Heavy-Duty 410L Cryo Dewar Flask

| Product Overview

The 410L Dewar Flask (Model: DPL-410) is a heavy-duty welded insulated gas cylinder designed for large-scale storage and transportation of cryogenic liquids such as liquid oxygen, liquid nitrogen, liquid argon, liquid carbon dioxide, and liquefied natural gas. Featuring a double-layer vacuum stainless steel construction, the flask combines a rugged outer casing with a 25-layer multi-insulated layer and high-vacuum sandwich layer, creating a top-tier thermal insulation system that minimizes heat transfer. With a geometric volume of 410L and an effective volume of 389L, it offers three work pressure variants (1.4 Mpa, 2.01 Mpa, 2.88 Mpa) to accommodate high-demand industrial scenarios. Measuring 850×750×1770 mm, this cryogenic insulated cylinder ensures continuous gas supply, making it ideal for large-scale manufacturing, commercial food processing, and high-volume scientific research.

| Core Advantages

High-Capacity & Efficient Gas Supply

With a 410L geometric volume, the flask meets large-scale storage needs, reducing the frequency of refills for high-consumption applications. When paired with external vaporizers or parallel connections to main pipelines, it delivers sufficient gas flow to support continuous industrial operations, avoiding supply shortages.

Exceptional Thermal Insulation & Stability

The integration of high-vacuum technology and multi-layer insulation materials achieves ultra-low evaporation rates, preserving cryogenic liquids for extended periods. This stability ensures consistent performance even in fluctuating ambient temperatures, critical for processes requiring precise temperature control.

Industrial-Grade Safety & Reliability

Built with a reinforced outer casing and comprehensive safety components (safety relief valves, pressure gauges, rupture disks), the 410L Dewar Flask adheres to strict industrial safety standards. Its leak-proof welding and pressure-resistant design prevent accidents during transport and storage, while the corrosion-resistant stainless steel construction ensures durability in chemical and manufacturing environments.

Versatile & Low-Maintenance

Compatible with multiple cryogenic liquids (LN2, LO2, LAr, LNG, CO2), the flask serves diverse industries from healthcare to aerospace. Its user-friendly design includes ergonomic handles and wheeled bases for easy mobility, while the passive operation (no power needed) and robust structure require minimal maintenance, saving time and resources for businesses.

| Application Fields

Industrial Manufacturing

Metalworking & Welding: Supplies large volumes of liquid oxygen and argon for heavy-duty metal cutting, welding, and shielding; supports laser cutting with liquid nitrogen assist gas.

Chemical & Energy Industries: Used for inert gas purging in chemical processes, LNG storage and transport, and preventing oxidation in refining operations.

Material Processing: Enables large-scale cryogenic grinding of tough materials (rubber, plastics) and shrink-fit assembly of industrial components.

Healthcare & Biotechnology

Large-Scale Sample Preservation: Ideal for gene banks and reproductive medicine facilities to cryopreserve bulk sperm, eggs, and embryos.

Medical Equipment Support: Provides continuous cooling for high-capacity MRI scanners and other medical devices; facilitates transport of transplant organs and tissues.

Food & Beverage Industry

Commercial Freezing: Powers flash freezing lines for processed foods, maintaining freshness and extending shelf life; suitable for large-scale refrigerated transport.

Beverage & Gastronomy: Used in restaurants, bars, and food production facilities for beverage chilling, ice cream making, and molecular gastronomy applications.

| Operation & Safety Guidelines

Operational Precautions

Always wear full protective gear (antifreeze gloves, goggles, protective clothing) when handling the flask to prevent frostbite from cryogenic liquids or cold metal surfaces.

Ensure adequate ventilation in the operating area; evaporated nitrogen can displace oxygen, leading to hypoxia in closed spaces—install oxygen monitors for added safety.

Avoid overfilling the flask; adhere to the maximum filling capacities (e.g., 408 kg for oxygen, 290 kg for nitrogen) to prevent pressure buildup.

Transport & Maintenance Rules

Short-Distance Movement: Use a heavy-duty trolley with secure straps to keep the flask upright; never tilt, roll, or drop the cylinder.

Long-Distance Transport: Secure the flask in a dedicated transport vehicle with shock-absorbing padding; avoid mixing with corrosive substances.

Routine Maintenance: Clean the outer wall and exhaust pores regularly; inspect pressure gauges and safety valves monthly; store in a dry, non-corrosive environment to extend service life.

| Production Process

The 410L Dewar Flask is manufactured through a rigorous process adhering to international quality standards. Key steps include: precision fabrication of stainless steel inner and outer tanks, automated welding with leak-proof testing, application of 25-layer multi-insulation materials, high-vacuum evacuation of the sandwich layer, and hydraulic pressure testing (up to 46 Mpa). Each unit undergoes thermal insulation performance testing, pressure cycle testing, and safety device calibration to ensure compliance. The production line integrates advanced quality control systems, guaranteeing that every flask meets industrial-grade reliability and safety requirements.

| FAQ

What should I do if the flask’s outer wall has large-area frosting?

Large-area thick frosting indicates vacuum failure, which impairs insulation performance. Stop using the flask immediately, isolate it from heat sources, and contact the supplier for professional inspection and repair.

Can the 410L Dewar Flask be used for liquefied natural gas (LNG) storage?

Yes, the DPL-410 model supports LNG storage with a maximum filling capacity of 170 kg; ensure compatibility with the specified work pressure (1.4 Mpa) for LNG applications.

How often should the flask undergo maintenance?

Conduct daily visual inspections (frosting, leaks), monthly checks of safety devices (pressure gauges, valves), and annual professional maintenance (vacuum testing, seal inspection) to ensure optimal performance.

| Call to Action

Upgrade your cryogenic storage capacity with the 410L Dewar Flask—built for industrial strength, efficiency, and safety. With 1,000 units in stock, we offer factory-direct pricing and fast shipping to meet your urgent needs. Whether for manufacturing, healthcare, or food processing, this high-capacity cryogenic vessel delivers unmatched value. Click "Inquire" to discuss custom specifications or add to basket to secure your order today. Our expert team is ready to provide technical support and after-sales service—invest in a reliable solution that grows with your business!