Safe. Durable. Feature-Rich Secondary Containment Solutions.
Designed for compliance and peace of mind — engineered for strength, reliability, and long life in industrial environments.
What Makes Gemini Tanks Exceptional
Dual Containment Integrity
Primary and secondary tank for enhanced environmental protection
Robust Construction
Rotationally molded for strength and uniform wall thickness
Custom Configurations
Multiple sizes, fittings, and options available
Code & Compliance Ready
Built to industry standards for safe chemical storage
Why Choose Gemini?
| Feature | Tangible Benefit | Who It Helps |
|---|---|---|
| Dual Containment | Reduces risk of leaks & environmental fines | Safety Managers |
| Modular Sizes | Fits a wide variety of spaces & applications | Engineers & Designers |
| Custom Options | Tailored to job specific requirements | Project Specifiers |
Engineered for These Environments
Industrial Manufacturing
Robust Construction
Chemical Process Facilities
Power & Utilities
Aerospace & Defense
See Gemini in Action
Gemini Dual Containment® Tanks,(also known as double wall tanks), are suited for industries and processes requiring built-in spill prevention and high chemical resistance.
Common Applications
- Water & wastewater chemical feed systems
- Industrial chemical storage and day tanks
- Corrosive chemical storage where floor basins are not practical
- Sodium hypochlorite storage
- Process chemical batching and mixing
- Indoor mechanical rooms and outdoor chemical storage areas
If you are unsure which model or material you need, Peabody’s team can help you review compatibility and system requirements.
Key Design Features & Technical Highlights
Dual Containment Design
What Is a Gemini Dual Containment Tank?
Gemini Dual Containment® Tanks (often referred to as dual containment tanks, double wall tanks, or Gemini tanks) feature a unique tank-in-a-tank design that provides complete secondary containment in one compact system.
Key attributes include:
- Inner “primary” tank for storage and processing
- Outer “secondary” containment tank to capture leaks or failures
- Common top structure for easy connections and consistent installations
- Indoor/outdoor rated and unaffected by UV exposure
Designed for chemical storage and feed applications where spill prevention is essential
Material & Chemical Compatibility
Gemini tanks are offered in multiple material options to support a wide range of chemicals:
Material Options
- Linear Polyethylene (LPE) – Standard material with broad chemical resistance
- Crosslink Polyethylene (XLPE) – Upgraded material for aggressive chemicals
- PPL (Polypropylene) – Optional material for specific corrosive media
- PVDF – Specialty option for highly aggressive or high-purity applications
NSF/ANSI/CAN 61 Options
Many Gemini tanks built from LPE (and select XLPE models) are available with NSF/ANSI/CAN 61 certification for potable water and drinking-water system components.
Fittings & Access Options
We offer a variety of fittings and access options dependent on your tank application. Gemini Dual Containment® Tanks are customizable to your specific needs. Click here to view the options available.
Benefits of Gemini Dual Containment® Tanks
Gemini tanks are engineered systems—not just containers—offering features that streamline installation, operation, and long-term maintenance.
Standard Advantages
- Built-in secondary containment reduces risk and supports regulatory compliance
- Integrally molded pump mounting platform for clean, secure pump placement
- Overflow dikes help manage overfill spray and splash
- Vented lid improves vapor management and access
- Standard threaded fittings on the dome for repeatable, predictable installation
- Molded-in drain on many models for simplified service
- Wide accessory library: suction tubes, level indicators, leak detection options
Regulatory Confidence
Gemini Dual Containment® Tanks meet or exceed EPA requirements for secondary containment in many applications, giving operators a turnkey solution for chemical storage in regulated environments.
How to Specify a Gemini Dual Containment® Tank
How to Specify a Gemini Dual Containment® Tank
1. Choose Your Configuration
Cylindrical, Square, or Gemini PLUS.
2. Determine Required Capacity
5 gallons up to 5,000 gallons.
3. Match Materials to Your Chemical
LPE → XLPE → PPL → PVDF depending on chemical aggressiveness.
4. Select Accessories
- Suction tubes
- Level indicators
- Leak detection devices
- Pump mounts
- Additional fittings
5. Request Pricing
Click here to use the quote tool or request a distributor connection.
Engineered & Built with Precision
Gemini Tank Manufacturing Overview
See how our tanks are crafted with quality and consistency.
Craftsmanship and Quality Control
Gemini Dual Containment® Tanks are designed to meet or exceed EPA secondary containment requirements for many applications. Local regulations should always be confirmed.
Gemini Dual Containment® Tank Systems
Gemini Dual Containment® Tanks Cylindricals
Tank Sizes: 15 gallons – 1500 gallons
Materials: LPE SD 1.5 | LPE HD 1.9 | XLPE | PPL | PVDF
Gemini Dual Containment® Tanks Cylindricals
Gemini Dual Containment® Tanks Square
Tank Sizes: 5 gallons – 540 gallons
Materials: LPE SD 1.5 | LPE HD 1.9 | XLPE | PPL | PVDF
Gemini Dual Containment® Tanks Squares
Gemini PLUS
Tank Sizes: 1300 gallons
Materials: Available ASTM D-1998 rated and is available in LPE, HDPE, XLPE, PPL or PVDF construction.
