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Dilvac Dewar Flask SS/333 - 4.5 litres


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High quality, steel 4.5 litre dewar. Large cryogenic container - secure and strong.

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About SS/333 Dilvac Dewar Flask

Dilvac Dewar SS/333

Fitted in highest-quality Stainless Steel containers, therefore rust-free, anti-corrosive, all hygienic and strong. These Dewars have a Stainless Steel lid with self-contained insulation. Toggle-clamps secure the lid to the body for safe and water-tight transportation.

*Please note all our Dilvac Dewar flasks come fully ready for use. If you should damage your interior glass of your Dewar flask we can offer replacements at competitive prices, see dewar flask replacement.

Dilvac Dewar SS/333 Dimensions

Diameter mm: 182
Height mm: 350
Capacity: 4.5 litres

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Dilvac Dewar Flask SS/333 - 4.5 litres

Dilvac Dewar Flask SS/333 - 4.5 litres

High quality, steel 4.5 litre dewar. Large cryogenic container - secure and strong.

Supplying cryogenic equipment across the UK


RM Supply provides you with a large selection of cryogenic equipment, so that you can choose the right product for the correct purpose. We stock a wide range of leading cryogenic equipment and products, including:


Divlac Dewar Flasks

Dry Ice Makers 


What is cryogenic equipment used for?


Cryogenic equipment is used when you need to operate at extremely low temperatures – the acceptable division between simple refrigeration and cryogenics is -180 degrees Celsius. Typical equipment used in cryogenic applications includes containers, pressure vessels, cold traps, purifiers and piping.


Among the most commonly used cryogenic equipment is a specialised container known as a Dewar flask. (insert link to Divlac Dewar Flask page) Named after its inventor, Scot ‘Sir James Dewar’. This famous piece of cryogenic equipment comprises of a holding chamber within near vacuum, and the Dewar flask prevents the transmission of heat from its contents through the processes of conduction and convection. Dewar flasks also reduce the transmission of heat through the process of radiation, by using selected reflective coatings for various surfaces within the flask. In cryogenic applications, Dewar flasks are typically used as holding tanks for the selected cryogenic liquid.


How does cryogenic equipment work?


Proper insulation is often key to the effectiveness of cryogenic components, as it ensures that temperature levels are maintained within the equipment. Similarly, insulation protects cryogenic equipment users from dangerous temperatures and materials during handling. Of the liquids regularly used in cryogenic operations, nitrogen and helium are the most common; liquid helium in particular allows for extremely low temperatures. Also important to most cryogenic equipment, especially valves, gages and piping systems, is the pressure rating of the unit; the majority of cryogenic systems have specific pressure requirements in order to retain fixed temperatures.


Take a look at the range of cryogenic equipment we supply, or contact us if you have any questions or are unsure which product is best for you.