
Introducing the Gemini Double Wall Tank
When it comes to secure and reliable liquid storage, the Gemini Double Wall Tank by Peabody Manufacturing sets a high standard. Designed as a tank within a tank, this innovative storage tank provides superior protection, durability, and compliance with today’s safety regulations. Whether you’re managing pure chemicals, mixtures, or other liquids, the Gemini Double Wall Tank ensures peace of mind with its heavy duty double wall construction and smart engineering.
Peabody Manufacturing has earned a reputation for exceptional craftsmanship and their commitment to quality. Each tank is made from advanced materials and design features to meet the hardworking demands of modern industries. Their expertise and dedication have made them a trusted name in the world of dual wall storage tanks and innovation.
The National Tank Outlet is proud to partner with Peabody Manufacturing to offer these unique storage solutions directly to you. As a trusted supplier with years of experience, we are dedicated to providing only the best in premium storage tanks, precision engineered and manufactured to meet the needs of agricultural, industrial, municipal, and commercial sectors. With competitive pricing, expert advice, and a wide product range, the National Tank Outlet is your go-to source for dependable storage solutions. Stay with us as we explore the features, benefits, and applications of the Gemini Double Wall Tank.
Design and Construction of the Gemini Double Wall Tank
The Double Wall Advantage
At the core of the Gemini Double Wall Tank’s exceptional performance is its innovative, built-in double wall containment. This tank-within-a-tank design provides unparalleled secondary containment security, ease of use, and compliance, ensuring the complete protection of stored liquids. The outer wall is engineered to provide 110-120% containment of the inner tank’s volume, a critical safety measure that meets EPA 49 CFR regulations.

This built-in security greatly lessens the risks of leaks and spills, making the Gemini Double Wall Tank a dependable choice for industries that prioritize or require higher security levels for their liquid storage and workplace safety.
Durable Materials Built to Last
The Gemini Double Wall Tank is constructed using rotationally mold manufacturing from virgin grade high density polyethylene resin, a material renowned and trusted for its durability and widespread resistance to chemicals and wear. The rotational molding process creates an evenly strong and seamless structure, meaning no weak points or joints that could compromise tank integrity over time. This quality construction ensures the tanks can withstand physical impacts and harsh environmental conditions, making them ideal for demanding use cases.
Two material options are available to match the tank’s construction to the application and performance required:
- Heavy-Duty Polyethylene: For versatile chemical compatibility and increased durability in high impact environments.
- XLPE (Cross-Linked Polyethylene): For better chemical resistance with select aggressive or corrosive liquids.
UV Protection for Indoor and Outdoor Applications
Gemini Double Wall Tanks include integrated UV inhibitors in their construction. These additives protect the tank’s plastic against sunlight degradation to extend its lifespan and ensure optimal performance in both indoor facilities and outdoor setups. Whether exposed to harsh sun or kept in a controlled environment, these tanks have been engineered to maintain their structural integrity and reliability.
Seamless Design for Ultimate Strength and Low Maintenance
Another hallmark of the Gemini Double Wall Tank is its seamless design. A smooth, single piece construction adds to the tank’s overall strength by eliminating potential weak points that could lead to cracks or leaks over time. This advanced manufacturing not only provides durable containment but also reduces replacement and maintenance needs, saving time and resources for users. A tank that’s built to last and easy to maintain is one that supports uninterrupted operations in any industrial or commercial setting.
The thoughtful engineering behind the Gemini Double Wall Tank delivers a storage solution that doesn’t just meet industry standards but exceeds them. Its superior materials, innovative dual tank design, and unique features make it a product that stands out in today’s market. From safety to durability, it checks every box needed for reliable liquid storage.

Available Styles and Sizes of the Gemini Double Wall Tank
These double containment tanks are designed to cater to a diverse array of storage needs, with styles and sizes tailored for particular applications. Here’s a detailed breakdown of the three available design styles:
Square Style Tanks
Compact and space efficient, the square tank design is ideal for users who need storage solutions that can fit tight spaces or be conveniently organized. The Peabody Square Double Wall Tank is perfect for smaller setups or scaling applications while still offering robust safety and reliability.

- Capacity: Storage volumes range from smaller options like 5 and 10 gallons to larger options with sizes reaching up to 340 gallons.
- Design: The original square shaped tank structure allows for easy integration into confined or modular spaces without sacrificing capacity or functionality.
- Thickness: Available in 1.5 specific gravity and heavy duty 1.9 specific gravity for more dense, heavy weighted chemicals and solutions.

Cylindrical Style Tanks
The Peabody Cylindrical Double Wall Tank design is the most versatile option, covering a wider range of uses and applications. Its classic shape accommodates industries requiring both small and large scale liquid storage.

- Capacity: Storage volumes range from 15 gallon models to massive 1,000 gallon tanks.
- Availability: One standout product is the 220 gallon cylindrical tank measuring 48 inches in diameter and 48 inches in height. This size strikes the perfect balance for mid sized operations, making it a popular choice.
- Design: The traditional cylindrical shape provides well-rounded versatility and strength.
- Thickness: Available in 1.5 specific gravity and heavy duty 1.9 specific gravity for more dense, heavy weighted chemicals and solutions.

Value Pak Tanks
For operations that require high volume liquid storage, additional functionality, and specific features, the Value Pak tanks are an excellent choice. So named, not for cost value, but for the work value provided by their engineering, extra features, and three model options. These tanks are our top-of-the-line option, fully equipped and engineered to handle large capacities and the most demanding bulk storage applications.

- Capacity: Storage volumes range from 300 gallons up to 10,500 gallons, ensuring maximum flexibility in meeting storage needs and scaling operations.
- Design: Cylindrical in shape, these tanks maintain all the safety containment features that come standard with the other Gemini Double Wall Tank options and more.
- Feature Options: Available in three different models: Silver Pak, Gold Pak, and Platinum Pak.
- Thickness: Available in 1.5 specific gravity and heavy duty 1.9 specific gravity for more dense, heavy weighted chemicals and solutions.
Value Pak Models
- Silver Pak: The Silver Pak includes a welded double wall tank with interstitial supports, a vented twist lid, top discharge (with dip tube), and fill connection. It also features a 2″ electronic level connection, mushroom vents on the containment tank, a primary secondary overflow pipe assembly, and a secondary drain connection (plugged). This package is designed for standard chemical storage needs and includes PVC / EPDM bulkhead fittings and a welded overflow pipe assembly. Hydrotesting is included on the final assembly for quality assurance.
- Gold Pak: Building on the Silver Pak, the Gold Pak adds welded polyethylene couplings in place of bulkhead fittings, with options for threaded or flanged connections. Tanks under 72″ in height include a 90-degree ell, male PPL quick coupler, cap, and lanyard on the top fill connection. For tanks over 72″ in height, the package includes a PVC / EPDM truck fill connection with a ball valve, check valve, and external drop line, along with a PPL quick coupler mounted to the tank sidewall at 42″ elevation. Additional features include lifting lugs and a secondary tank with an RF-Capacitance style leak detection sensor.
- Platinum Pak: The Platinum Pak includes all features of the Silver and Gold Paks, with additional enhancements for advanced functionality. It features an inverse level gauge (mini-inverse for tanks up to 1500 gallons and standard for larger tanks), a bottom sidewall dual containment drain connection with a side access box / visual inspection port, and a flooded suction connection with a 1″ or 2″ SST flex hose. This package also includes a fiberglass access ladder for tanks taller than 65″, providing easy and safe access.

Practical Features for Functionality
Beyond their size and style options, Gemini Double Wall Tanks are packed with features that add onto their usability and durability:
- Threaded Lids provide a secure seal, preventing contamination or accidental release and making access easier for maintenance or refills.
- Pump Mounting Surfaces are conveniently integrated to simplify the addition and operation of pumps and accessories.
- Two Specific Gravity Options ensure that the tanks can accommodate varying liquid densities up to 15.8 pounds per gallon.
- Dimensions are engineered for practical placement into existing systems or spaces.
- Three Value Pak Models provide further options for building onto the existing base tank to improve functionality, safety, and compatibility with work needs.
With three distinct options and a wide range of capacities and features, Gemini Double Wall Tanks offer unparalleled flexibility for many industries. Whether your priority is compact storage, versatility, or high volume containment, we have a tank that is sure to meet your specific requirements.
Key Benefits of the Gemini Double Wall Tank
The Gemini double containment industrial chemical storage tank offers superior advantages in durability, safety, chemical compatibility, and convenience that set it apart as a premier storage solution.
1. Durability You Can Depend On
Built to endure demanding work environments, the Gemini Double Wall Tank features a strong polyethylene construction. This material is a benefit as it is highly resistant to impacts, wear, and exposure to harsh chemicals so the tank remains reliable over time.
- Material Options: Gemini tanks are available in PE, XLPE, standard, with PPL, PVDF, and an FRP wrap available on request.
- Water Quality: Each tank can be fabricated to meet ANSI/CAN NSF 61 standards for water quality on request.
2. Enhanced Safety Features
Protecting liquids from leaks and spills is a top priority, and the Gemini Double Wall Tank excels at this challenge. Its double wall, tank-in-a-tank design not only contains the stored liquid but also creates an added layer of protection against both internal and external hazards.
- This design complies with industry safety codes and environmental regulations for secondary containment, offering peace of mind for regulated industries. Whether it’s hazardous chemicals, high purity ingredients, or sensitive solutions, the tank is a guarantee for safe operation.
3. Comprehensive Chemical Compatibility
Being made from professional grade polymer, the Gemini Double Wall Tank is designed to store a diverse range of chemicals, making it adaptable to a wide variety of applications. Some of the many substances it can safely handle include:
- Biodiesel
- Brine
- Calcium Chloride
- Sodium Hydroxide
- Urea
- Hydrochloric Acid
- Potassium Hydroxide
- Ethanol
- Acetic Acid
- Magnesium Sulfate
For industries handling particular corrosive or aggressive liquids, the tank is available in specialized XLPE (cross-linked polyethylene) for added chemical resistance and tough storage challenges.
4. Convenience and Ease of Use
Storage efficiency extends beyond the tank’s operational life to the installation process itself. Gemini Double Wall Tanks are shipped fully assembled, which brings worthwhile advantages to the end user:
- Time Savings: Fully assembled tanks eliminate the need for time consuming field assembly for quicker deployment and less downtime.
- Cost Efficiency: By reducing on-site labor needs, businesses can save on overall installation costs.
The Complete Storage Solution
These benefits make Gemini Double Wall Tanks a valuable addition to any operation that requires reliable and safe liquid storage with secondary containment. Its durability, safety compliance, chemical versatility, and user-friendly setup are second to none, ensuring it meets even the most rigorous industrial standards.
Applications and Industries for the Gemini Double Wall Tanks
The versatile engineering of Gemini Double Wall Tanks makes them well suited for numerous industries. Their ability to provide secure, durable, and adaptable liquid storage solutions ensures they meet the unique needs of different businesses. Here’s a closer look at the industries that can benefit from their innovative design:
1. Chemical Storage
These industrial strength double containment tanks are designed to safely store hazardous and corrosive chemicals, protecting both the environment and workers. With secondary containment as an integrated safety feature, these tanks are essential for companies that deal with volatile or reactive substances.

- Commonly stored chemicals include sodium hydroxide and hydrochloric acid.
- Compliance with environmental regulations to prevent cost spills and accidents.
2. Agriculture
Agricultural applications rely heavily on secure and efficient liquid storage. Gemini Double Wall Tanks provide the necessary capacity and built-in safety for managing potentially dangerous resources.
- Suitable for storing water, fertilizers, and pesticides.
- Perfect for fertigation and injection systems due to their durable design and built-in pump mounting area.
- Beneficial for livestock operations to provide safe containment of nutrient solutions or feed supplements.
3. Industrial Use
Manufacturers and chemical processors can benefit greatly from the safety and durability of these tanks.

- Ideal for chemical processing plants to store raw materials or finished chemical blends needed in production processes.
- Support manufacturing facilities that use large quantities of lubricants, oils, and solvents for machinery operations.
- Provide containment solutions for industrial cleaning agents often used in industries such as mining and oil refining.
4. Municipal and Environmental Applications
Municipalities and environmental agencies can depend on Gemini Double Wall Tanks for several key applications.
- Wastewater treatment facilities that store water treatments, polymers, or alum solutions.
- Brine storage used for deicing roadways during winter seasons.
- Environmental remediation projects that need to secure collected hazardous liquids and prevent further environmental harm.
5. Energy and Power Generation
The energy sector relies on the secure storage of critical liquids for their operations.
- Storing coolants, oils, and other chemicals required for power equipment.
- Biofuel storage in renewable energy facilities.
- Secure containment of transformer oils at substations.
6. Food and Beverage Production
These tanks are suitable for ensuring safe liquid handling within food grade applications.

- Store food grade liquids, such as syrups or cleaning agents used in production plants.
- Secure solution for byproducts and waste solutions from manufacturing lines.
- Ideal for specialized industries like breweries, dairies, and other facilities with meticulous liquid containment requirements.
7. Pharmaceutical and Healthcare Sectors
The healthcare and pharmaceutical industries can depend on these tanks for reliable, sterile storage.
- In pharmaceutical manufacturing for sterile chemical solutions or key liquid ingredients.
- Provide secondary containment for hazardous medical waste or expired materials.
8. Construction and Mining
They can be used in construction and mining operations that require heavy duty tanks for their operations.

- For storing drilling fluids or industrial adhesives needed in building projects.
- For processing solutions like acid leach solutions used in mineral extraction.
- For equipment maintenance and support by storing lubricants, fuel, or coolants required by machinery.
9. Transportation and Logistics
Transportation hubs and facilities can benefit from these tanks for everyday operations.
- For storing cleaning solutions and deicers used in vehicle maintenance, especially for large fleets.
- For managing bulk quantities of diesel exhaust fluid (DEF) or motor oils.
10. Military and Defense
Military operations, both at home and abroad, often require secure containment solutions.

- Reliable storage for fuel, lubricants, and mission-critical liquids.
- At remote bases for the containment of hazardous solvents and chemicals.
- For waste management through safe containment of hazardous materials.
11. Research and Development
For innovative industries, dependable storage is frequently needed in the research and development of new ideas.
- For laboratories and research facilities to store chemicals used in experiments.
- To provide safety during trial runs by ensuring spill prevention and regulatory compliance.
Unmatched Versatility
Whether it’s safeguarding hazardous chemicals, supporting industrial processes, or solving storage challenges in niche applications, Gemini Double Wall Tanks are a trustworthy solution. Their adaptability for use across industries makes them a top choice for liquid containment needs.
Why Choose the National Tank Outlet?
When it comes to sourcing premium storage solutions in today’s market, the National Tank Outlet stands out as a reliable and client focused supplier, trusted by some of the largest companies in America. Here’s why we are the preferred choice for businesses and industries:
1. Trusted Expertise and Nationwide Reach
With years of experience in the storage solution industry, the National Tank Outlet has built a reputation as a trusted supplier. We not only offer competitive pricing but also provide convenient nationwide shipping, making it easy for clients to access top quality tanks no matter where their operations are based.
2. Superior Customer Service
Choosing the right tank can be a complex process, but the National Tank Outlet simplifies it with our dedicated customer service team and unique “Find Your Tank” search tool. From helping with product selection to addressing technical requirements, our knowledgeable professionals are here to provide tailored support to assist every client in finding the ideal solution for their needs.
3. Expert Knowledge for Tailored Solutions
National Tank Outlet’s deep understanding of storage solutions allows us to guide clients toward the most practical and cost effective choices. We don’t just sell tanks; we provide solutions designed to optimize operations, meet regulations, and ensure long lasting performance with value. Our National Tank Outlet blog has become established as a trustworthy source for expert knowledge on many topics related to our products and their uses.
4. A Commitment to Quality
Our long standing collaboration with North America’s leading manufacturers like Peabody Manufacturing is a testament to our commitment to provide products only of the highest quality. This partnership ensures that the National Tank Outlet is consistently positioned to provide innovative and reliable storage solutions, such as the Gemini Double Wall Tank, that clients can trust.
The Clear Advantage
By combining extensive experience, outstanding customer care, and top tier products, the National Tank Outlet offers unmatched value in the storage tank market. Partnering with us means working with a supplier dedicated to helping you achieve safe, effective, and cost efficient liquid containment.
Takeaway
Discover the Gemini Double Wall Tank Difference
Ready to take advantage of the unmatched safety, durability, and versatility offered by the Gemini Double Wall Tank? Explore our full range of options available at the National Tank Outlet here. With a variety of styles, sizes, and features, there’s a tank available to meet your exact needs, whether it’s for chemical storage, agricultural use, or industrial applications.

Expert Guidance Tailored to Your Needs
At the National Tank Outlet, our sales representatives are here to make your purchasing experience straightforward and successful. Reach out to our team for personalized recommendations and assistance with any technical requirements. Whether you need guidance on customizations or help selecting the right tank for your business, our experts are ready to assist.
Full Shopping at Your Fingertips
To make your search easy, we provide links to specific category pages where you can find detailed specifications and quickly compare options. Browse at your convenience and take the next step toward securing your ideal storage solution.

Gemini Double Wall Tanks