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Dewar Tank

Your Professional Dewar Tank Supplier

Newtek is a high-tech company specializing in the design and manufacture of gas systems for oxygen, nitrogen, argon, acetylene, nitrous oxide, and carbon dioxide power generation devices or cylinder filling generators. Our product line is highly adaptable and continuously expanding to meet customer demands.

Extensive Experience

As one of the world's leading manufacturers with extensive expertise in on-site gas generators and plant systems, Newtek has successfully installed approximately 350 generators/plants ly.

 

Advanced Equipment

We possess state-of-the-art production equipment and cutting-edge technology, enabling us to independently manufacture various equipment and components required for oxygen plants, nitrogen plants, and carbon dioxide plants.

On-Site Installation and Commissioning

Following the completion of equipment manufacturing, our professional installation team will oversee the on-site installation and commissioning processes. We strictly adhere to standardized installation procedures and safety protocols to ensure the reliable operation and safety of the equipment.

Customized Services

Newtek offers a comprehensive range of customized services tailored to the specific needs of oxygen plants, nitrogen plants, and carbon dioxide plants.

 

 

 

 

 
 
Parameter

 

Volume

175L/195L/210L/410L/500L

Weight

380Kg

Inner Material

Stainless Steel 304/316L

Outer Material

Stainless steel

Type

Horizontal

Working pressure

0.8MPA/1.6MPA/2.16MPA/3.5MPA

MOQ

1 Set

 

Advantages of Dewar Tank

 

 

1. Low storage pressure, multi-level safety protection devices are set, better safety, and simple and reliable operation.

2. Large storage capacity, the gas storage capacity of a hexagonal gas cylinder is equivalent to nearly 30 cylinders of cylinder gas (oxygen, nitrogen, argon). Therefore, it can reduce the storage space, reduce the bottle replacement operation, and improve work efficiency. For pipeline centralized gas supply, it can also reduce the investment in busbars.

3. The bottle body is clean and the supply gas purity is higher. Because it is a direct vaporization supply of liquid gas, it avoids the quality risks caused by secondary pollution in the process of filling, transportation and use of cylinder gas due to more links. Usually the output oxygen purity is ≥99.2%, nitrogen purity is ≥99.999%, argon purity is ≥99.995%, and carbon dioxide purity is ≥99.9%.

4. High gas utilization rate: After each use of cylinder gas, residual pressure must be left, while the hexagonal gas cylinder liquid gas supply can avoid any waste and reduce gas costs.

5. It has automatic boost control, line saving, built-in vaporizer, pressure and liquid level indicator, and high integration.

6. Use advanced technology to improve the production environment and enhance the corporate image.

7. It does not require any kinetic energy, is not affected by power outages and water outages, and can work all day long.

 

Applications of Dewar Tank

 
 
01
 

Medical and Healthcare Industry

Liquid nitrogen is essential for cryopreservation, which involves storing biological materials like stem cells, blood, sperm, and eggs. Nitrogen dewars ensure these materials remain at the required cryogenic temperatures to preserve their viability.

 
02
 

Scientific Research

In laboratories, liquid nitrogen dewars are used for experiments that require extremely low temperatures, such as molecular biology studies, material testing, and chemical analysis.

 
03
 

Food and Beverage Industry

Liquid nitrogen plays a critical role in food freezing and preservation. Using nitrogen dewars ensures the liquid nitrogen is safely transported and stored for rapid food freezing, which maintains food quality and texture.

 
04
 

Industrial Applications

From metal hardening to shrink-fitting machinery parts, liquid nitrogen’s properties make it invaluable in various industrial processes. Nitrogen dewars facilitate the safe handling and efficient storage of this gas.

二氧化碳杜瓦瓶

 

Liquid Nitrogen Storage Dewar

 

Common Gases to Store at a Dewar Tank

The cryogenic dewars are characterized by their great adaptability. There are many different form on the market and each one has special specifications for the type of gas it stores. Some of the most common are:
● Cryogenic argon
● Liquid hydrogen
● Liquid helium
● Liquid nitrogen
● Liquid oxygen
● Liquid carbon dioxide

 

Safety Precautions for Using Dewar Tank

 

● High pressures can be generated inside sealed dewars, generating a potential risk of explosion. In order to avoid this, some dewars allow the gas to escape through an open top, while others require pressure-relief valves.
● If a cryogenic dewar is left open for too long, it can generate condensation or freezing, potentially translating into contaminants, pressure build ups or risk or explosion.
● A gas escape might also mean asphyxiation hazard if the place is not properly ventilated. This is why containers must always be stored in a well-ventilated area.
● Information and caution labels must be installed in order to inform users of potential hazards.
● Technicians must wear the recommended PPE at all times when handling and filling the container, in order to minimize risks.
● Valve connections must be installed specifically to meet the needs for this sort of system
● Adaptors are not to be used
● The area should be a non-smoking one
● The installation of O2 monitors is recommended
● Valves must be opened slowly
● When the container must be manipulated or moved, preventive actions must be taken: two people should move it and wheels or specifically-designed dollies should be considered. At the same time, liquid containers shouldn’t be accompanied while transported in an elevator, and the container mustn’t be lifted from the protection ring.

 

Customized Service

 

1. Pre-planning and design stage

After the project is confirmed, our operation team will conduct in-depth demand communication and analysis with the customer to ensure that we fully understand the customer's expectations and business needs. Based on the customer's specific requirements, we will develop a detailed engineering design plan, including factory layout, equipment configuration, process flow, etc., to ensure the optimal factory design.

2. Manufacturing and procurement of production equipment

As a gas generator manufacturer, we have advanced production equipment and technology, and can independently manufacture various equipment and components required for oxygen plants, nitrogen plants and carbon dioxide plants. At the same time, we have also established cooperative relationships with excellent suppliers around the world to ensure the procurement of high-quality equipment and materials.

3. Equipment installation and commissioning

After the equipment is manufactured, our professional installation team will be responsible for the on-site installation and commissioning of the equipment. We strictly follow the installation procedures and safety standards to ensure the correct operation and safety of the equipment. We will do our best to ensure the control of the construction period, so that customers can start production as soon as possible.

 

Packaging and Shipping

 

Packaging

Packed By Carton or Pallet

Shipping

We will help you to choose the best shipping way according to your detail requirements. By sea, by air, or by express, etc.

 

 

Our Factory

No matter what purity, what style of oxygen generator, nitrogen generator, or hydrogen generator, whether you want to build a liquid nitrogen plant, or liquid oxygen plant for your production, based on our more than 66 years of technical experience, we are proficient in air separation, and PSA technology.

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FAQ

 

Q: What is a dewar tank?

A: A dewar tank is a specialized container used for storing and transporting cryogenic liquids, such as liquid nitrogen, liquid oxygen, and liquid helium. It is designed to minimize heat transfer into the tank to keep the cryogenic liquid in a low - temperature state.

Q: How does a dewar tank maintain the low temperature of the cryogenic liquid?

A: The vacuum - insulated space between the inner and outer vessels reduces heat transfer by conduction and convection. Additionally, the inner vessel is often coated with reflective materials to minimize heat transfer by radiation. These combined features help to keep the cryogenic liquid at a very low temperature for an extended period.

Q: How does the design of a dewar tank prevent the build - up of pressure?

A: Dewar tanks are equipped with pressure - relief valves. These valves are set to open at a specific pressure threshold. When the pressure inside the tank exceeds this limit, usually due to the evaporation of the cryogenic liquid or heat ingress, the valve opens and allows the vapor to escape, thereby preventing the pressure from building up dangerously.

Q: What are the typical sizes of dewar tanks?

A: Dewar tanks come in a variety of sizes. Small portable dewars may have a capacity of a few liters, while larger stationary or transportable tanks can range from tens to thousands of liters. For example, a common laboratory - scale dewar might have a capacity of 10 - 50 liters, while a large industrial - scale dewar for liquid oxygen storage could have a capacity of several thousand liters.

Q: What materials are used to make the inner and outer vessels of a dewar tank?

A: The inner vessel is typically made of stainless steel because it has good resistance to low temperatures and is non - reactive with most cryogenic liquids. The outer vessel is often made of a more durable material like carbon steel or sometimes stainless steel as well, depending on the application and requirements. The materials are chosen for their strength, ability to withstand thermal stresses, and corrosion resistance.

Q: How is the vacuum - insulated space created and maintained in a dewar tank?

A: To create the vacuum - insulated space, the space between the inner and outer vessels is evacuated using vacuum pumps. Once the desired vacuum level is achieved, the opening is sealed. To maintain the vacuum, the seals and the integrity of the tank structure must be maintained. Regular inspections are carried out to check for any leaks that could compromise the vacuum. Specialized vacuum - tight fittings and gaskets are used to ensure that the vacuum is maintained over time.

As one of the most professional dewar tank manufacturers and suppliers in China, we warmly welcome you to wholesale high purity dewar tank from our factory. All custom made products are with high quality and competitive price.

Dewar Tank, Liquid Nitrogen Storage Dewar, Co2 Dewar Tank