Non-Pressurized
Dewar Tanks

What is a Dewar Tank?

Dewar vessels are specialized types of vacuum flasks designed for the transportation and storage of liquid nitrogen, argon, and oxygen. Dewars are also known as 'cryogenic Dewar flasks' or 'liquid nitrogen flasks.' Their construction and thermal insulation ensure the temperature inside is low enough to prevent excessive loss of cryogenic liquids, including liquid nitrogen.

Liquid nitrogen Dewars offer highly efficient storage of cryogenic liquids combined with low weight and modest space requirements. They would be suitable for use in spa and beauty centers, healthcare facilities, and research labs.

Cryomed offers liquid nitrogen Dewar flasks with a 10-, 35- and 50-liter capacity.

Features of Dewar Tanks

Features of Dewar Tanks
  • Low evaporation rate
    Low evaporation rate
  • Low empty weight
    Low empty weight
  • Advanced vacuum and insulation technologies
    Advanced vacuum and insulation technologies
  • Storage capacity from 10 liters to 50 liters
    Storage capacity from 10 liters to 50 liters
  • Assigned service life — 8 years under proper conditions
    Assigned service life — 8 years under proper conditions

Technical Characteristics
of Dewar Tanks

Capacity
(L)
10 35 50
Neck diameter
(mm)
50 50 50
Tank diameter
(mm)
305 455 495
Overall height
(mm)
530 720 855
Emply weight
(kg)
5.4 17 19.5
Weight full
(kg nitrogen)
13.4 45 59.5
Daily loss in %,
nitrogen
0.088 0.09 0.2

Make sure to follow handling instructions in the operation manuals for your cryogenic
equipment to avoid damaging cryogenic tanks.

Non-Pressurized Dewar Tanks

Cryogenic Storage In Cryotherapy

Dewar tanks in cryotherapy are used primarily to supply nitrogen into cryogenic equipment during its operation. Another their function is transporting and storing liquid nitrogen with maximum safety and efficiency.

Dewar tanks we offer are compatible with Cryomed’s whole-body and local cryogenic equipment:

  • 35-liter Dewar tanks come in set with the Dewar type cryosaunas and local cryogenic machines;
  • 50-liter tanks are available optionally for cryosaunas and CRYOFAN CF-04;
  • 10-liter Dewars are optional for CRYOFAN CF-04.

Feel free to contact our sales department for the pricing on Dewar tanks.

Non-pressurized Tanks FAQ

A cryogenic tank is a tank that is used to store liquids at very low temperatures, usually liquefied gasses (oxygen, argon, nitrogen, hydrogen, and helium) at -150°C or lower. They are also used for storing gasses at higher temperatures, such as liquefied natural gas.

Read full answer

They are not interchangeable, you cannot have one replaced with the other, and therefore, it is important from the very beginning to choose the one which will be more suitable for your needs.

Read full answer

Dewar tank is an ideal option for spa and beauty centers, healthcare facilities, and research labs because of its smaller dimensions and volumes, as well as low weight compared to big pressurized tanks. Most of the Dewar tanks are portable and lightweight, making it convenient to handle. For example, a tank with a capacity of 10 liters has an overall height of 53 cm, a diameter of 30.5 cm, and a weight of 13.4 kg when it's full.

Cryomed offers liquid nitrogen Dewar flasks with a 10-, 35- and 50-liter capacity. You can find all the dimensions and technical characteristics of the available tanks in the table.

Dewar tanks are rather portable and lightweight compared to pressurized tanks, they also don’t require much space. That’s why small cryo businesses like to use them.

The 10 liter Dewar tank has an overall height of 53 cm, a diameter of 30.5 cm, and a weight of 13.4 kg when it's full (empty weight is 5.4 Kg).

The 35 liter Dewar tank has an overall height of 72 cm, a diameter of 45.5 cm, and a weight of 45 kg when it's full (empty weight is 17 Kg).

The 50 liter Dewar tank has an overall height of 85.5 cm, a diameter of 49.5 cm, and a weight of 59.5 kg when it's full (empty weight is 19.5 Kg).

A dewar tank is a vessel with a vacuum space between a cold liquid and the outside walls of the vessel. One common type of dewar container is a thermos that you might use to keep drinks cold. Cryogenic dewars store, dispense or transport cryogenic gasses like liquid nitrogen, liquid oxygen, liquid helium, and liquid hydrogen. Its construction and thermal insulation ensure the temperature inside is low enough to prevent excessive loss of cryogenic liquids.

Other Cryo Equipment

Cryostar-1 (used equipment) with 240L tank
Learn more
Mecotec Cryoair Flex (used cryochamber)
Learn more