STI Flameshield® Tanks
STI Flameshield® tanks combine the proven performance of UL 142 above ground storage tanks with built-in secondary containment and added fire resistance. As a result, they’re a dependable choice for many commercial, industrial, municipal, agricultural, and fleet fueling applications.
At Clark Welding Tanks, we help businesses, municipalities, contractors, farms, fleet operators, and industrial facilities find the right tank for their fuel storage needs. Whether you’re storing diesel fuel, gasoline, waste oil, lubricants, chemicals, or water, we’ll help you choose the right tank for your project.
In addition, we offer a wide range of factory-installed equipment and custom options that simplify installation and reduce field labor. If you’re still comparing storage solutions, our team will explain your options and help you select the best tank for your application.
What Are STI Flameshield® Tanks?
STI Flameshield® tanks are double wall steel storage tanks built to the UL 142 standard. They feature a tight-wrap design that provides built-in secondary containment. In addition, each tank carries the Steel Tank Institute (STI) Flameshield® label, which indicates the design has undergone additional fire-resistance testing.
Many businesses choose STI Flameshield® tanks when they need more fire resistance than a standard double wall tank. At the same time, they receive the proven performance and reliability of UL 142 above ground storage tanks. As a result, these work well in a wide range of fuel storage applications.
Common applications include:
- Fleet fueling
- Commercial facilities
- Municipal operations
- Construction sites
- Industrial plants
- Emergency generator systems
- Agricultural fuel storage
- Mining operation
STI Flameshield® tanks are available in capacities from 150 to 30,000 gallons with both single- and multiple-compartment configurations. Likewise, customers can choose carbon steel or stainless steel construction, interior coatings, and a wide selection of factory-installed equipment to meet their project requirements.
These tanks are suitable for storing many compatible products, including:
- Diesel fuel
- Gasoline
- Biodiesel
- Waste oil
- Lubricants
- Antifreeze
- Many compatible chemicals
- Water
If you’re still comparing storage solutions, explore our UL 142 Above Ground Storage Tank page to learn more about standard double wall tanks. On the other hand, if your project requires a protected tank, compare our UL 2085 Fireguard® Tank page. For additional guidance, read Choosing the Right Above Ground Fuel Storage Tank to learn which tank best fits your application.
To learn more about the STI Flameshield® listing, visit the Steel Tank Institute Flameshield® Trademark Information. It provides additional information about the Flameshield® standard and its requirements.
Why Choose STI Flameshield® Tanks?
Every fuel storage project has different requirements. That’s why many businesses choose STI Flameshield® tanks when they need built-in secondary containment with added fire resistance. In addition, these tanks combine the proven performance of UL 142 above ground storage tanks with features designed for demanding fuel storage applications.
Whether you’re fueling heavy equipment, supporting backup generators, managing a commercial fleet, or serving a municipality, STI Flameshield® tanks provide a dependable storage solution. Likewise, they’re available in a variety of sizes, configurations, and equipment packages to meet many project requirements.
Before selecting a tank, it’s important to consider your application, site conditions, and local code requirements. Our team can help you compare your options and choose the right solution for your project.
The features below highlight four of the biggest reasons customers choose STI Flameshield® tanks.
The tight-wrap double wall design provides built-in secondary containment. As a result, it helps contain leaks and supports safe above ground fuel storage.
Added Fire Resistance
In addition to meeting the UL 142 standard, STI Flameshield® tanks complete additional fire-resistance testing. Therefore, they’re a popular choice for many commercial and industrial fuel storage applications.
Whether you need a single- or multiple-compartment tank, STI Flameshield® tanks offer many configuration options. Likewise, you can choose carbon steel or stainless steel construction, interior coatings, and a wide range of factory-installed equipment.
Performance
From fleet fueling and municipalities to agriculture and industrial facilities, STI Flameshield® tanks support many demanding applications. As a result, businesses choose them for dependable above ground fuel storage.
Available Sizes & Options for STI Flameshield® Tanks
Every STI Flameshield® tank can be configured to meet your project’s requirements. Whether you need a standard storage tank or a more customized solution, you’ll find a variety of construction options, sizes, finishes, support styles, and equipment packages. In addition, choosing the right options before installation can help simplify your project and improve long-term performance.
The available features below highlight many of the construction options, finishes, support systems, and factory-installed equipment available for STI Flameshield® tanks. If you need something specific, our team will help you configure a tank that fits your application.
- Tank Construction
- Double Wall
- Split Compartments
- Sizes & Materials
- Capacities from 185 - 30,000 Gallons
- Carbon Steel
- Stainless Steel
- Custom Fabrication
- Built to Customer Specifications
- Custom Openings
- Special Nozzle Layouts
- Finishes
- Zinc Red Oxide Primer
- Six Standard Top Coat Colors
- Interior Coatings
- Supports
- Multiple Support Options
- Equipment Packages
- Pumps & Dispensing Equipment
- Gauges & Level Monitoring
- Overfill Prevention
- Vents & Fill Connections
Plan Your STI Flameshield® Tank
Choosing the right STI Flameshield® tank starts with understanding your project. Whether you’re replacing an existing tank or planning a new installation, the product you’ll store, the required capacity, your site layout, and local code requirements all play an important role in selecting the right tank.
Before requesting a quote, gather the information below. The more details you can provide, the better we can recommend the right STI Flameshield® tank, equipment, and configuration for your application.
Project Planning Checklist
✓ What product will you store?
Diesel fuel, gasoline, biodiesel, waste oil, lubricants, antifreeze, water, and many compatible chemicals may require different materials, coatings, fittings, or accessories. Therefore, identifying the stored product is one of the first steps in selecting the right tank.
✓ How much storage capacity do you need?
Estimate your daily or monthly fuel usage, delivery schedule, available space, and future growth. As a result, you’ll have a better idea of the tank capacity that best fits your operation. If you’re unsure what size tank you need, explore our How to Size Diesel Storage guide.
✓ Will you store fuel, dispense fuel, or both?
Some projects only require storage. However, others include pumps, meters, filters, hose reels, dispensers, and fuel management systems. Planning ahead helps ensure your tank is equipped for your operation. Learn more about available accessories on our Tank Options page.
Site and Install Considerations
✓ Where will the tank be installed?
Before ordering, consider your foundation, delivery truck access, maintenance clearance, and available space. In addition, check whether your local Authority Having Jurisdiction (AHJ) has specific installation requirements. You may also find our Above Ground Storage Tank Regulations and Fuel Tank Codes resources helpful.
✓ Does your project require an STI Flameshield® tank?
Some installations work well with a standard UL 142 Above Ground Storage Tank. On the other hand, certain applications may benefit from the added fire resistance offered by an STI Flameshield® tank. If you need additional protection, you may also want to compare a UL 2085 Fireguard® Tank. Our team can help you compare your options and choose the solution that best fits your project.
Finally, if you’d like to learn more before requesting a quote, explore our Choosing the Right Above Ground Fuel Storage Tank, UL 2085 vs. UL 142, Tank Options, and Tank Calibration Charts resources. Likewise, if you have questions about your application, Contact Clark Welding Tanks or Request a Fuel Storage Tank Quote, and our team will be happy to help.
Keep Learning
Choosing the right STI Flameshield® tank starts with understanding your options. Whether you’re comparing tank types, learning about industry standards, or planning a complete fueling system, these resources can help. In addition, they explain construction, fire resistance, equipment options, and fuel storage requirements so you can make a more informed decision before you buy.
Learn how STI Flameshield® tanks work, what makes them different from standard UL 142 above ground storage tanks, and when added fire resistance may be the right choice for your application.
Compare UL 2085 Fireguard® tanks, STI Flameshield® tanks, and standard UL 142 tanks. Then, learn which design best fits your project’s requirements.
What Type of Above Ground Storage Tank Do I need?
Compare UL 142 tanks, STI Flameshield® tanks, UL 2085 Fireguard® tanks, and Self Contained Tanks. As a result, you’ll better understand which storage solution fits your application.
EQUIPMENT
Discover pumps, meters, filters, hose reels, gauges, overfill prevention equipment, and other accessories available for STI Flameshield® tanks. Likewise, learn how the right equipment package can simplify your installation.
Explore STI Flameshield® Tank Projects
Explore real STI Flameshield® tanks supplied by Clark Welding Tanks for fleet fueling, commercial facilities, municipalities, construction sites, industrial operations, emergency generators, agriculture, and many other fuel storage applications. In addition, our portfolio features 700+ project photos spanning more than three decades, showcasing the quality, craftsmanship, and customization behind the projects we deliver.
See our complete Project Portfolio
Whether you’re looking for a standard STI Flameshield® tank or a complete fueling system with factory-installed equipment, you’ll find examples featuring a wide range of capacities, equipment packages, support styles, and custom configurations. Likewise, the featured galleries below highlight just a small sample of the projects in our complete portfolio.
STI Flameshield® tanks
Browse completed STI Flameshield® tanks in a variety of sizes, capacities, and configurations for many fuel storage applications.
Dispensing Equipment
Explore pumps, meters, filters, hose reels, cabinets, and other fueling equipment installed before shipment to help streamline installation and support your operation.
Access Systems
Explore ladders, stairs, platforms, catwalks, and handrails designed for safe operation and maintenance.
Custom Tank Options
View examples of tank accessories, including vents, gauges, overfill prevention equipment, and other custom options.
Ready to Get Started?
Every fuel storage project is different. That’s why our team takes the time to understand your application before recommending a solution. Whether you need a standard STI Flameshield® tank or a complete fueling system with factory-installed equipment, we’ll help you choose the right configuration for your project.
Before you buy, let us answer your questions, discuss your requirements, and prepare a detailed quote. When you’re ready, Request a Fuel Storage Tank Quote or Contact Clark Welding Tanks to get started.