Reliable liquid helium dewar solutions for ultra-low temperature storage, transfer, and transportation. Our vacuum-insulated helium dewars are designed for laboratories, MRI facilities, universities, semiconductor plants, aerospace projects, and industrial gas applications where minimizing helium loss and maintaining cryogenic performance are critical.
BluNet supply standard and custom liquid helium storage dewars with durable construction, low evaporation rates, and export-ready quality standards.
What Is a Liquid Helium Dewar?
A liquid helium dewar is a specialized cryogenic vessel designed to store helium in liquid form at approximately 4.2 Kelvin (-268.9°C / -452°F). Because helium is one of the coldest and lightest cryogenic liquids, it requires advanced vacuum insulation and precision pressure management.
- MRI magnet cooling systems
- NMR spectroscopy equipment
- Superconducting magnets
- Quantum computing research
- Low-temperature physics laboratories
- Semiconductor manufacturing
- Aerospace cryogenic testing
- Helium transfer and storage operations
Why Liquid Helium Requires a Special Dewar
- Much lower boiling point
- Faster evaporation risk
- Higher value specialty gas
- Greater sensitivity to heat leakage
- More demanding storage requirements
That is why a dedicated helium dewar tank with high vacuum insulation is essential for safe and cost-efficient operation.
Key Features
Advanced Vacuum Insulation
Multi-layer super insulation reduces thermal transfer and lowers boil-off losses.
Low Evaporation Rate
Designed to preserve expensive liquid helium during storage and transport.
Durable Cryogenic Construction
High-grade stainless steel or aluminum structures for long service life.
Safety Pressure Relief
Integrated valves and vent systems for controlled pressure release.
Easy Filling & Dispensing
Compatible with helium transfer hoses and cryogenic filling systems.
Multiple Sizes Available
From portable laboratory dewars to large-capacity industrial containers.
Liquid Helium Dewar Technical Specifications (Model 100–500)
| Specification | 100 | 250 | 350 | 400 | 500 |
|---|---|---|---|---|---|
| Geometric Volume (L) | 110 | 275 | 375 | 440 | 550 |
| Effective Volume (L) | 100 | 250 | 350 | 400 | 500 |
| Static Evaporation Rate (%/day) | 1.0 | 1.0 | 0.8 | 0.9 | 0.7 |
| Working Pressure (psig) | 10 | 10 | 10 | 10 | 10 |
| Diameter (mm) | 610 | 856 | 856 | 1108 | 1108 |
| Overall Height (mm) | ~1550 | ~1712 | ~1932 | ~1674 | ~1758 |
| Empty Weight (kg) | ~112 | ~160 | ~182 | ~225 | ~250 |
| Inner Vessel Depth from Flange (mm) | 1132 | 1310 | 1530 | 1323 | 1407 |
| Main Relief Valve (psig) | 10 | 10 | 10 | 10 | 10 |
| Secondary Relief Valve (psig) | 12 | 12 | 12 | 12 | 12 |
| Caster Size | 3″ | 4″ | 4″ | 5″ | 5″ |
Certifications
Our dewar CO₂ tanks meet the highest international standards for quality and safety.
Each tank is TÜV, TPED, CE, and DOT certified,
ensuring reliable performance for industrial and commercial applications.
Applications of Liquid Helium Dewars
MRI & Medical Imaging
Used to cool superconducting magnets in MRI scanners.
Scientific Research
Essential for cryogenics, superconductivity, and low-temperature experiments.
Semiconductor Industry
Supports advanced cooling processes and precision manufacturing.
Aerospace & Defense
Used in testing environments requiring ultra-low temperatures.
Quantum Technology
Supports emerging quantum computing and ultra-sensitive instrumentation.
Custom Liquid Helium Dewar Options
- Custom volume capacity
- Wide neck or narrow neck opening
- Portable trolley design
- Self-pressurizing system
- Transfer line connection type
- OEM branding
- Export certification support
Why Choose Us as Your Liquid Helium Dewar Supplier
- Professional cryogenic vessel manufacturer
- Stable quality control system
- Competitive factory pricing
- OEM / ODM support
- International shipping experience
- Fast quotation response
- Technical assistance before and after sales
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