Best 120 Gallon Propane Tanks for Generators With Durable Covers and Accessories
Choosing the right 120 gallon propane tank for your generator ensures reliable fuel storage and optimal performance. This guide reviews top-rated propane tanks, covers, and compatible generators to help you make an informed decision. Below is a summary table of the most relevant products to consider.
| Product Name | Brand | Key Features |
|---|---|---|
| Flame King YSN420ASME 420LB (120 Gallon) ASME Vertical Steel Propane Tank | Flame King | Pre-installed float gauge, high-quality valves, vacuum sealed, ASME certified |
| Flame King 120 Gallon Tank & 2 Stage Regulator Combo | Flame King | Includes regulator, float gauge, ASME tested, ready for RVs and trailers |
| VeyoStories 420LB Propane Tank Cover Waterproof & Dustproof | VeyoStories | 600D Oxford fabric, all-weather protection, easy valve access |
| YardJoyliz 420LB Steel Propane Tank Waterproof Cover | YardJoyliz | Heavy-duty waterproof, rust proof, sun and frost protection |
| WEN 14,500-Watt Tri-Fuel Generator | WEN | Runs on propane, gas or natural gas; electric start; CO watchdog sensor |
Flame King 120 Gallon Vertical Steel Propane Tank

This Flame King 420LB steel propane tank features a vertical design to save space. It ships empty and pre-purged, ensuring it’s ready for filling upon arrival. The tank is equipped with a pre-installed propane float gauge, allowing easy monitoring of propane levels. You can also add a “Remote Ready Dial” for more accurate gas readings, sold separately.
It includes high-quality valves such as a 1.25-inch ACME fill valve, a service valve, and a relief valve. The tank is ASME certified for safety and reliability. The robust steel construction and white finish resist outdoor wear, making it suitable for long-term generator fuel storage.
Flame King 120 Gallon Tank & 2 Stage Propane Regulator Combo

This bundle pairs the popular Flame King 120 gallon propane tank with a 2 stage propane LP horizontal super compact regulator. The regulator features a POL fitting ideal for RVs, trailers, and vans, ensuring smooth gas flow and pressure management.
The tank itself maintains superior build quality with high-grade valves and a float gauge already installed. It is vacuum purged, X-ray inspected, and hydrostatic tested for maximum safety. This included regulator simplifies the process of connecting propane to your generator, making this combo an excellent choice for ready-to-use setups.
VeyoStories Waterproof Propane Tank Cover for 120 Gallon Tanks

Protect your propane investment with this heavy-duty 600D Oxford cloth cover by VeyoStories. Designed specifically for 420LB (120 gallon) steel propane tanks, it guards against sun, rain, snow, and frost damage. Its waterproof and dustproof qualities maintain tank integrity, reducing rust and extending tank life.
The cover features a top valve access panel so you can easily check the pressure gauge and adjust valves without removing the cover. Its dimensions (54″H x 30″D) ensure a snug fit. This all-weather solution is perfect for homeowners needing both protection and convenience for their generator’s propane supply.
YardJoyliz Waterproof Tank Cover for 100-120 Gallon Propane Tanks

The YardJoyliz cover offers effective weather protection for 100 and 120 gallon propane tanks. Its waterproof fabric prevents frost buildup and guards against sun exposure, helping to keep the tank rust-free year-round. This product serves as an attractive and practical alternative to leaving a propane tank exposed.
This heavy-duty cover is ideal for users wanting to shield their steel tanks from harsh elements, prolonging their lifespan while maintaining the tank’s appearance. The cover’s robust construction ensures continual protection through various seasons with minimal maintenance.
WEN 14,500-Watt Tri-Fuel Generator with Propane Capability

This WEN generator runs efficiently on propane, gasoline, or natural gas, providing flexibility for fuel sources. When on propane, it delivers a surge wattage of 12,500 and running wattage of 10,300, suitable for powering moderate to large household loads or jobsite equipment.
It supports 120V and 240V outputs and includes transfer-switch readiness, crucial for seamless home backup power integration. The built-in CO watchdog sensor offers an important safety feature by sensing carbon monoxide levels and shutting the unit off if necessary. Its electric start and wheel kit improve ease of use and portability.
Buying Guide for 120 Gallon Propane Tanks for Generators
Understanding the key factors in selecting a propane tank and related accessories helps ensure you invest in the right setup for your generator’s fuel needs.
Tank Certification and Safety
- ASME Certification: Tanks should comply with ASME standards, guaranteeing rigorous testing like hydrostatic and X-ray inspections for safety and quality.
- Valves and Gauges: Reliable valves (fill, service, relief) and pre-installed float gauges improve safety and convenience in operation and monitoring.
Size and Capacity
- Match Tank Size: While 120 gallons is typical for home generators, ensure the tank size fits your fuel consumption needs and available installation space.
- Shape and Orientation: Vertical tanks save ground space, while horizontal tanks may be easier to transport or position depending on your setup.
Durability and Weather Resistance
- Material Quality: Steel tanks with powder-coated or painted finishes resist rust and corrosion.
- Protective Covers: Waterproof, UV-resistant covers made from durable fabrics shield tanks from the elements, extending longevity.
Compatibility with Regulators and Generators
- Included Accessories: Some propane tanks come with compatible regulators, simplifying installation and ensuring proper pressure control for your generator.
- Generator Fuel Type: Ensure your generator supports propane and matches the pressure settings of your tank and regulator.
Ease of Installation and Maintenance
- Pre-purged Tanks: Tanks shipped empty and vacuum sealed are ready for filling, reducing installation prep time.
- Access Features: Covers with valve access panels allow easy monitoring without constant removal, enhancing convenience.
By considering these factors, you can confidently select a high-quality 120 gallon propane tank and accessories that provide safe, reliable fuel storage for your generator during power outages or remote operations.