a priority and you want a refill-ready cylinder with an OPD valve.
Limitation: The supplied product details do not list a fuel gauge, so users may need another method to monitor remaining propane.
Flame King YSN-301 White 30 lb Tank

This listing describes a white Flame King YSN-301 with a Type 1 OPD valve. Like the other YSN-301 listing, it is an empty, pre-purged steel cylinder with a powder-coated finish. The listed features also include X-ray and hydrostatic testing and DOT and Transport Canada certification.
Best for: Buyers who are comparing listings for the white YSN-301 model and want the stated safety and construction features. It is a close alternative to the other YSN-301 rather than a substantially different tank design.
Limitation: The listed features do not identify a gauge or distinguish this listing’s included accessories from the other YSN-301 entry. Confirm the listing details before ordering if those differences matter.
Flame King YSN301HZL Horizontal 30 lb Tank

The YSN301HZL is a horizontal, low-profile 30 lb propane cylinder intended for applications such as fire pit tables, patio heaters, barbecues, RVs, and truck campers. Its listed features include a Type 1 OPD valve, a built-in gauge, formed handle collar, bracket feet, and a bolt-down option.
Best for: Buyers whose equipment or storage space calls for a horizontal tank. The gauge helps monitor propane, while the bracket feet and bolt-down option support placement in a suitable setup.
Limitation: This is a horizontal cylinder, so avoid choosing it if your equipment requires a vertical tank. Confirm the required orientation for your appliance before purchase.
Flame King YSN401 40 lb Tank

The YSN401 is a 40 lb steel propane tank, so it is not a direct match for a 30 lb tank search. Its listed features include an OPD valve, a pre-purged cylinder ready for filling, powder-coated welded steel, and X-ray and hydrostatic testing. The listing also states DOT and Transport Canada certification.
Best for: Buyers comparing a larger-capacity alternative and who can accommodate a 40 lb cylinder. It is included because it shares the brand and general tank style, while offering a different stated capacity.
Limitation: Choose another product if you specifically need a 30 lb tank; capacity and physical fit may differ. Check the appliance and storage requirements before selecting a larger cylinder.
Buying Guide: How To Choose A 30 lb LP Tank
Should you choose a vertical or horizontal tank?
Match the tank orientation to the appliance or installation requirements. The YSN330 and YSN-301 listings are standard vertical options, while the YSN301HZL is explicitly horizontal and low-profile. Do not assume that a horizontal cylinder can replace a vertical one; verify the required orientation in the equipment instructions.
Is a built-in gauge important?
A gauge can provide a visual indication of propane level. The YSN330 and YSN301HZL list built-in gauges. The two vertical YSN-301 listings do not list one among the supplied features. If avoiding unexpected empty-cylinder downtime matters, compare gauge availability before choosing.
What does an OPD valve do?
An overfill prevention device is designed to help prevent overfilling during filling. The listed 30 lb products include an OPD valve. The product descriptions state that this feature is required by law in most states and that some filling locations may not fill tanks without one. Confirm current local requirements and refill-station policies.
Does the tank arrive full?
No. The listed vertical models are described as empty and pre-purged, ready for filling. Plan to have the tank filled before relying on it for cooking, heating, or camping. Follow the tank and appliance instructions when arranging filling and use.
What details should you verify before buying?
Check the required capacity, orientation, valve type, and physical fit for your equipment. Consider whether you need a gauge, handle or mounting features, and whether the cylinder’s listed compliance information suits your intended transport and use. The 40 lb YSN401 is a larger alternative, not a substitute when 30 lb capacity is required.
Frequently Asked Questions
How much propane does a 30 lb tank hold?
A 30 lb propane tank is identified by its propane capacity. The supplied product descriptions do not give additional volume measurements, so consult the tank label or manufacturer information for exact specifications.
Is a 30 lb LP tank the same as a 30 lb propane tank?
LP gas commonly refers to liquefied petroleum gas, which includes propane. These product listings describe propane cylinders with a 30 lb capacity.
Which listed 30 lb tank has a gauge?
The Flame King YSN330 vertical tank and YSN301HZL horizontal tank list built-in gauges.
Which product is the horizontal option?
The Flame King YSN301HZL is the listed horizontal, low-profile 30 lb cylinder. Verify that your appliance requires a horizontal tank before selecting it.