Best 100 Gallon Gas Storage Tank Options for Projects and RVs

Finding a reliable 100 gallon storage tank depends on the intended use—fuel transfer, water storage, or utility needs. The following selections offer durable materials, corrosion resistance, and practical features for on-site or mobile use. Use the quick comparison table below to jump to product details that match your needs.

Product Brand Capacity Key Feature
Tradesman 83010T Tradesman 100 gallons 14-gauge steel, rectangular design
uws Combo Transfer Tank uws 100 gallons Diesel transfer with built-in toolbox
Norwesco 100 Gallon Flat Bottom Norwesco 100 gallons Flat bottom for truck/trailer installation
RecPro RV Fresh Water Tank RecPro 100 gallons Fresh drinking water option for RVs
Aluminum Tank Industries TTL50 ATI 50 gallons (listed as 50, but relevant as a light-duty fuel tank option) Aluminum, DOT-permitted for multiple fuels

Note: Each product supports different configurations and usage scenarios. Review mounting requirements, material compatibility, and local regulations to determine the best fit for your application.

Tradesman 100-Gallon Steel Tank

Tradesman 83010T 100-Gallon Tank

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The Tradesman 83010T is a full-size 100-gallon storage tank crafted from 14-gauge steel. Its rectangular footprint measures approximately 48 inches long by 23 inches wide and 23 inches high, optimizing space in trucks, trailers, or worksites where width and height constraints matter. The steel construction emphasizes durability for outdoor use and rough handling. Ideal for storage of fuels or other liquids in controlled environments, this tank provides a rugged option for heavy-duty applications without compromising capacity.

uws Combo Transfer Tank 100 Gal White

uws Combo Transfer Tank 100 Gal White

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The uws Combo Transfer Tank combines a 100-gallon capacity with on-site storage convenience. This white tank is designed to transfer diesel and other non-flammable liquids, making it suitable for fueling on job sites or fleets. A built-in toolbox adds extra storage without sacrificing truck bed space, and the patented rigid-core foam-filled lid improves strength and prevents lid binding. This configuration is well-suited for maintenance operations where quick, organized fueling and tool access are valuable.

Norwesco 100 Gallon Flat Bottom Tank

Norwesco 100 Gallon Flat Bottom Tank

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The Norwesco 100-gallon flat-bottom utility tank is designed for versatile applications, including lawn care, construction, mobile washing, and outdoor recreation. The flat bottom enables stable installation in trucks or trailers, facilitating secure transport and simple mounting. This tank can serve as a reliable storage unit for liquids or other on-site needs, with a design focused on compatibility with automotive and trailer mounting.

RecPro RV Fresh Water Tank 100 Gallon

RecPro RV Fresh Water Tank 100 Gallon

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The RecPro 100-gallon fresh water tank is designed for RV and trailer applications, offering a reliable supply of potable water for extended trips. Constructed from sturdy polyethylene, it withstands travel when properly mounted and guards against leaks. This tank is proudly made in the USA and emphasizes durable water storage for recreational use, ensuring drivers and campers have a steady water source on the road.

Aluminum Tank Industries TTL50 Fuel Tank

ATI TTL50 Fuel Tank

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The ATI TTL50 is a fuel-capable aluminum tank designed for legal use with various fuels, including gasoline, diesel, methanol, and aviation fuels. Constructed from .125-inch thick aluminum diamond plate, the TTL50 offers resistance to corrosion and a lightweight profile suitable for transport and installation in compact spaces. This option addresses regulatory and durability concerns for fuel storage in mobile or fixed settings.

classAcustoms T-10000 Fresh Water Tank

classAcustoms T-10000 Tank

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The classAcustoms T-10000 is a 100-gallon RV fresh water or gray water tank built for Class A motorhomes. Made from NSF-approved materials, it supports safe storage of drinking water and gray water. The ribbed design provides extra support, and the tank includes multiple fittings (1.5-inch and 0.5-inch NPT) to simplify plumbing and installation. It offers a flexible installation footprint by allowing rotation to adjust height or width as needed.

uws Hammerhead 100-Gallon Transfer Tank

uws Hammerhead 100-Gallon Tank

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The Hammerhead-style aluminum transfer tank from uws is designed for diesel or other non-flammable liquids with a distinct L-shape that accommodates a truck toolbox. It includes a lockable, commercial-grade vented cap with a reinforced collar for security. This configuration optimizes space in the vehicle while providing efficient fuel transfer capabilities for fleets and remote work sites.

Buying Guide: Key Considerations for a 100 Gallon Tank

  • Material compatibility: Choose steel for rugged durability, aluminum for lighter weight and corrosion resistance, or plastic for specific chemical compatibility and ease of cleaning.
  • Intended use: Fuel transfer vs. water storage vs. utility storage will guide design features such as fittings, vents, lids, and mounting options.
  • Mounting and space: Consider truck bed dimensions, trailer mounts, and whether a flat bottom or shaped tank better suits your installation.
  • Safety and regulations: For fuels, ensure compliance with local DOT or other regulatory requirements and use appropriate containment and venting.
  • Fittings and accessibility: Look for built-in fittings, NPT ports, and ease of access for filling, draining, and maintenance.
  • Durability and weather exposure: Outdoor use benefits from corrosion resistance, reinforced lids, and secure caps to prevent leaks and contamination.
  • Maintenance and cleaning: Materials should allow straightforward cleaning, with accessible drainage and compatible cleaning agents when needed.
  • Warranty and support: Check manufacturer warranties and availability of replacement parts or accessories for long-term use.

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